| 1 | Year | Month | State | Primary Mode | Etiology | Serotype or Genotype | Etiology Status | Setting | Illnesses | Hospitalizations | Info On Hospitalizations | Deaths | Info On Deaths | Food Vehicle | Food Contaminated Ingredient | IFSAC Category | Water Exposure | Water Type | Animal Type |
|---|
| 2 | 2023 | 1 | Minnesota | Food | Norovirus Genogroup IX | GII.P15 GIX.1 | Confirmed | Restaurant: Sit-down dining | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 3 | 2023 | 1 | Massachusetts | Indeterminate/unknown | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 4 | 2023 | 1 | North Carolina | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 23 | 1 | 23 | 0 | 23 | | | | | | |
| 5 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown;Clostridium difficile | | Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 6 | 2023 | 1 | Wisconsin | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 7 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 8 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 9 | 2023 | 1 | Alabama | Indeterminate/unknown | | | | School/college/university | 7 | 1 | 7 | 0 | 7 | | | | | | |
| 10 | 2023 | 1 | Ohio | Food | Norovirus Genogroup II | GII.P untypeable GII.6 | Suspected | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 11 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | | 0 | | 0 | | | | | | |
| 12 | 2023 | 1 | Minnesota | Water | | | | Hotel/motel | 5 | 0 | 1 | 0 | 1 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool;Pool - Other Swimming Pool | |
| 13 | 2023 | 1 | Massachusetts | Indeterminate/unknown | Campylobacter | | Confirmed | Long-term care/nursing home/assisted living facility | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 14 | 2023 | 1 | Ohio | Indeterminate/unknown | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Restaurant | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 15 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 5 | 28 | 0 | 28 | | | | | | |
| 16 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 17 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 18 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 14 | 0 | 0 | 0 | 0 | | | | | | |
| 19 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 20 | 2023 | 1 | Utah | Food | | | | Restaurant: Sit-down dining | 6 | 0 | 3 | 0 | 3 | | | | | | |
| 21 | 2023 | 1 | Oregon | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 22 | 2023 | 1 | Oregon | Food | Norovirus Genogroup II;Norovirus Genogroup II | unknown;GII.P16 GII.4 Sydney | Suspected;Confirmed | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 23 | 2023 | 1 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 40 | 0 | 40 | 0 | 40 | | | | | | |
| 24 | 2023 | 1 | Oregon | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 25 | 2023 | 1 | Oregon | Person-to-person | Norovirus Genogroup II | GII.P7 GII.6 | Confirmed | Child daycare/preschool | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 26 | 2023 | 1 | Ohio | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 27 | 2023 | 1 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 28 | 2023 | 1 | Virginia | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 29 | 2023 | 1 | Virginia | Person-to-person | Norovirus Genogroup I | GI.P5 GI.5 | Confirmed | School/college/university | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 30 | 2023 | 1 | Ohio | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 47 | 0 | 0 | 0 | 0 | | | | | | |
| 31 | 2023 | 1 | Tennessee | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | | 0 | | 0 | | | | | | |
| 32 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 84 | | 0 | 0 | 84 | | | | | | |
| 33 | 2023 | 1 | Montana | Person-to-person | Norovirus Genogroup II | | Confirmed | Long-term care/nursing home/assisted living facility | 50 | 0 | 50 | 0 | 50 | | | | | | |
| 34 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 29 | 1 | 29 | 0 | 29 | | | | | | |
| 35 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 36 | 0 | 0 | 0 | 0 | | | | | | |
| 36 | 2023 | 1 | Wisconsin | Person-to-person | Clostridium difficile;Norovirus unknown | | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 37 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 38 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown;Clostridium difficile | | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 39 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 4 | | 0 | | 0 | | | | | | |
| 40 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 35 | 2 | 35 | 0 | 35 | | | | | | |
| 41 | 2023 | 1 | Alabama | Indeterminate/unknown | Escherichia coli, Shiga toxin-producing | O157 | Confirmed | Child daycare/preschool | 2 | 1 | 1 | 0 | 1 | | | | | | |
| 42 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 53 | 1 | 53 | 0 | 53 | | | | | | |
| 43 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 15 | | 0 | | | | | | |
| 44 | 2023 | 1 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 45 | 2023 | 1 | Alabama | Person-to-person | Norovirus | | Suspected | Restaurant | 3 | | | | | | | | | | |
| 46 | 2023 | 1 | Ohio | Food | Norovirus Genogroup II | GII.P7 GII.7 | Confirmed | Restaurant: Sit-down dining | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 47 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 5 | 0 | 4 | 0 | 4 | | | | | | |
| 48 | 2023 | 1 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 49 | 2023 | 1 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 50 | 2023 | 1 | Oregon | Person-to-person | | | | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 51 | 2023 | 1 | Oregon | Person-to-person | | | | School/college/university | 92 | 0 | 92 | 0 | 92 | | | | | | |
| 52 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 53 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 54 | 2023 | 1 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 55 | 2023 | 1 | Alabama | Person-to-person | Norovirus Genogroup II;Campylobacter;Clostridium difficile;Norovirus Genogroup II;Norovirus Genogroup II | unknown;GII.P16 GII.4 untypeable;unknown | Confirmed;Suspected;Suspected;Suspected;Suspected | Long-term care/nursing home/assisted living facility | 12 | 1 | 12 | 0 | 12 | | | | | | |
| 56 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 34 | 0 | 0 | 0 | 0 | | | | | | |
| 57 | 2023 | 1 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 58 | 2023 | 1 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 31 | | 0 | | 0 | | | | | | |
| 59 | 2023 | 1 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 60 | 2023 | 1 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 61 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Hospital | 6 | 1 | 6 | 0 | 6 | | | | | | |
| 62 | 2023 | 1 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 55 | 1 | 55 | 0 | 55 | | | | | | |
| 63 | 2023 | 1 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Restaurant | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 64 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 6 | 24 | 0 | 24 | | | | | | |
| 65 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 66 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 67 | 2023 | 1 | Pennsylvania | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 69 | 0 | 69 | 0 | 69 | | | | | | |
| 68 | 2023 | 1 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 62 | 0 | 62 | 0 | 62 | | | | | | |
| 69 | 2023 | 1 | Minnesota | Indeterminate/unknown | Norovirus Genogroup II | | Suspected | Office/indoor workplace | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 70 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 71 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 93 | | 0 | 0 | 93 | | | | | | |
| 72 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 20 | | 0 | | 0 | | | | | | |
| 73 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 54 | 1 | 54 | 0 | 54 | | | | | | |
| 74 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 142 | 0 | 142 | 1 | 142 | | | | | | |
| 75 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | | 0 | | 0 | | | | | | |
| 76 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | | 0 | | 0 | | | | | | |
| 77 | 2023 | 1 | North Carolina | Indeterminate/unknown | Cryptosporidium unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 7 | | 0 | | 0 | | | | | | |
| 78 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 79 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 80 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Shelter/group home/transitional housing | 8 | 0 | 8 | | 0 | | | | | | |
| 81 | 2023 | 1 | Virginia | Person-to-person | | | | School/college/university | 39 | 0 | 39 | 0 | 39 | | | | | | |
| 82 | 2023 | 1 | Virginia | Person-to-person | Clostridium difficile | | Confirmed | Long-term care/nursing home/assisted living facility | 20 | | 0 | | 0 | | | | | | |
| 83 | 2023 | 1 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 50 | | 0 | | 0 | | | | | | |
| 84 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 85 | 0 | 85 | 0 | 85 | | | | | | |
| 85 | 2023 | 1 | Virginia | Food | Clostridium perfringens | | Confirmed | Restaurant: Other | 50 | | 0 | | 0 | Chicken, rice, and vegetable mix | | Multiple | | | |
| 86 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 87 | 2023 | 1 | Virginia | Food | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | | 6 | | 0 | | 0 | | | | | | |
| 88 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 89 | 2023 | 1 | Virginia | Indeterminate/unknown | Norovirus Genogroup II | unknown | Suspected | Restaurant | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 90 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 41 | 2 | 41 | 0 | 41 | | | | | | |
| 91 | 2023 | 1 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Suspected | School/college/university | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 92 | 2023 | 1 | Nebraska | Person-to-person | Norovirus Genogroup II | | Suspected | Child daycare/preschool | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 93 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 94 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 95 | 2023 | 1 | Puerto Rico | Water | Cryptosporidium unknown | | Confirmed | Outdoor Area;School/college/university | 19 | 0 | 0 | 0 | 0 | | | | Recreational water -- treated;Recreational water -- untreated | Other;Pool - Other Swimming Pool | |
| 96 | 2023 | 1 | Minnesota | Food | Norovirus unknown | | Suspected | Restaurant: Buffet | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 97 | 2023 | 1 | Ohio | Person-to-person | | | | Child daycare/preschool | 20 | 0 | 20 | 0 | 0 | | | | | | |
| 98 | 2023 | 1 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 15 | 0 | 15 | | | | | | |
| 99 | 2023 | 1 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 100 | 2023 | 1 | Montana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 78 | 0 | 78 | 0 | 78 | | | | | | |
| 101 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 102 | 2023 | 1 | Ohio | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 103 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 85 | | 0 | 2 | 85 | | | | | | |
| 104 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 0 | 0 | 0 | | | | | | |
| 105 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 106 | 2023 | 1 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 17 | 0 | 15 | 0 | 15 | | | | | | |
| 107 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | | 0 | | 0 | | | | | | |
| 108 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 109 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P12 GII.3 | Confirmed | Long-term care/nursing home/assisted living facility | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 110 | 2023 | 1 | Wisconsin | Indeterminate/unknown | Norovirus unknown | | Suspected | | 18 | 0 | 21 | 0 | 21 | | | | | | |
| 111 | 2023 | 1 | Colorado | Food | Norovirus Genogroup II | unknown | Confirmed | Caterer;Restaurant: Sit-down dining | 48 | 0 | 48 | 0 | 48 | | | | | | |
| 112 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 29 | | 0 | | 0 | | | | | | |
| 113 | 2023 | 1 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 114 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 26 | | 0 | 0 | 26 | | | | | | |
| 115 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 5 | 13 | 0 | 0 | | | | | | |
| 116 | 2023 | 1 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 117 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 118 | 2023 | 1 | Alabama | Person-to-person | | | | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 119 | 2023 | 1 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Office/indoor workplace | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 120 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 1 | 19 | 0 | 19 | | | | | | |
| 121 | 2023 | 1 | Wisconsin | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 10 | 1 | 10 | 0 | 10 | | | | | | |
| 122 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 123 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | Shelter/group home/transitional housing | 7 | 1 | 7 | 0 | 7 | | | | | | |
| 124 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 125 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 126 | 2023 | 1 | Maryland | Food | Campylobacter jejuni | | Confirmed | Restaurant: Sit-down dining | 16 | 1 | 16 | 0 | 16 | chicken | | Chicken | | | |
| 127 | 2023 | 1 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Suspected | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 128 | 2023 | 1 | Virginia | Person-to-person | | | | School/college/university | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 129 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 130 | 2023 | 1 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 131 | 2023 | 1 | Vermont | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 60 | 0 | 60 | 0 | 60 | | | | | | |
| 132 | 2023 | 1 | Virginia | Indeterminate/unknown | | | | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 133 | 2023 | 1 | Virginia | Person-to-person | Sapovirus unknown;Rotavirus | | Confirmed;Suspected | Child daycare/preschool | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 134 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 135 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 52 | 0 | 52 | 0 | 52 | | | | | | |
| 136 | 2023 | 1 | Virginia | Person-to-person | | | | | 105 | 0 | 105 | 0 | 105 | | | | | | |
| 137 | 2023 | 1 | Nebraska | Person-to-person | Norovirus Genogroup II | GII.P12 GII.3 | Confirmed | Long-term care/nursing home/assisted living facility | 35 | 2 | 35 | 0 | 35 | | | | | | |
| 138 | 2023 | 1 | Kansas | Indeterminate/unknown | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 1 | 28 | 0 | 28 | | | | | | |
| 139 | 2023 | 1 | Vermont | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 140 | 2023 | 1 | Alabama | Person-to-person | Norovirus | | Suspected | School/college/university | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 141 | 2023 | 1 | Ohio | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P12 GII.3;GII.P17 GII.17 | Confirmed;Suspected | Hospital | 10 | 7 | 7 | 0 | 10 | | | | | | |
| 142 | 2023 | 1 | Nebraska | Person-to-person | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | Long-term care/nursing home/assisted living facility | 7 | 1 | 7 | 0 | 7 | | | | | | |
| 143 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 48 | 0 | 48 | 0 | 48 | | | | | | |
| 144 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 145 | 2023 | 1 | Alabama | Person-to-person | | | | Child daycare/preschool | 14 | | 0 | | 0 | | | | | | |
| 146 | 2023 | 1 | Wisconsin | Food | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | | 49 | 1 | 46 | 0 | 49 | Beef, tenderloin tips | | Beef | | | |
| 147 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 8 | | 0 | | 0 | | | | | | |
| 148 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 70 | 2 | 70 | 0 | 70 | | | | | | |
| 149 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 0 | 0 | 0 | | | | | | |
| 150 | 2023 | 1 | Michigan | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 1 | 17 | 0 | 17 | | | | | | |
| 151 | 2023 | 1 | Michigan | Water | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | Hotel/motel | 19 | 0 | 19 | 0 | 19 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool;Pool - Other Swimming Pool | |
| 152 | 2023 | 1 | Ohio | Indeterminate/unknown | Norovirus | | Suspected | School/college/university | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 153 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 154 | 2023 | 1 | Florida | Food | Norovirus unknown | | Suspected | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | oysters | oysters, raw | Mollusks | | | |
| 155 | 2023 | 1 | Florida | Food | Clostridium perfringens | | Suspected | Restaurant: Sit-down dining;Caterer | 35 | 0 | 30 | 0 | 30 | Chopped Chicken | | Chicken | | | |
| 156 | 2023 | 1 | Minnesota | Food | Escherichia coli, Enterotoxigenic;Escherichia coli, Enteroaggregative | unknown | Confirmed;Confirmed | Restaurant: Other | 4 | 1 | 4 | 0 | 4 | cold-pressed juice | fennel | N/A | | | |
| 157 | 2023 | 1 | Texas | Indeterminate/unknown | Norovirus unknown | | Confirmed | Hospital | 5 | 5 | 5 | 0 | 5 | | | | | | |
| 158 | 2023 | 1 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 159 | 2023 | 1 | Ohio | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Child daycare/preschool | 26 | 0 | 0 | 0 | 26 | | | | | | |
| 160 | 2023 | 1 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 161 | 2023 | 1 | Wyoming | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 162 | 2023 | 1 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 163 | 2023 | 1 | Texas | Person-to-person | | | | Child daycare/preschool | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 164 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 32 | 0 | 32 | 0 | 32 | | | | | | |
| 165 | 2023 | 1 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 166 | 2023 | 1 | Michigan | Person-to-person | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 167 | 2023 | 1 | Michigan | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 168 | 2023 | 1 | Nebraska | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 21 | | 0 | | 0 | | | | | | |
| 169 | 2023 | 1 | Vermont | Indeterminate/unknown | Norovirus unknown | | Suspected | Office/indoor workplace | 19 | | 0 | | 0 | | | | | | |
| 170 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 78 | 0 | 78 | 0 | 78 | | | | | | |
| 171 | 2023 | 1 | Virginia | Person-to-person | | | | Child daycare/preschool | 54 | 0 | 54 | 0 | 54 | | | | | | |
| 172 | 2023 | 1 | Virginia | Person-to-person | | | | School/college/university | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 173 | 2023 | 1 | Michigan | Food | Norovirus Genogroup II;Norovirus Genogroup II | GII.P17 GII.17;unknown | Suspected;Confirmed | Restaurant: Sit-down dining | 7 | | 0 | | 0 | | | | | | |
| 174 | 2023 | 1 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 175 | 2023 | 1 | Vermont | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 27 | 1 | 27 | 0 | 27 | | | | | | |
| 176 | 2023 | 1 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 42 | 0 | 42 | 0 | 42 | | | | | | |
| 177 | 2023 | 1 | Alabama | Indeterminate/unknown | | | | School/college/university | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 178 | 2023 | 1 | Ohio | Person-to-person | Norovirus | | Suspected | School/college/university | 46 | 0 | 10 | 0 | 9 | | | | | | |
| 179 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 51 | 0 | 51 | 0 | 51 | | | | | | |
| 180 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 181 | 2023 | 1 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 182 | 2023 | 1 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 183 | 2023 | 1 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 184 | 2023 | 1 | Kentucky | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 185 | 2023 | 1 | Ohio | Person-to-person | Shigella flexneri | | Confirmed | Residence - Single-family home | 2 | 2 | 2 | 0 | 2 | | | | | | |
| 186 | 2023 | 1 | Pennsylvania | Food | | | | | 8 | | 0 | | 0 | | | | | | |
| 187 | 2023 | 1 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 1 | 17 | 0 | 17 | | | | | | |
| 188 | 2023 | 1 | Georgia | Water | Chlorine | | Suspected | Subdivision/Neighborhood | 10 | 0 | 10 | 0 | 10 | | | | Recreational water -- treated | Pool - Other Swimming Pool | |
| 189 | 2023 | 1 | Pennsylvania | Indeterminate/unknown | Norovirus unknown | | Suspected | Restaurant | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 190 | 2023 | 1 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 39 | 0 | 39 | 0 | 39 | | | | | | |
| 191 | 2023 | 1 | Texas | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 45 | 1 | 1 | 0 | 0 | | | | | | |
| 192 | 2023 | 1 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 24 | 0 | 19 | 0 | 19 | | | | | | |
| 193 | 2023 | 1 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 194 | 2023 | 1 | Indiana | Person-to-person | Norovirus | | Suspected | Hospital | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 195 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 70 | 2 | 70 | 0 | 70 | | | | | | |
| 196 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 46 | 0 | 46 | 0 | 46 | | | | | | |
| 197 | 2023 | 1 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 20 | 0 | 1 | 0 | 1 | | | | | | |
| 198 | 2023 | 1 | Pennsylvania | Food | | | | School/college/university | 80 | 0 | 23 | 0 | 23 | rice | | Grains-beans | | | |
| 199 | 2023 | 1 | Connecticut | Person-to-person | | | | School/college/university | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 200 | 2023 | 1 | Connecticut | Person-to-person | | | | School/college/university | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 201 | 2023 | 1 | Connecticut | Person-to-person | | | | School/college/university | 24 | 0 | 12 | 0 | 12 | | | | | | |
| 202 | 2023 | 1 | North Carolina | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 203 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 204 | 2023 | 1 | Colorado | Person-to-person | Norovirus Genogroup II | | Suspected | Child daycare/preschool | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 205 | 2023 | 1 | Colorado | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 206 | 2023 | 1 | Colorado | Indeterminate/unknown | Norovirus unknown | | Suspected | Child daycare/preschool | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 207 | 2023 | 1 | Maryland | Food | Bacillus cereus | | Confirmed | Restaurant: Sit-down dining | 21 | 0 | 21 | 0 | 21 | rice | | Grains-beans | | | |
| 208 | 2023 | 1 | Maryland | Food | Scombroid toxin | | Confirmed | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | tuna | | Fish | | | |
| 209 | 2023 | 1 | New Mexico | Person-to-person | Norovirus | | Confirmed | Long-term care/nursing home/assisted living facility | 29 | 0 | 16 | 0 | 16 | | | | | | |
| 210 | 2023 | 1 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 211 | 2023 | 1 | Pennsylvania | Food | | | | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 212 | 2023 | 1 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 33 | 0 | 0 | 0 | 0 | | | | | | |
| 213 | 2023 | 1 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 214 | 2023 | 1 | Vermont | Person-to-person | Norovirus | | Suspected | School/college/university | 55 | 0 | 55 | 0 | 55 | | | | | | |
| 215 | 2023 | 1 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 216 | 2023 | 1 | New Hampshire | Person-to-person | | | | Hospital | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 217 | 2023 | 1 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 218 | 2023 | 1 | Michigan | Person-to-person | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | Long-term care/nursing home/assisted living facility | 46 | 0 | 46 | 0 | 46 | | | | | | |
| 219 | 2023 | 1 | Indiana | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 220 | 2023 | 1 | Montana | Person-to-person | | | | Child daycare/preschool | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 221 | 2023 | 1 | Rhode Island | Food | Norovirus Genogroup II;Norovirus Genogroup II;Norovirus Genogroup II | unknown;GII.P7 GII.6;unknown | Confirmed;Suspected;Suspected | Restaurant: Sit-down dining | 12 | 0 | 6 | 0 | 11 | | | | | | |
| 222 | 2023 | 1 | Pennsylvania | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 223 | 2023 | 1 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 48 | 0 | 48 | 0 | 48 | | | | | | |
| 224 | 2023 | 1 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 64 | 1 | 64 | 0 | 64 | | | | | | |
| 225 | 2023 | 1 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 226 | 2023 | 1 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 227 | 2023 | 1 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 51 | 0 | 51 | 0 | 51 | | | | | | |
| 228 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 229 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 42 | 0 | 42 | 0 | 42 | | | | | | |
| 230 | 2023 | 1 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Suspected | School/college/university | 61 | 0 | 61 | 0 | 61 | | | | | | |
| 231 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 60 | 0 | 60 | 0 | 60 | | | | | | |
| 232 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 233 | 2023 | 1 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 36 | 1 | 36 | 0 | 36 | | | | | | |
| 234 | 2023 | 1 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 235 | 2023 | 1 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 236 | 2023 | 1 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 237 | 2023 | 1 | Rhode Island | Environmental contamination other than food/water | Norovirus Genogroup II;Norovirus Genogroup II | GII.P7 GII.7;unknown | Suspected;Confirmed | Other | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 238 | 2023 | 1 | Colorado | Food | | | | | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 239 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 240 | 2023 | 1 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 32 | 0 | 23 | 0 | 23 | | | | | | |
| 241 | 2023 | 1 | South Carolina | Water | Legionella pneumophila | serogroup 1 | Confirmed | Unknown | 2 | 2 | 2 | 0 | 2 | | | | Undetermined water | | |
| 242 | 2023 | 1 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 49 | 1 | 37 | 0 | 37 | | | | | | |
| 243 | 2023 | 1 | Vermont | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 244 | 2023 | 1 | Texas | Indeterminate/unknown | Salmonella unknown | | Suspected | Residence - Single-family home | 6 | 1 | 6 | 0 | 6 | | | | | | |
| 245 | 2023 | 1 | Vermont | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 15 | 0 | 16 | | | | | | |
| 246 | 2023 | 1 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 247 | 2023 | 1 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 248 | 2023 | 1 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 249 | 2023 | 1 | Connecticut | Person-to-person | | | | Shelter/group home/transitional housing | 14 | 0 | 13 | 0 | 13 | | | | | | |
| 250 | 2023 | 1 | Pennsylvania | Indeterminate/unknown | Norovirus Genogroup I;Norovirus Genogroup II | | Suspected;Suspected | School/college/university | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 251 | 2023 | 1 | Pennsylvania | Person-to-person | | | | School/college/university | 25 | | 0 | | 0 | | | | | | |
| 252 | 2023 | 1 | Wisconsin | Food | | | | Restaurant: Fast-food (drive up service or pay at counter) | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 253 | 2023 | 1 | Puerto Rico | Indeterminate/unknown | | | | School/college/university | 29 | 0 | 23 | 0 | 23 | | | | | | |
| 254 | 2023 | 1 | Ohio | Person-to-person | Giardia | | Confirmed | Residence - Single-family home | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 255 | 2023 | 1 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 1 | 12 | 0 | 12 | | | | | | |
| 256 | 2023 | 1 | Michigan | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 19 | 0 | 12 | 0 | 12 | | | | | | |
| 257 | 2023 | 1 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 258 | 2023 | 1 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 15 | 0 | 9 | 0 | 9 | | | | | | |
| 259 | 2023 | 1 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 1 | 11 | 0 | 11 | | | | | | |
| 260 | 2023 | 1 | Oregon | Person-to-person | | | | School/college/university | 66 | 0 | 66 | 0 | 66 | | | | | | |
| 261 | 2023 | 1 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 262 | 2023 | 1 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 263 | 2023 | 1 | Virginia | Indeterminate/unknown | Clostridium difficile | | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 264 | 2023 | 1 | Virginia | Animal contact | Cryptosporidium unknown | | Confirmed | Correctional/detention facility;Farm/dairy/agricultural setting | 4 | 1 | 4 | 0 | 4 | | | | | | Cattle |
| 265 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 52 | 0 | 52 | 0 | 52 | | | | | | |
| 266 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 2 | 10 | 0 | 10 | | | | | | |
| 267 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 268 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 269 | 2023 | 1 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 5 | 0 | 0 | 0 | 0 | | | | | | |
| 270 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 271 | 2023 | 1 | Puerto Rico | Food | Salmonella enterica | unknown | Confirmed | | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 272 | 2023 | 1 | Alabama | Water | Legionella pneumophila | serogroup 1 | Confirmed | Correctional/detention facility | 2 | 2 | 2 | 1 | 1 | | | | Drinking water | Community | |
| 273 | 2023 | 1 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 79 | 0 | 79 | 0 | 79 | | | | | | |
| 274 | 2023 | 1 | Nevada | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | School/college/university | 85 | 0 | 85 | 0 | 85 | | | | | | |
| 275 | 2023 | 1 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 63 | 0 | 0 | 0 | 0 | | | | | | |
| 276 | 2023 | 1 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 277 | 2023 | 1 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 21 | 0 | 0 | 0 | 0 | | | | | | |
| 278 | 2023 | 1 | Multistate | Food | Campylobacter jejuni | | Confirmed | Restaurant: Sit-down dining | 11 | 1 | 11 | 0 | 10 | chicken | | Chicken | | | |
| 279 | 2023 | 1 | Nevada | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | School/college/university | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 280 | 2023 | 1 | Puerto Rico | Indeterminate/unknown | | | | School/college/university | 23 | 1 | 23 | 0 | 23 | | | | | | |
| 281 | 2023 | 1 | Mississippi | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 282 | 2023 | 1 | Oregon | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 283 | 2023 | 1 | Pennsylvania | Person-to-person | Shigella flexneri | serotype 2 unspecified | Confirmed | Child daycare/preschool | 17 | | | 0 | 17 | | | | | | |
| 284 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 51 | 0 | 51 | 0 | 51 | | | | | | |
| 285 | 2023 | 1 | Multistate | Food | Salmonella enterica | Hartford | Confirmed | Restaurant: Sit-down dining;Restaurant: Fast-food (drive up service or pay at counter);Residence - Single-family home;Unknown | 54 | 12 | 47 | 0 | 47 | tomatoes | | Seeded Vegetables | | | |
| 286 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 287 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 288 | 2023 | 1 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 30 | 1 | 30 | 0 | 30 | | | | | | |
| 289 | 2023 | 1 | Multistate | Food | Escherichia coli, Shiga toxin-producing | O157:H7 | Confirmed | Unknown | 7 | 3 | 7 | 0 | 7 | | | | | | |
| 290 | 2023 | 1 | Connecticut | Person-to-person | Clostridium difficile | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 0 | 20 | 0 | 20 | | | | | | |
| 291 | 2023 | 1 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 292 | 2023 | 1 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 293 | 2023 | 1 | Nevada | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 34 | | 0 | 0 | 34 | | | | Other/Environmental water | | |
| 294 | 2023 | 1 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 295 | 2023 | 1 | Oregon | Person-to-person | | | | School/college/university | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 296 | 2023 | 1 | Oregon | Person-to-person | | | | Child daycare/preschool | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 297 | 2023 | 1 | Oregon | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 298 | 2023 | 1 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 299 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 300 | 2023 | 1 | West Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 78 | 2 | 78 | 0 | 78 | | | | | | |
| 301 | 2023 | 1 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 48 | 1 | 48 | 0 | 48 | | | | | | |
| 302 | 2023 | 1 | Colorado | Indeterminate/unknown | | | | Restaurant | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 303 | 2023 | 1 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Other | 19 | 0 | 0 | 0 | 0 | | | | | | |
| 304 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Other | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 305 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Other | 24 | 0 | 0 | 0 | 0 | | | | | | |
| 306 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 25 | 0 | 0 | 0 | 0 | | | | | | |
| 307 | 2023 | 1 | Illinois | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 29 | 0 | 28 | 0 | 29 | | | | | | |
| 308 | 2023 | 1 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 5 | 0 | 0 | 0 | 0 | | | | | | |
| 309 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 310 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 2 | 2 | 2 | 0 | 0 | | | | | | |
| 311 | 2023 | 1 | Illinois | Person-to-person | | | | Other | 13 | 0 | 0 | 0 | 0 | | | | | | |
| 312 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 53 | 2 | 2 | 1 | 1 | | | | | | |
| 313 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 314 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Other | 27 | 0 | 0 | 0 | 0 | | | | | | |
| 315 | 2023 | 1 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 0 | 0 | 0 | 0 | | | | | | |
| 316 | 2023 | 1 | Colorado | Person-to-person | | | | Other | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 317 | 2023 | 1 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 24 | 4 | 24 | 0 | 24 | | | | | | |
| 318 | 2023 | 1 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 44 | 0 | 44 | 0 | 44 | | | | | | |
| 319 | 2023 | 1 | Arizona | Food | | | | | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 320 | 2023 | 1 | Colorado | Indeterminate/unknown | Norovirus unknown | | Confirmed | Restaurant | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 321 | 2023 | 1 | Idaho | Animal contact | Salmonella enterica | Infantis | Suspected | Residence - Single-family home | 2 | 0 | 2 | 0 | 2 | | | | | | Cat or kitten |
| 322 | 2023 | 1 | Illinois | Food | Norovirus unknown | | Suspected | Caterer | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 323 | 2023 | 1 | Louisiana | Person-to-person | Escherichia coli, Enteropathogenic | unknown | Suspected | Child daycare/preschool | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 324 | 2023 | 1 | Oregon | Indeterminate/unknown | | | | School/college/university | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 325 | 2023 | 1 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Suspected | School/college/university | 46 | 0 | 0 | 0 | 0 | | | | | | |
| 326 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 26 | 0 | 0 | 0 | 0 | | | | | | |
| 327 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 12 | 0 | 0 | 0 | 0 | | | | | | |
| 328 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 329 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 64 | | 0 | | 0 | | | | | | |
| 330 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 21 | 0 | 0 | 0 | 0 | | | | | | |
| 331 | 2023 | 1 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 53 | 0 | 0 | 0 | 0 | | | | | | |
| 332 | 2023 | 1 | Oregon | Indeterminate/unknown | | | | School/college/university | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 333 | 2023 | 1 | Wisconsin | Water | Legionella unknown;Legionella pneumophila | serogroup 1 | Confirmed;Confirmed | Mobile home/trailer park | 2 | 2 | 2 | 0 | 2 | | | | Drinking water | Community | |
| 334 | 2023 | 1 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | | | | | | | | | |
| 335 | 2023 | 1 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | | | | | | | | | |
| 336 | 2023 | 1 | Georgia | Food | Salmonella enterica | Thompson | Confirmed | Grocery store/bakery/deli/convenience store | 16 | 8 | 16 | 0 | 16 | chicken salad | | Multiple | | | |
| 337 | 2023 | 1 | Iowa | Indeterminate/unknown | | | | Restaurant | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 338 | 2023 | 1 | Florida | Water | Legionella pneumophila | serogroup 1 | Confirmed | Residence - Multi-unit housing | 2 | 2 | 2 | 0 | 2 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 339 | 2023 | 1 | Louisiana | Water | Legionella pneumophila | serogroup 1 | Confirmed | Correctional/detention facility | 3 | 3 | 3 | 1 | 3 | | | | Drinking water | Unknown | |
| 340 | 2023 | 1 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 341 | 2023 | 1 | Florida | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 2 | | 0 | 0 | 2 | | | | Drinking water;Recreational water -- treated | Community;Hot Tub/Spa/Whirlpool | |
| 342 | 2023 | 1 | Idaho | Animal contact | Campylobacter unknown | | Suspected | Residence - Single-family home | 2 | 1 | 2 | 0 | 2 | | | | | | Dog or puppy |
| 343 | 2023 | 1 | Illinois | Person-to-person | Sapovirus | | Confirmed | Other | 15 | 0 | 0 | 0 | 0 | | | | | | |
| 344 | 2023 | 1 | Connecticut | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | School/college/university | 167 | | 0 | | 0 | | | | | | |
| 345 | 2023 | 1 | Kansas | Person-to-person | Norovirus Genogroup I | unknown | Suspected | School/college/university | 156 | | 0 | | 0 | | | | | | |
| 346 | 2023 | 1 | Kansas | Food | Campylobacter jejuni | | Confirmed | | 3 | | 0 | 0 | 3 | | | | | | |
| 347 | 2023 | 1 | Kansas | Person-to-person | Norovirus Genogroup I | unknown | Suspected | Long-term care/nursing home/assisted living facility | 13 | | 0 | | 0 | | | | | | |
| 348 | 2023 | 1 | Kansas | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 36 | 0 | 36 | | 0 | | | | | | |
| 349 | 2023 | 1 | Multistate | Animal contact | Salmonella enterica | Infantis | Confirmed | Residence - Multi-unit housing;Agricultural feed store;Residence - Single-family home | 129 | 15 | 75 | 0 | 80 | | | | | | Poultry |
| 350 | 2023 | 1 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | Hospital | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 351 | 2023 | 1 | Iowa | Indeterminate/unknown | | | | Restaurant | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 352 | 2023 | 1 | Iowa | Person-to-person | Norovirus Genogroup II | | Suspected | Restaurant | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 353 | 2023 | 1 | California | Food | Norovirus unknown | | Suspected | Other | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 354 | 2023 | 1 | California | Food | Norovirus unknown | | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 355 | 2023 | 1 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | Other | 15 | 1 | 15 | 0 | 15 | | | | | | |
| 356 | 2023 | 1 | Multistate | Animal contact | Salmonella enterica | Kiambu | Confirmed | Residence - Single-family home;Residence - Multi-unit housing | 7 | 1 | 5 | 0 | 5 | | | | | | Dog or puppy |
| 357 | 2023 | 1 | Iowa | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II;Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;GII.P16 GII.4 untypeable;unknown;GII.P16 GII.4 Sydney | Confirmed;Suspected;Suspected;Suspected | Restaurant | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 358 | 2023 | 1 | Iowa | Indeterminate/unknown | | | | School/college/university | 61 | 0 | 61 | 0 | 61 | | | | | | |
| 359 | 2023 | 1 | Iowa | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;GII.P16 GII.4 Sydney;unknown | Confirmed;Suspected;Suspected | School/college/university | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 360 | 2023 | 1 | Iowa | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;GII.P16 GII.4 Sydney | Confirmed;Confirmed | Restaurant | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 361 | 2023 | 1 | Iowa | Person-to-person | Norovirus Genogroup I | GI.P13 GI.3 | Confirmed | Long-term care/nursing home/assisted living facility | 44 | 0 | 44 | 0 | 44 | | | | | | |
| 362 | 2023 | 1 | Iowa | Person-to-person | Norovirus Genogroup II | | Suspected | Child daycare/preschool | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 363 | 2023 | 1 | Illinois | Food | Campylobacter jejuni | | Confirmed | Unknown | 2 | 1 | 2 | 0 | 2 | other milk, unpasteurized;cheese, unspecified | | Dairy | | | |
| 364 | 2023 | 1 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 365 | 2023 | 1 | Oregon | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 51 | 1 | 51 | 0 | 51 | | | | | | |
| 366 | 2023 | 1 | Idaho | Indeterminate/unknown | Salmonella enterica | I 4,[5],12:i:- | Suspected | Residence - Single-family home | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 367 | 2023 | 1 | Iowa | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 29 | 4 | 29 | 0 | 29 | | | | | | |
| 368 | 2023 | 1 | Iowa | Food | Salmonella enterica | Hartford | Confirmed | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 369 | 2023 | 1 | Idaho | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;unknown | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 62 | 3 | 62 | 0 | 62 | | | | | | |
| 370 | 2023 | 1 | Idaho | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 371 | 2023 | 1 | Illinois | Food | Norovirus Genogroup II | | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 11 | 0 | 11 | 0 | 0 | | | | | | |
| 372 | 2023 | 1 | Illinois | Food | Norovirus Genogroup II | unknown | Suspected | Restaurant: Sit-down dining | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 373 | 2023 | 1 | Washington | Food | Shigella sonnei | | Confirmed | Restaurant: Sit-down dining | 32 | 0 | 29 | 0 | 29 | | | | | | |
| 374 | 2023 | 1 | Washington | Food | Norovirus | | Suspected | Restaurant: Other | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 375 | 2023 | 1 | Delaware | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 55 | 2 | 55 | 0 | 55 | | | | | | |
| 376 | 2023 | 1 | Utah | Indeterminate/unknown | | | | School/college/university | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 377 | 2023 | 1 | Illinois | Food | Norovirus unknown | | Suspected | | 5 | 0 | 0 | 0 | 0 | | | | | | |
| 378 | 2023 | 1 | Nevada | Person-to-person | | | | Child daycare/preschool | 38 | 0 | 0 | 0 | 0 | | | | | | |
| 379 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 29 | 1 | 29 | 0 | 29 | | | | | | |
| 380 | 2023 | 1 | Colorado | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 381 | 2023 | 1 | Colorado | Person-to-person | Norovirus | | Suspected | School/college/university | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 382 | 2023 | 1 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 383 | 2023 | 1 | Maine | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 384 | 2023 | 1 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 21 | 5 | 21 | 0 | 21 | | | | | | |
| 385 | 2023 | 1 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 22 | | 0 | | 0 | | | | | | |
| 386 | 2023 | 1 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Hospital | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 387 | 2023 | 1 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 42 | 1 | 42 | 0 | 42 | | | | | | |
| 388 | 2023 | 1 | Missouri | Food | Clostridium perfringens;Bacillus cereus | | Suspected;Suspected | Restaurant: Buffet | 15 | 0 | 15 | 0 | 15 | Kettle beef;Mashed Potatoes | | Multiple | | | |
| 389 | 2023 | 1 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 390 | 2023 | 1 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 39 | 2 | 25 | 0 | 25 | | | | | | |
| 391 | 2023 | 1 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 392 | 2023 | 1 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 393 | 2023 | 1 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 29 | 0 | 22 | 0 | 22 | | | | | | |
| 394 | 2023 | 1 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 0 | 21 | 0 | 21 | | | | | | |
| 395 | 2023 | 1 | California | Food | Other - Virus;Other | | Suspected;Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 6 | 0 | 6 | 0 | 6 | ice cream/yogurt | | Multiple | | | |
| 396 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | | 0 | | 0 | | | | | | |
| 397 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 41 | 0 | 41 | 0 | 41 | | | | | | |
| 398 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 70 | 1 | 70 | 1 | 70 | | | | | | |
| 399 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | School/college/university | 25 | 0 | 0 | 0 | 0 | | | | | | |
| 400 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 1 | 23 | 0 | 23 | | | | | | |
| 401 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 402 | 2023 | 2 | Alabama | Person-to-person | Norovirus Genogroup I;Clostridium difficile;Norovirus Genogroup I | GI.1;GI.P13 GI.3 | Confirmed;Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 403 | 2023 | 2 | Alabama | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 404 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown;Norovirus unknown | | Suspected;Suspected | School/college/university | 16 | | 0 | 0 | 16 | | | | | | |
| 405 | 2023 | 2 | Minnesota | Food | Norovirus unknown | | Suspected | Restaurant: Other | 3 | 0 | 3 | 0 | 3 | salad | | Multiple | | | |
| 406 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 407 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 20 | | 0 | 0 | 20 | | | | | | |
| 408 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 32 | 1 | 1 | 0 | 0 | | | | | | |
| 409 | 2023 | 2 | Ohio | Person-to-person | | | | School/college/university | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 410 | 2023 | 2 | Nebraska | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 0 | 0 | 0 | | | | | | |
| 411 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 412 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 46 | 0 | 46 | 0 | 46 | | | | | | |
| 413 | 2023 | 2 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P7 GII.7 | Suspected | Long-term care/nursing home/assisted living facility | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 414 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | | 0 | | 0 | | | | | | |
| 415 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 29 | | 0 | 0 | 29 | | | | | | |
| 416 | 2023 | 2 | Ohio | Person-to-person | Astrovirus;Norovirus Genogroup II | GII.P12 GII.3 | Confirmed;Suspected | School/college/university | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 417 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 53 | 0 | 53 | 0 | 53 | | | | | | |
| 418 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 419 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.4 Sydney;unknown | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 420 | 2023 | 2 | Virginia | Person-to-person | | | | School/college/university | 166 | 0 | 166 | 0 | 166 | | | | | | |
| 421 | 2023 | 2 | Virginia | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 422 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 117 | 0 | 117 | 0 | 117 | | | | | | |
| 423 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II;Astrovirus;Rotavirus | GII.P16 GII.4 Sydney | Confirmed;Suspected;Suspected | Shelter/group home/transitional housing | 34 | 3 | 34 | 0 | 34 | | | | | | |
| 424 | 2023 | 2 | Virginia | Person-to-person | Rotavirus | | Suspected | Child daycare/preschool | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 425 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 426 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 25 | | 0 | 0 | 25 | | | | | | |
| 427 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | | 0 | | 0 | | | | | | |
| 428 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 0 | 0 | 0 | | | | | | |
| 429 | 2023 | 2 | Arkansas | Indeterminate/unknown | Norovirus Genogroup II | | Suspected | Unknown | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 430 | 2023 | 2 | Tennessee | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 1 | 0 | 1 | | | | | | |
| 431 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 34 | 0 | 0 | 0 | 0 | | | | | | |
| 432 | 2023 | 2 | Massachusetts | Indeterminate/unknown | Norovirus unknown | | Confirmed | Hospital | 7 | 7 | 7 | 0 | 7 | | | | | | |
| 433 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 13 | 0 | 0 | 0 | 0 | | | | | | |
| 434 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 27 | 1 | 27 | 0 | 27 | | | | | | |
| 435 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 436 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | | 0 | | | | | | |
| 437 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 438 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 63 | 0 | 63 | 0 | 63 | | | | | | |
| 439 | 2023 | 2 | Ohio | Person-to-person | Norovirus | | Suspected | School/college/university | 54 | 0 | 0 | 0 | 54 | | | | | | |
| 440 | 2023 | 2 | Ohio | Person-to-person | Norovirus | | Suspected | School/college/university | 21 | 0 | 18 | 0 | 21 | | | | | | |
| 441 | 2023 | 2 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 442 | 2023 | 2 | South Carolina | Person-to-person | Norovirus Genogroup II | GII.17 | Confirmed | School/college/university | 10 | 0 | 1 | 0 | 10 | | | | | | |
| 443 | 2023 | 2 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 444 | 2023 | 2 | Ohio | Food | Norovirus Genogroup II | GII.P16 GII.12 | Confirmed | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 445 | 2023 | 2 | Ohio | Food | Norovirus | | Suspected | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 446 | 2023 | 2 | Ohio | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 33 | 1 | 33 | 0 | 33 | | | | | | |
| 447 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 22 | | 0 | | 0 | | | | | | |
| 448 | 2023 | 2 | Alabama | Indeterminate/unknown | Norovirus | | Suspected | Other healthcare facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 449 | 2023 | 2 | Ohio | Food | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 450 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | | | | Unknown | 16 | | 0 | | 0 | | | | | | |
| 451 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 452 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | Hospital | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 453 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 454 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 49 | 0 | 0 | 0 | 0 | | | | | | |
| 455 | 2023 | 2 | Ohio | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 456 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 41 | 0 | 41 | 0 | 41 | | | | | | |
| 457 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 458 | 2023 | 2 | Nebraska | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 3 | 26 | 0 | 26 | | | | | | |
| 459 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown;Norovirus Genogroup II;Norovirus Genogroup II | GII.P12 GII.3;unknown | Confirmed;Suspected;Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 460 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;unknown | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 51 | 1 | 51 | 0 | 51 | | | | | | |
| 461 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 57 | 0 | 57 | 0 | 57 | | | | | | |
| 462 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 463 | 2023 | 2 | Virginia | Food | Norovirus Genogroup II;Norovirus Genogroup II | GII.P17 GII.17;unknown | Confirmed;Confirmed | | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 464 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Office/indoor workplace | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 465 | 2023 | 2 | Nebraska | Person-to-person | Norovirus Genogroup II | GII.P7 GII.7 | Confirmed | Child daycare/preschool | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 466 | 2023 | 2 | Nebraska | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 1 | 1 | 0 | 0 | | | | | | |
| 467 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | Hospital | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 468 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Suspected | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 469 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 44 | 0 | 44 | 0 | 44 | | | | | | |
| 470 | 2023 | 2 | Florida | Food | | | | Other | 3 | 0 | 3 | 0 | 3 | corn tortilla chips | | Multiple | | | |
| 471 | 2023 | 2 | Ohio | Food | Norovirus Genogroup II | GII.P17 GII.17 | Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 472 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 473 | 2023 | 2 | Minnesota | Indeterminate/unknown | Norovirus Genogroup II | GII.P untypeable | Suspected | Restaurant | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 474 | 2023 | 2 | Minnesota | Food | Norovirus unknown | | Suspected | Restaurant: Other | 4 | 0 | 4 | 0 | 4 | Nachos | | Multiple | | | |
| 475 | 2023 | 2 | Minnesota | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 2 | 0 | 2 | | | | | | |
| 476 | 2023 | 2 | Minnesota | Food | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Suspected | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | lettuce | | Vegetable Row Crops | | | |
| 477 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 1 | 0 | 1 | | | | | | |
| 478 | 2023 | 2 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 12 | 0 | 12 | | | | | | |
| 479 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 43 | 0 | 13 | 0 | 13 | | | | | | |
| 480 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 48 | 0 | 0 | 0 | 0 | | | | | | |
| 481 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 60 | 0 | 60 | 0 | 60 | | | | | | |
| 482 | 2023 | 2 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 13 | | 0 | | 0 | | | | | | |
| 483 | 2023 | 2 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 484 | 2023 | 2 | Alabama | Indeterminate/unknown | | | | School/college/university | 13 | 0 | 0 | 0 | 0 | | | | | | |
| 485 | 2023 | 2 | Utah | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 486 | 2023 | 2 | North Carolina | Person-to-person | Astrovirus | | Suspected | School/college/university | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 487 | 2023 | 2 | Utah | Person-to-person | Norovirus unknown;Clostridium difficile | | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 15 | 1 | 15 | 0 | 15 | | | | | | |
| 488 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | Restaurant | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 489 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 0 | 0 | 0 | | | | | | |
| 490 | 2023 | 2 | Massachusetts | Indeterminate/unknown | | | | Restaurant | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 491 | 2023 | 2 | Tennessee | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 492 | 2023 | 2 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 493 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 494 | 2023 | 2 | Wisconsin | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 495 | 2023 | 2 | Minnesota | Food | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 496 | 2023 | 2 | Maryland | Food | Salmonella enterica | Oranienburg | Confirmed | | 11 | 7 | 11 | 0 | 11 | | | | | | |
| 497 | 2023 | 2 | Wyoming | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 15 | | 0 | | 0 | | | | | | |
| 498 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 30 | | 0 | | 0 | | | | | | |
| 499 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 67 | 0 | 67 | 0 | 67 | | | | | | |
| 500 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 91 | 0 | 91 | 0 | 91 | | | | | | |
| 501 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 502 | 2023 | 2 | Virginia | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 6 | 1 | 6 | 0 | 6 | | | | | | |
| 503 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 504 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 40 | 0 | 40 | 0 | 40 | | | | | | |
| 505 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup I | GII.P17 GII.17;unknown | Confirmed;Suspected | Hospital | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 506 | 2023 | 2 | Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 507 | 2023 | 2 | North Carolina | Food | Norovirus Genogroup II | GII.4 Sydney | Confirmed | | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 508 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 509 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Child daycare/preschool | 28 | | 0 | | 0 | | | | | | |
| 510 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 188 | 0 | 188 | 0 | 188 | | | | | | |
| 511 | 2023 | 2 | Virginia | Person-to-person | | | | School/college/university | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 512 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 513 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 514 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 515 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 72 | 0 | 72 | 0 | 72 | | | | | | |
| 516 | 2023 | 2 | Virginia | Person-to-person | | | | School/college/university | 50 | 0 | 50 | 0 | 50 | | | | | | |
| 517 | 2023 | 2 | Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 518 | 2023 | 2 | Virginia | Person-to-person | | | | School/college/university | 53 | | 0 | | 0 | | | | | | |
| 519 | 2023 | 2 | Virginia | Indeterminate/unknown | Norovirus Genogroup I | GI.P13 GI.3 | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 520 | 2023 | 2 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 1 | 13 | | | | | | |
| 521 | 2023 | 2 | Texas | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 24 | 5 | 24 | 0 | 24 | | | | | | |
| 522 | 2023 | 2 | Montana | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | | 0 | | 0 | | | | | | |
| 523 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 524 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 525 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 0 | 0 | 0 | 0 | | | | | | |
| 526 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 527 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 15 | 1 | 15 | 0 | 15 | | | | | | |
| 528 | 2023 | 2 | Montana | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 32 | 0 | 32 | 0 | 32 | | | | | | |
| 529 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 530 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 531 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 34 | 4 | 34 | 1 | 34 | | | | | | |
| 532 | 2023 | 2 | Wyoming | Person-to-person | | | | | 37 | | 0 | | 0 | | | | | | |
| 533 | 2023 | 2 | Ohio | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 534 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Other | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 535 | 2023 | 2 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | | 60 | 0 | 60 | 0 | 60 | | | | | | |
| 536 | 2023 | 2 | Indiana | Person-to-person | Rotavirus | | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 0 | 0 | 0 | 0 | | | | | | |
| 537 | 2023 | 2 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 538 | 2023 | 2 | New Mexico | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 539 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 2 | 6 | 0 | 0 | | | | | | |
| 540 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 37 | 1 | 37 | 0 | 37 | | | | | | |
| 541 | 2023 | 2 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 542 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 543 | 2023 | 2 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 21 | 1 | 21 | 0 | 21 | | | | | | |
| 544 | 2023 | 2 | Tennessee | Indeterminate/unknown | Norovirus unknown | | Suspected | Restaurant | 6 | 0 | 3 | 0 | 3 | | | | | | |
| 545 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 546 | 2023 | 2 | Ohio | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 547 | 2023 | 2 | North Carolina | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 548 | 2023 | 2 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P17 GII.17 | Suspected | Long-term care/nursing home/assisted living facility | 34 | 0 | 33 | 0 | 33 | | | | | | |
| 549 | 2023 | 2 | Ohio | Person-to-person | Astrovirus;Norovirus Genogroup II | GII.P7 GII.7 | Confirmed;Confirmed | Child daycare/preschool | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 550 | 2023 | 2 | Utah | Food | Norovirus | | Suspected | Other | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 551 | 2023 | 2 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 10 | 0 | 8 | 0 | 8 | | | | | | |
| 552 | 2023 | 2 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 553 | 2023 | 2 | Tennessee | Person-to-person | Norovirus Genogroup I | GI.P4 GI.5 | Confirmed | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 554 | 2023 | 2 | Ohio | Water | Legionella pneumophila | unknown | Confirmed | Correctional/detention facility | 2 | 2 | 2 | 0 | 2 | | | | Drinking water | Unknown | |
| 555 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 556 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 557 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 29 | 3 | 29 | 0 | 29 | | | | | | |
| 558 | 2023 | 2 | Alabama | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 559 | 2023 | 2 | Ohio | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 560 | 2023 | 2 | Ohio | Indeterminate/unknown | Norovirus | | Suspected | School/college/university | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 561 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 69 | 0 | 69 | 0 | 69 | | | | | | |
| 562 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 51 | 0 | 51 | 0 | 51 | | | | | | |
| 563 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 564 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 85 | 1 | 85 | 0 | 85 | | | | | | |
| 565 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 49 | 0 | 49 | 0 | 49 | | | | | | |
| 566 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 567 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 568 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 569 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P17 GII.17;unknown | Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 570 | 2023 | 2 | Virginia | Indeterminate/unknown | Norovirus unknown | | Suspected | Child daycare/preschool | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 571 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;GII.P16 GII.4 Sydney;unknown | Confirmed;Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 572 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 1 | 1 | | 0 | | | | | | |
| 573 | 2023 | 2 | Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 574 | 2023 | 2 | Massachusetts | Indeterminate/unknown | Norovirus unknown | | Suspected | School/college/university | 8 | 1 | 8 | 0 | 8 | | | | | | |
| 575 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 576 | 2023 | 2 | Utah | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 577 | 2023 | 2 | Wisconsin | Food | Norovirus Genogroup I | GI.P11 GI.6 | Confirmed | | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 578 | 2023 | 2 | Ohio | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 44 | 0 | 44 | 0 | 44 | | | | | | |
| 579 | 2023 | 2 | New Mexico | Person-to-person | Norovirus Genogroup II | GII.4 Sydney | Confirmed | Correctional/detention facility | 51 | 0 | 0 | 0 | 0 | | | | | | |
| 580 | 2023 | 2 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P12 GII.3 | Confirmed | Long-term care/nursing home/assisted living facility | 47 | 2 | 42 | 0 | 42 | | | | | | |
| 581 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 8 | | 0 | | 0 | | | | | | |
| 582 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 1 | 28 | 1 | 28 | | | | | | |
| 583 | 2023 | 2 | Indiana | Person-to-person | | | | School/college/university | 41 | 0 | 0 | 0 | 0 | | | | | | |
| 584 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 585 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 586 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 1 | 10 | 0 | 10 | | | | | | |
| 587 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 41 | 2 | 41 | 0 | 41 | | | | | | |
| 588 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown;Norovirus Genogroup I;Norovirus Genogroup I | GI.P13 GI.3;unknown | Confirmed;Suspected;Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 589 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 590 | 2023 | 2 | Ohio | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 39 | 2 | 39 | 0 | 39 | | | | | | |
| 591 | 2023 | 2 | Ohio | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hospital | 5 | 5 | 5 | 3 | 5 | | | | Drinking water | Community | |
| 592 | 2023 | 2 | Tennessee | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 593 | 2023 | 2 | Minnesota | Person-to-person | Norovirus Genogroup II | GII.P12 GII.3 | Suspected | Child daycare/preschool | 32 | 0 | 32 | 0 | 32 | | | | | | |
| 594 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | | 0 | | 0 | | | | | | |
| 595 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 596 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P7 GII.7 | Confirmed | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 597 | 2023 | 2 | Tennessee | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 6 | 1 | 6 | 0 | 6 | | | | | | |
| 598 | 2023 | 2 | Alabama | Person-to-person | Norovirus Genogroup II | | Suspected | Restaurant | 3 | 1 | 1 | 0 | 0 | | | | | | |
| 599 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 65 | 0 | 65 | 0 | 65 | | | | | | |
| 600 | 2023 | 2 | Minnesota | Water | Chlorine | | Suspected | Hotel/motel | 70 | 0 | 70 | 0 | 70 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool;Pool - Kiddie/Wading, Permanent | |
| 601 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 602 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 603 | 2023 | 2 | Nebraska | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II;Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 untypeable;unknown;GII.P16 GII.4 Sydney;unknown | Suspected;Suspected;Suspected;Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 604 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 12 | 1 | 12 | 0 | 12 | | | | | | |
| 605 | 2023 | 2 | Tennessee | Food | Salmonella enterica | Saintpaul | Suspected | Restaurant: Sit-down dining | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 606 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | Cryptosporidium unknown | | Suspected | Residence - Single-family home | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 607 | 2023 | 2 | Nebraska | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Child daycare/preschool | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 608 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 609 | 2023 | 2 | Ohio | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 610 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 611 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 612 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Suspected | School/college/university | 59 | 0 | 59 | 0 | 59 | | | | | | |
| 613 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 614 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 615 | 2023 | 2 | Virginia | Person-to-person | Escherichia coli, Shiga toxin-producing;Rotavirus | unknown | Suspected;Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 616 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 617 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 618 | 2023 | 2 | Virginia | Person-to-person | | | | Child daycare/preschool | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 619 | 2023 | 2 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P7 GII.7 | Confirmed | Residence - Single-family home | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 620 | 2023 | 2 | Colorado | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 30 | 0 | 0 | 0 | 30 | | | | | | |
| 621 | 2023 | 2 | Alabama | Person-to-person | Norovirus Genogroup II;Escherichia coli, Enteropathogenic | unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 622 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 623 | 2023 | 2 | North Carolina | Food | Norovirus Genogroup II | | Suspected | Unknown | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 624 | 2023 | 2 | Ohio | Person-to-person | Salmonella enterica | Enteritidis | Suspected | Other | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 625 | 2023 | 2 | Texas | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 1 | 6 | 0 | 0 | | | | | | |
| 626 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 627 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 628 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Other healthcare facility | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 629 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 39 | 0 | 39 | 0 | 39 | | | | | | |
| 630 | 2023 | 2 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 631 | 2023 | 2 | Texas | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 49 | 4 | 49 | 0 | 49 | | | | | | |
| 632 | 2023 | 2 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 31 | | 0 | | 0 | | | | | | |
| 633 | 2023 | 2 | Wyoming | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 59 | 0 | 35 | 0 | 35 | | | | | | |
| 634 | 2023 | 2 | Ohio | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 635 | 2023 | 2 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 31 | 0 | 0 | 0 | 31 | | | | | | |
| 636 | 2023 | 2 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 7 | 1 | 7 | 0 | 7 | | | | | | |
| 637 | 2023 | 2 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 638 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 639 | 2023 | 2 | Texas | Food | Norovirus unknown | | Confirmed | Food truck/street vendor | 28 | 0 | 28 | 0 | 28 | coffee | | Other | | | |
| 640 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 641 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 36 | 1 | 36 | 0 | 36 | | | | | | |
| 642 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 0 | 0 | 0 | 0 | | | | | | |
| 643 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 644 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 15 | 1 | 15 | 1 | 15 | | | | | | |
| 645 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 646 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus unknown;Clostridium difficile | | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 7 | 1 | 7 | 0 | 7 | | | | | | |
| 647 | 2023 | 2 | Wisconsin | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 648 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 649 | 2023 | 2 | Pennsylvania | Food | Norovirus Genogroup II | | Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 650 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 38 | 0 | 0 | 0 | 0 | | | | | | |
| 651 | 2023 | 2 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 40 | 0 | 30 | 1 | 30 | | | | | | |
| 652 | 2023 | 2 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 21 | 0 | 16 | 0 | 16 | | | | | | |
| 653 | 2023 | 2 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 654 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 40 | 1 | 40 | 1 | 40 | | | | | | |
| 655 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 656 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 19 | | 0 | | 0 | | | | | | |
| 657 | 2023 | 2 | South Carolina | Food | Norovirus unknown;Staphylococcus aureus | | Suspected;Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 658 | 2023 | 2 | Indiana | Person-to-person | Norovirus | | Suspected | School/college/university | 146 | | 0 | | 0 | | | | | | |
| 659 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 73 | 0 | 73 | 0 | 73 | | | | | | |
| 660 | 2023 | 2 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 8 | 0 | 7 | 0 | 7 | | | | | | |
| 661 | 2023 | 2 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 662 | 2023 | 2 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 54 | 0 | 54 | 0 | 54 | | | | | | |
| 663 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;unknown | Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 42 | 1 | 42 | 0 | 42 | | | | | | |
| 664 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 4 | 1 | 4 | 0 | 4 | | | | | | |
| 665 | 2023 | 2 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 666 | 2023 | 2 | Alabama | Indeterminate/unknown | | | | School/college/university | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 667 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 668 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 38 | 1 | 38 | 0 | 38 | | | | | | |
| 669 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 670 | 2023 | 2 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 671 | 2023 | 2 | Alabama | Indeterminate/unknown | | | | School/college/university | 2 | 0 | 0 | 0 | 0 | | | | | | |
| 672 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 673 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 21 | 1 | 21 | 0 | 21 | | | | | | |
| 674 | 2023 | 2 | Ohio | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 untypeable;GII.P16 GII.4 Sydney | Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 18 | 1 | 18 | 0 | 18 | | | | | | |
| 675 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 42 | 0 | 42 | 0 | 42 | | | | | | |
| 676 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 677 | 2023 | 2 | Virginia | Person-to-person | Rotavirus | | Confirmed | Long-term care/nursing home/assisted living facility | 32 | | 0 | | 0 | | | | | | |
| 678 | 2023 | 2 | Kansas | Food | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Restaurant: Sit-down dining | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 679 | 2023 | 2 | Kansas | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 26 | | 0 | | 0 | | | | | | |
| 680 | 2023 | 2 | Vermont | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 681 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Hospital | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 682 | 2023 | 2 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 1 | 26 | 0 | 26 | | | | | | |
| 683 | 2023 | 2 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 684 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 685 | 2023 | 2 | Ohio | Person-to-person | Norovirus;Clostridium difficile | | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 63 | 7 | 58 | 1 | 63 | | | | | | |
| 686 | 2023 | 2 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 40 | 0 | 20 | 0 | 20 | | | | | | |
| 687 | 2023 | 2 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 688 | 2023 | 2 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 689 | 2023 | 2 | New Hampshire | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 25 | 0 | 0 | 0 | 0 | | | | | | |
| 690 | 2023 | 2 | Florida | Food | Norovirus Genogroup II | unknown | Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | oysters | | Mollusks | | | |
| 691 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 89 | 0 | 89 | 0 | 89 | | | | | | |
| 692 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 693 | 2023 | 2 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | Other | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 694 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 695 | 2023 | 2 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 696 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 697 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 698 | 2023 | 2 | Virginia | Indeterminate/unknown | Norovirus Genogroup II | other other | Confirmed | Child daycare/preschool | 5 | | 0 | | 0 | | | | | | |
| 699 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 700 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 48 | 0 | 48 | 0 | 48 | | | | | | |
| 701 | 2023 | 2 | Nebraska | Person-to-person | Norovirus unknown | | Confirmed | Hospital | 12 | 2 | 12 | 0 | 12 | | | | | | |
| 702 | 2023 | 2 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 99 | | 0 | | 0 | | | | | | |
| 703 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 704 | 2023 | 2 | Nebraska | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 705 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 706 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 707 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 708 | 2023 | 2 | Ohio | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 25 | | 0 | | 0 | | | | | | |
| 709 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 710 | 2023 | 2 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 50 | 2 | 41 | 0 | 41 | | | | | | |
| 711 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 46 | | 0 | | 0 | | | | | | |
| 712 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 713 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 714 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 715 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 32 | 0 | 32 | 0 | 32 | | | | | | |
| 716 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 717 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 718 | 2023 | 2 | Texas | Indeterminate/unknown | Campylobacter unknown | | Confirmed | Factory/industrial facility | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 719 | 2023 | 2 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 1 | 11 | 0 | 11 | | | | | | |
| 720 | 2023 | 2 | Florida | Food | Neurotoxic shellfish poison | | Suspected | Residence - Single-family home | 2 | 0 | 2 | | | sea snail | | Mollusks | | | |
| 721 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 1 | 1 | 0 | 1 | | | | | | |
| 722 | 2023 | 2 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 723 | 2023 | 2 | Wisconsin | Food | Norovirus unknown | | Suspected | | 11 | 0 | 0 | 0 | 0 | | | | | | |
| 724 | 2023 | 2 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 17 | | 0 | | 0 | | | | | | |
| 725 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 726 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 41 | | 0 | | 0 | | | | | | |
| 727 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 728 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 48 | 3 | 48 | 0 | 48 | | | | | | |
| 729 | 2023 | 2 | Kentucky | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 untypeable;GII.P16 GII.4 Sydney | Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 68 | 0 | 53 | 0 | 0 | | | | | | |
| 730 | 2023 | 2 | Vermont | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 50 | | 0 | | 0 | | | | | | |
| 731 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | | 0 | | 0 | | | | | | |
| 732 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | | | | School/college/university | 35 | | 0 | | 0 | | | | | | |
| 733 | 2023 | 2 | New York | Person-to-person | Norovirus Genogroup II | GII.7 | Confirmed | Hotel/motel | 17 | 0 | 9 | 0 | 17 | | | | | | |
| 734 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 62 | 0 | 62 | 0 | 62 | | | | | | |
| 735 | 2023 | 2 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 3 | | 0 | | 0 | | | | | | |
| 736 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 737 | 2023 | 2 | Tennessee | Food | Campylobacter jejuni | | Confirmed | Restaurant: Other | 3 | 0 | 3 | 0 | 3 | chicken liver pate | | Chicken | | | |
| 738 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus Genogroup II | | Confirmed | Long-term care/nursing home/assisted living facility | 22 | 1 | 22 | 0 | 22 | | | | | | |
| 739 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 740 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Restaurant | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 741 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 742 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 743 | 2023 | 2 | Vermont | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 62 | | 0 | | 0 | | | | | | |
| 744 | 2023 | 2 | Nevada | Person-to-person | | | | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 745 | 2023 | 2 | Nevada | Person-to-person | | | | School/college/university | 6 | 0 | 0 | 0 | 0 | | | | | | |
| 746 | 2023 | 2 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 47 | 0 | 0 | 0 | 0 | | | | | | |
| 747 | 2023 | 2 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 748 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 65 | 0 | 65 | 0 | 65 | | | | | | |
| 749 | 2023 | 2 | Oregon | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | School/college/university | 155 | 0 | 10 | 0 | 10 | | | | | | |
| 750 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | School/college/university | 61 | 0 | 11 | 0 | 11 | | | | | | |
| 751 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 752 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 753 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 34 | 1 | 34 | 0 | 34 | | | | | | |
| 754 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 755 | 2023 | 2 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 756 | 2023 | 2 | Michigan | Food | | | | Restaurant: Fast-food (drive up service or pay at counter) | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 757 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 758 | 2023 | 2 | Colorado | Food | | | | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 759 | 2023 | 2 | Colorado | Food | | | | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 760 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 82 | 3 | 82 | 1 | 82 | | | | | | |
| 761 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 762 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 0 | | | | | | |
| 763 | 2023 | 2 | Colorado | Food | Norovirus Genogroup II | unknown | Suspected | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 764 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 765 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 766 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 767 | 2023 | 2 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 768 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 769 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 770 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 97 | 0 | 0 | 0 | 0 | | | | | | |
| 771 | 2023 | 2 | Oregon | Person-to-person | | | | School/college/university | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 772 | 2023 | 2 | Florida | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hospital | 3 | 3 | 3 | 0 | 3 | | | | Drinking water | Community | |
| 773 | 2023 | 2 | Florida | Food | Norovirus unknown | | Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | Mashed potatoes and Gravy | | Multiple | | | |
| 774 | 2023 | 2 | New Hampshire | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 775 | 2023 | 2 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 86 | 0 | 86 | 0 | 86 | | | | | | |
| 776 | 2023 | 2 | New Hampshire | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 63 | 2 | 63 | 0 | 63 | | | | | | |
| 777 | 2023 | 2 | New Hampshire | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | 20 | 0 | 20 | | | | | | |
| 778 | 2023 | 2 | New Hampshire | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 779 | 2023 | 2 | South Carolina | Food | Campylobacter jejuni | | Confirmed | | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 780 | 2023 | 2 | North Carolina | Person-to-person | Norovirus | | Suspected | School/college/university | 41 | 0 | 41 | 0 | 41 | | | | | | |
| 781 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 27 | | 0 | | 0 | | | | | | |
| 782 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | Norovirus unknown | | Suspected | Child daycare/preschool | 6 | | 0 | | 0 | | | | | | |
| 783 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | Norovirus unknown | | Suspected | School/college/university | 56 | | 0 | | 0 | | | | | | |
| 784 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | Norovirus unknown | | Suspected | Child daycare/preschool | 22 | | 0 | | 0 | | | | | | |
| 785 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 72 | 1 | 72 | 1 | 72 | | | | | | |
| 786 | 2023 | 2 | Oregon | Person-to-person | | | | School/college/university | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 787 | 2023 | 2 | Oregon | Person-to-person | | | | | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 788 | 2023 | 2 | Oregon | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | School/college/university | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 789 | 2023 | 2 | Oregon | Person-to-person | | | | School/college/university | 46 | 0 | 46 | 0 | 46 | | | | | | |
| 790 | 2023 | 2 | Oregon | Person-to-person | | | | School/college/university | 44 | 0 | 44 | 0 | 44 | | | | | | |
| 791 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 131 | 0 | 131 | 0 | 131 | | | | | | |
| 792 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 1 | 17 | 0 | 17 | | | | | | |
| 793 | 2023 | 2 | Colorado | Person-to-person | | | | School/college/university | 48 | 0 | 48 | 0 | 48 | | | | | | |
| 794 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 34 | | 0 | | 0 | | | | | | |
| 795 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | Norovirus | | Suspected | Restaurant | 15 | | 0 | | 0 | | | | | | |
| 796 | 2023 | 2 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 51 | | 0 | | 0 | | | | | | |
| 797 | 2023 | 2 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 30 | 0 | 18 | 0 | 18 | | | | | | |
| 798 | 2023 | 2 | Connecticut | Person-to-person | Clostridium difficile | | Suspected | Long-term care/nursing home/assisted living facility | 32 | 0 | 28 | 0 | 28 | | | | | | |
| 799 | 2023 | 2 | Mississippi | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 800 | 2023 | 2 | Mississippi | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 801 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 802 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 803 | 2023 | 2 | Puerto Rico | Food | Norovirus unknown | | Suspected | Restaurant: Fast-food (drive up service or pay at counter);Grocery store/bakery/deli/convenience store | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 804 | 2023 | 2 | Tennessee | Person-to-person | Salmonella enterica | Enteritidis | Confirmed | Long-term care/nursing home/assisted living facility | 3 | 2 | 3 | 0 | 3 | | | | | | |
| 805 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown;Norovirus unknown | | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 51 | 0 | 51 | 0 | 51 | | | | | | |
| 806 | 2023 | 2 | Colorado | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 807 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 808 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 809 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 810 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 113 | 0 | 113 | 0 | 113 | | | | | | |
| 811 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 52 | 0 | 52 | 0 | 52 | | | | | | |
| 812 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 813 | 2023 | 2 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 814 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 815 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 104 | 0 | 104 | 0 | 104 | | | | | | |
| 816 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 56 | 0 | 56 | 0 | 56 | | | | | | |
| 817 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 818 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 819 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Office/indoor workplace | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 820 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 821 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 822 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 823 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 824 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 10 | 3 | 10 | 0 | 10 | | | | | | |
| 825 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 79 | 0 | 79 | 0 | 79 | | | | | | |
| 826 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 827 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 828 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 829 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 830 | 2023 | 2 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 831 | 2023 | 2 | Nevada | Person-to-person | Norovirus Genogroup II | unknown | Suspected | School/college/university | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 832 | 2023 | 2 | Nevada | Person-to-person | Norovirus Genogroup II | unknown | Suspected | School/college/university | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 833 | 2023 | 2 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 60 | 1 | 43 | 1 | 43 | | | | | | |
| 834 | 2023 | 2 | Nevada | Person-to-person | | | | | 12 | | 0 | | 0 | | | | | | |
| 835 | 2023 | 2 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 39 | 0 | 39 | 0 | 39 | | | | | | |
| 836 | 2023 | 2 | New Hampshire | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 368 | 0 | 285 | 0 | 285 | | | | | | |
| 837 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 838 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 839 | 2023 | 2 | Oregon | Person-to-person | | | | School/college/university | 54 | 0 | 54 | 0 | 54 | | | | | | |
| 840 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 841 | 2023 | 2 | Colorado | Food | Clostridium perfringens | | Suspected | Correctional/detention facility | 139 | 1 | 139 | 0 | 139 | spanish rice;beans, unspecified | | Multiple | | | |
| 842 | 2023 | 2 | Texas | Indeterminate/unknown | | | | Child daycare/preschool | 25 | 0 | 0 | 0 | 0 | | | | | | |
| 843 | 2023 | 2 | Multistate | Environmental contamination other than food/water | Escherichia coli, Shiga toxin-producing | O157:H7 | Confirmed | School/college/university | 10 | 3 | 9 | 0 | 8 | | | | | | |
| 844 | 2023 | 2 | Vermont | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 845 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 846 | 2023 | 2 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 847 | 2023 | 2 | Oregon | Person-to-person | | | | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 848 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 1 | 10 | 0 | 10 | | | | | | |
| 849 | 2023 | 2 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 850 | 2023 | 2 | Illinois | Animal contact | Cryptosporidium unknown | | Confirmed | Farm/dairy/agricultural setting | 3 | 0 | 3 | 0 | 3 | | | | | | Cattle |
| 851 | 2023 | 2 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 14 | 0 | 0 | 0 | 0 | | | | | | |
| 852 | 2023 | 2 | Illinois | Indeterminate/unknown | Cryptosporidium | | Confirmed | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 853 | 2023 | 2 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 46 | 0 | 37 | 0 | 37 | | | | | | |
| 854 | 2023 | 2 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 10 | | 0 | 0 | 0 | | | | | | |
| 855 | 2023 | 2 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 28 | | 0 | 0 | 0 | | | | | | |
| 856 | 2023 | 2 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 857 | 2023 | 2 | North Carolina | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 2 | 2 | 2 | | 0 | | | | Undetermined water | | |
| 858 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 4 | 2 | 2 | 0 | 0 | | | | | | |
| 859 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 21 | 3 | 3 | 1 | 1 | | | | | | |
| 860 | 2023 | 2 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 0 | 3 | 0 | 26 | | | | | | |
| 861 | 2023 | 2 | Illinois | Person-to-person | Norovirus Genogroup I | unknown | Suspected | Long-term care/nursing home/assisted living facility | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 862 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 863 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 50 | 0 | 0 | 0 | 0 | | | | | | |
| 864 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 865 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 41 | 0 | 41 | 0 | 41 | | | | | | |
| 866 | 2023 | 2 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 25 | 0 | 0 | 0 | 0 | | | | | | |
| 867 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 868 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 869 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 59 | 10 | 59 | 0 | 59 | | | | | | |
| 870 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Hospital | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 871 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Other | 26 | 0 | 0 | 0 | 0 | | | | | | |
| 872 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Other | 2 | 0 | 0 | 0 | 0 | | | | | | |
| 873 | 2023 | 2 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 32 | 1 | 1 | 0 | 0 | | | | | | |
| 874 | 2023 | 2 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 33 | 1 | 33 | 0 | 33 | | | | | | |
| 875 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 876 | 2023 | 2 | Illinois | Person-to-person | Norovirus Genogroup I;Norovirus Genogroup II | unknown | Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 877 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 1 | 18 | 0 | 18 | | | | | | |
| 878 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 1 | 1 | 0 | 0 | | | | | | |
| 879 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 23 | 3 | 23 | 0 | 23 | | | | | | |
| 880 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 9 | 2 | 2 | 0 | 0 | | | | | | |
| 881 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 32 | 1 | 32 | 0 | 32 | | | | | | |
| 882 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 1 | 28 | 0 | 28 | | | | | | |
| 883 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 18 | 6 | 18 | 0 | 18 | | | | | | |
| 884 | 2023 | 2 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 32 | 3 | 32 | 0 | 32 | | | | | | |
| 885 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 1 | 1 | 0 | 0 | | | | | | |
| 886 | 2023 | 2 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Other | 11 | 0 | 0 | 0 | 0 | | | | | | |
| 887 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 31 | 4 | 4 | 0 | 0 | | | | | | |
| 888 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 24 | 1 | 1 | 0 | 0 | | | | | | |
| 889 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 890 | 2023 | 2 | Arizona | Person-to-person | | | | School/college/university | 19 | 0 | 12 | 0 | 12 | | | | | | |
| 891 | 2023 | 2 | Arizona | Person-to-person | | | | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 892 | 2023 | 2 | Arizona | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Shelter/group home/transitional housing | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 893 | 2023 | 2 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 894 | 2023 | 2 | Arizona | Person-to-person | Norovirus unknown;Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 untypeable;unknown | Confirmed;Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 895 | 2023 | 2 | Arizona | Person-to-person | | | | School/college/university | 100 | 0 | 100 | 0 | 100 | | | | | | |
| 896 | 2023 | 2 | Multistate | Food | Salmonella enterica | Enteritidis | Confirmed | Restaurant: Other | 26 | 4 | 23 | 0 | 24 | RAW COOKIE DOUGH | | Multiple | | | |
| 897 | 2023 | 2 | Florida | Food | Ciguatoxin | | Confirmed | Grocery store/bakery/deli/convenience store | 2 | 0 | 2 | 0 | 2 | fish, reef like | | Fish | | | |
| 898 | 2023 | 2 | Florida | Water | Legionella pneumophila | serogroup 1 | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 6 | 6 | 3 | 6 | | | | Drinking water | Community | |
| 899 | 2023 | 2 | Illinois | Food | Norovirus unknown | | Suspected | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 900 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 64 | 0 | 0 | 0 | 0 | | | | | | |
| 901 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 55 | 0 | 0 | 0 | 0 | | | | | | |
| 902 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 70 | 0 | 0 | 0 | 0 | | | | | | |
| 903 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 102 | 0 | 0 | 0 | 0 | | | | | | |
| 904 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 147 | 0 | 0 | 0 | 0 | | | | | | |
| 905 | 2023 | 2 | South Carolina | Water | Legionella pneumophila | serogroup 1 | Suspected | Unknown | 5 | 1 | 5 | 0 | 5 | | | | Undetermined water | | |
| 906 | 2023 | 2 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 55 | 8 | 8 | 0 | 0 | | | | | | |
| 907 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 908 | 2023 | 2 | Illinois | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 2 | 2 | 2 | 0 | 0 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 909 | 2023 | 2 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 90 | 0 | 90 | 0 | 90 | | | | | | |
| 910 | 2023 | 2 | Oregon | Food | Norovirus Genogroup II | unknown | Suspected | | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 911 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Confirmed | Long-term care/nursing home/assisted living facility | 50 | 2 | | | | | | | | | |
| 912 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 46 | 5 | | | | | | | | | |
| 913 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | | | | | | | | | |
| 914 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Confirmed | Long-term care/nursing home/assisted living facility | 29 | | | | | | | | | | |
| 915 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 53 | 0 | | | | | | | | | |
| 916 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | | | | | | | | | |
| 917 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 27 | | | | | | | | | | |
| 918 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 27 | 0 | | | | | | | | | |
| 919 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 43 | 0 | | | | | | | | | |
| 920 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | | | | | | | | | |
| 921 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | | | | | | | | | |
| 922 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 1 | | | | | | | | | |
| 923 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 65 | 0 | | | | | | | | | |
| 924 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 2 | | | | | | | | | |
| 925 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | | | | | | | | | | |
| 926 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | | | | | | | | | |
| 927 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 0 | 0 | 0 | | | | | | |
| 928 | 2023 | 2 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 929 | 2023 | 2 | North Dakota | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | | 0 | | 0 | | | | | | |
| 930 | 2023 | 2 | North Dakota | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 47 | | 0 | | 0 | | | | | | |
| 931 | 2023 | 2 | North Dakota | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 28 | | 0 | | 0 | | | | | | |
| 932 | 2023 | 2 | Oregon | Person-to-person | | | | School/college/university | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 933 | 2023 | 2 | Multistate | Animal contact | Salmonella enterica | Enteritidis | Confirmed | Agricultural feed store;Residence - Multi-unit housing;Residence - Single-family home | 35 | 6 | 24 | 0 | 23 | | | | | | Poultry |
| 934 | 2023 | 2 | Idaho | Animal contact | Campylobacter | | Suspected | Residence - Single-family home | 3 | 0 | 3 | 0 | 3 | | | | | | Dog or puppy |
| 935 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | | 16 | 0 | 0 | 0 | 0 | | | | | | |
| 936 | 2023 | 2 | Washington | Food | Listeria monocytogenes | | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 6 | 6 | 6 | 3 | 6 | Milk Shake | | Multiple | | | |
| 937 | 2023 | 2 | Arizona | Food | | | | | 96 | 0 | 96 | 0 | 96 | | | | | | |
| 938 | 2023 | 2 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 7 | | 0 | | 0 | | | | | | |
| 939 | 2023 | 2 | Florida | Water | Legionella unknown | | Confirmed | Hotel/motel | 2 | 2 | 2 | 2 | 2 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 940 | 2023 | 2 | Kansas | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | | 0 | | 0 | | | | | | |
| 941 | 2023 | 2 | Kansas | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 114 | | 0 | | 0 | | | | | | |
| 942 | 2023 | 2 | Multistate | Animal contact | Salmonella enterica | Braenderup | Confirmed | Residence - Multi-unit housing;Residence - Single-family home | 91 | 16 | 72 | 0 | 69 | | | | | | Poultry |
| 943 | 2023 | 2 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | Residence - Multi-unit housing | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 944 | 2023 | 2 | Louisiana | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 4 | 4 | 4 | 0 | 3 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 945 | 2023 | 2 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 946 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 37 | 2 | 37 | 0 | 37 | | | | | | |
| 947 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 948 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 45 | 0 | 45 | 0 | 45 | | | | | | |
| 949 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus Genogroup II | GII.P8 GII.8 | Confirmed | Long-term care/nursing home/assisted living facility | 77 | 0 | 77 | 0 | 77 | | | | | | |
| 950 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus Genogroup I;Norovirus Genogroup I | GI.P13 GI.3;unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 34 | 0 | 34 | 2 | 34 | | | | | | |
| 951 | 2023 | 2 | Rhode Island | Indeterminate/unknown | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | | 0 | | 0 | | | | | | |
| 952 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 78 | 0 | 78 | 0 | 78 | | | | | | |
| 953 | 2023 | 2 | Arizona | Food | | | | | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 954 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 61 | 0 | 61 | 0 | 61 | | | | | | |
| 955 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 78 | 1 | 78 | 2 | 78 | | | | | | |
| 956 | 2023 | 2 | Kansas | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 5 | | 0 | | 0 | | | | | | |
| 957 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 958 | 2023 | 2 | California | Food | | | | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 959 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 68 | 0 | 68 | 0 | 68 | | | | | | |
| 960 | 2023 | 2 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 58 | 0 | 58 | 0 | 58 | | | | | | |
| 961 | 2023 | 2 | Missouri | Indeterminate/unknown | | | | Restaurant | 16 | 0 | 13 | 0 | 13 | | | | | | |
| 962 | 2023 | 2 | Iowa | Indeterminate/unknown | | | | Restaurant | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 963 | 2023 | 2 | Iowa | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;GII.P16 GII.4 Sydney;unknown | Confirmed;Suspected;Suspected | Long-term care/nursing home/assisted living facility | 20 | 5 | 20 | 0 | 20 | | | | | | |
| 964 | 2023 | 2 | Iowa | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 15 | 4 | 15 | 0 | 15 | | | | | | |
| 965 | 2023 | 2 | Iowa | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 5 | 28 | 0 | 28 | | | | | | |
| 966 | 2023 | 2 | Iowa | Indeterminate/unknown | | | | Restaurant | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 967 | 2023 | 2 | Iowa | Indeterminate/unknown | | | | School/college/university | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 968 | 2023 | 2 | Iowa | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 969 | 2023 | 2 | Iowa | Indeterminate/unknown | | | | School/college/university | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 970 | 2023 | 2 | Iowa | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 971 | 2023 | 2 | Iowa | Indeterminate/unknown | | | | Religious facility | 15 | 0 | 5 | 0 | | | | | | | |
| 972 | 2023 | 2 | Connecticut | Food | Norovirus | | Suspected | Restaurant: Sit-down dining | 13 | 0 | 2 | 0 | 2 | | | | | | |
| 973 | 2023 | 2 | Texas | Food | Cyclospora cayetanensis | | Confirmed | Grocery store/bakery/deli/convenience store | 110 | 9 | 108 | | | | | | | | |
| 974 | 2023 | 2 | Colorado | Water | Legionella pneumophila | serogroup 1 | Confirmed | Other | 2 | 1 | 2 | 0 | 2 | | | | Drinking water;Recreational water -- treated | Community;Hot Tub/Spa/Whirlpool | |
| 975 | 2023 | 2 | Idaho | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 46 | 0 | 2 | 0 | 46 | | | | | | |
| 976 | 2023 | 2 | Idaho | Person-to-person | Norovirus unknown | | Suspected | Residence - Single-family home | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 977 | 2023 | 2 | Idaho | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 12 | 0 | 8 | 0 | 12 | | | | | | |
| 978 | 2023 | 2 | Illinois | Food | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 11 | 1 | 11 | 0 | 11 | | | | | | |
| 979 | 2023 | 2 | Washington | Food | Norovirus | | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 7 | 0 | 6 | 0 | 6 | Bahn mi sandwiches | | Multiple | | | |
| 980 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 37 | 0 | | | | | | | | | |
| 981 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 1 | | | | | | | | | |
| 982 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | | | | | | | | | |
| 983 | 2023 | 2 | Delaware | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 33 | 1 | 33 | 0 | 33 | | | | | | |
| 984 | 2023 | 2 | Delaware | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 985 | 2023 | 2 | Delaware | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 9 | 1 | 9 | 0 | 9 | | | | | | |
| 986 | 2023 | 2 | Washington | Food | Norovirus | | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 9 | | 0 | | 0 | | | | | | |
| 987 | 2023 | 2 | Washington | Food | Norovirus | | Suspected | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 988 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 92 | 0 | 62 | 0 | 62 | | | | | | |
| 989 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 990 | 2023 | 2 | Colorado | Person-to-person | | | | School/college/university | 122 | 0 | 122 | 0 | 122 | | | | | | |
| 991 | 2023 | 2 | Indiana | Food | Norovirus Genogroup II | unknown | Confirmed | Restaurant: Sit-down dining | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 992 | 2023 | 2 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 993 | 2023 | 2 | Maine | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | | 22 | 1 | 22 | 1 | 22 | | | | | | |
| 994 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 4 | | 0 | | 0 | | | | | | |
| 995 | 2023 | 2 | Maine | Indeterminate/unknown | | | | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 996 | 2023 | 2 | Maine | Person-to-person | | | | Restaurant | 4 | | 0 | | 0 | | | | | | |
| 997 | 2023 | 2 | Maine | Person-to-person | | | | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 998 | 2023 | 2 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 999 | 2023 | 2 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 4 | | 0 | | 0 | | | | | | |
| 1000 | 2023 | 2 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 48 | 2 | 48 | 0 | 48 | | | | | | |
| 1001 | 2023 | 2 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 3 | 28 | 0 | 28 | | | | | | |
| 1002 | 2023 | 2 | Maine | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1003 | 2023 | 2 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1004 | 2023 | 2 | Maine | Person-to-person | | | | Child daycare/preschool | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1005 | 2023 | 2 | Maine | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 22 | 2 | 22 | 0 | 22 | | | | | | |
| 1006 | 2023 | 2 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Hospital | 46 | 19 | 46 | 0 | 46 | | | | | | |
| 1007 | 2023 | 2 | Maine | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 1008 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1009 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 8 | 0 | 8 | | | | | | |
| 1010 | 2023 | 2 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 7 | 0 | 5 | 0 | 5 | | | | | | |
| 1011 | 2023 | 2 | Missouri | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 1012 | 2023 | 2 | Missouri | Person-to-person | | | | Child daycare/preschool | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1013 | 2023 | 2 | Missouri | Food | Escherichia coli, Enteropathogenic;Campylobacter unknown | unknown | Suspected;Suspected | Restaurant: Sit-down dining | 8 | 0 | 8 | 0 | 8 | cheese dip | | Multiple | | | |
| 1014 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1015 | 2023 | 2 | California | Food | Norovirus unknown | | Suspected | Caterer | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 1016 | 2023 | 2 | California | Food | Norovirus unknown | | Suspected | Restaurant: Sit-down dining | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1017 | 2023 | 2 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 60 | | 0 | | 0 | | | | | | |
| 1018 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | | 37 | 0 | 37 | | 0 | | | | | | |
| 1019 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | | 18 | 1 | | | | | | | | | |
| 1020 | 2023 | 2 | Washington | Person-to-person | Norovirus | | Suspected | | 12 | 0 | | | | | | | | | |
| 1021 | 2023 | 2 | New York | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 25 | 2 | 2 | | 0 | | | | | | |
| 1022 | 2023 | 2 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1023 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 19 | | 0 | | | | | | | | |
| 1024 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1025 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 1026 | 2023 | 3 | North Carolina | Person-to-person | Norovirus Genogroup II | GII.P7 | Confirmed | Restaurant | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 1027 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 35 | 1 | 35 | | 0 | | | | | | |
| 1028 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 1029 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 1030 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup II | | Confirmed | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1031 | 2023 | 3 | New Mexico | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 16 | 0 | 0 | 0 | 0 | | | | | | |
| 1032 | 2023 | 3 | Ohio | Person-to-person | Norovirus | | Suspected | School/college/university | 111 | 0 | 94 | 0 | 94 | | | | | | |
| 1033 | 2023 | 3 | Utah | Food | | | | Residence - Single-family home | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 1034 | 2023 | 3 | Utah | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 24 | 0 | 21 | 0 | 21 | | | | | | |
| 1035 | 2023 | 3 | South Carolina | Person-to-person | Norovirus | | Suspected | School/college/university | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1036 | 2023 | 3 | South Carolina | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1037 | 2023 | 3 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1038 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 82 | 0 | 82 | 0 | 82 | | | | | | |
| 1039 | 2023 | 3 | Virginia | Person-to-person | | | | School/college/university | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1040 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1041 | 2023 | 3 | Alabama | Person-to-person | Norovirus | | Suspected | School/college/university | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1042 | 2023 | 3 | Virginia | Indeterminate/unknown | Norovirus unknown | | Confirmed | Hospital | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1043 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 1044 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown;Rotavirus | | Suspected;Suspected | School/college/university | 36 | 2 | 36 | 0 | 36 | | | | | | |
| 1045 | 2023 | 3 | Alabama | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | unknown;GII.P untypeable GII.6 | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 129 | 2 | 129 | 0 | 129 | | | | | | |
| 1046 | 2023 | 3 | North Carolina | Person-to-person | Norovirus | | Suspected | School/college/university | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1047 | 2023 | 3 | Alabama | Indeterminate/unknown | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1048 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1049 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1050 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 92 | 3 | 92 | 0 | 92 | | | | | | |
| 1051 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1052 | 2023 | 3 | Tennessee | Person-to-person | | | | Child daycare/preschool | 16 | 0 | 0 | 0 | 16 | | | | | | |
| 1053 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1054 | 2023 | 3 | Virginia | Indeterminate/unknown | | | | School/college/university | 101 | 0 | 101 | 0 | 101 | | | | | | |
| 1055 | 2023 | 3 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P7 GII.7;unknown | Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 1056 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 1057 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1058 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 18 | 2 | 18 | 0 | 18 | | | | | | |
| 1059 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1060 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1061 | 2023 | 3 | Nebraska | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 21 | 0 | 17 | 0 | 17 | | | | | | |
| 1062 | 2023 | 3 | Ohio | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1063 | 2023 | 3 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 1064 | 2023 | 3 | Wisconsin | Food | Norovirus Genogroup I | GI.P4 GI.5 | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1065 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | | 0 | | 0 | | | | | | |
| 1066 | 2023 | 3 | Indiana | Person-to-person | | | | School/college/university | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 1067 | 2023 | 3 | Alabama | Indeterminate/unknown | Norovirus Genogroup I;Norovirus Genogroup I | unknown;GI.P13 GI.3 | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 1068 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 1069 | 2023 | 3 | Nebraska | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 79 | 0 | 0 | 0 | 79 | | | | | | |
| 1070 | 2023 | 3 | Ohio | Indeterminate/unknown | Norovirus | | Suspected | Unknown | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1071 | 2023 | 3 | New Mexico | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 39 | 0 | 0 | 0 | 0 | | | | | | |
| 1072 | 2023 | 3 | New Mexico | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 32 | 0 | 0 | 0 | 0 | | | | | | |
| 1073 | 2023 | 3 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1074 | 2023 | 3 | South Carolina | Person-to-person | Norovirus Genogroup I;Adenovirus unknown | GI.2 | Confirmed;Suspected | School/college/university | 148 | 1 | 148 | 0 | 148 | | | | | | |
| 1075 | 2023 | 3 | Alabama | Person-to-person | Norovirus Genogroup I | unknown | Suspected | Child daycare/preschool | 4 | | 0 | | 0 | | | | | | |
| 1076 | 2023 | 3 | Minnesota | Food | Norovirus Genogroup II | GII.P untypeable GII.6 | Confirmed | Restaurant: Fast-food (drive up service or pay at counter);Residence - Single-family home | 5 | | 0 | 0 | 5 | | | | | | |
| 1077 | 2023 | 3 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | Hospital | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1078 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 1 | 18 | | | | | | |
| 1079 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Confirmed | Hospital | 32 | | 0 | | 0 | | | | | | |
| 1080 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1081 | 2023 | 3 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 1082 | 2023 | 3 | Virginia | Person-to-person | Sapovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 1083 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1084 | 2023 | 3 | Virginia | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1085 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 1086 | 2023 | 3 | Tennessee | Indeterminate/unknown | Norovirus Genogroup II;Norovirus Genogroup II | GII.P7 GII.6;unknown | Confirmed;Confirmed | Office/indoor workplace | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1087 | 2023 | 3 | Minnesota | Food | Norovirus Genogroup II | unknown | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1088 | 2023 | 3 | Nebraska | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 43 | | 0 | | 0 | | | | | | |
| 1089 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 1090 | 2023 | 3 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1091 | 2023 | 3 | Tennessee | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P untypeable unknown;unknown | Confirmed;Confirmed | Residence - Single-family home | 13 | 0 | 5 | 0 | 5 | | | | | | |
| 1092 | 2023 | 3 | Montana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 22 | | 0 | 0 | 22 | | | | | | |
| 1093 | 2023 | 3 | Montana | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 105 | 2 | 105 | 0 | 105 | | | | | | |
| 1094 | 2023 | 3 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1095 | 2023 | 3 | Minnesota | Water | Pseudomonas aeruginosa | unknown | Suspected | Hotel/motel | 3 | 0 | 3 | 0 | 3 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 1096 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 42 | 4 | 42 | 0 | 42 | | | | | | |
| 1097 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 55 | 2 | 55 | 1 | 55 | | | | | | |
| 1098 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1099 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1100 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 75 | 0 | 75 | 0 | 75 | | | | | | |
| 1101 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1102 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Shelter/group home/transitional housing | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1103 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Hospital | 8 | 1 | 8 | 0 | 8 | | | | | | |
| 1104 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 49 | 0 | 49 | 0 | 49 | | | | | | |
| 1105 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 148 | 1 | 148 | 0 | 148 | | | | | | |
| 1106 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1107 | 2023 | 3 | Ohio | Person-to-person | | | | Child daycare/preschool | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 1108 | 2023 | 3 | Minnesota | Indeterminate/unknown | | | | Restaurant | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1109 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1110 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Hospital | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 1111 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Hospital | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1112 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Shelter/group home/transitional housing | 4 | 1 | 4 | 0 | 4 | | | | | | |
| 1113 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 39 | 1 | 39 | 0 | 39 | | | | | | |
| 1114 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 68 | 0 | 68 | 0 | 68 | | | | | | |
| 1115 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 1 | 3 | 0 | 3 | | | | | | |
| 1116 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 1 | 14 | 0 | 14 | | | | | | |
| 1117 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 1118 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1119 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1120 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Hospital | 9 | 9 | 9 | 0 | 0 | | | | | | |
| 1121 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 43 | 2 | 43 | 0 | 43 | | | | | | |
| 1122 | 2023 | 3 | Ohio | Food | Bacillus cereus | | Suspected | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | falafel salad | | Multiple | | | |
| 1123 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 1124 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 1125 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Suspected | Long-term care/nursing home/assisted living facility | 12 | | | | | | | | | | |
| 1126 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup I | | Suspected | Event space | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1127 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 1 | 26 | | | | | | |
| 1128 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup I | GI.P3 GI.3 | Confirmed | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1129 | 2023 | 3 | Wisconsin | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1130 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 31 | 1 | 31 | 0 | 31 | | | | | | |
| 1131 | 2023 | 3 | Missouri | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 64 | 0 | 64 | 0 | 64 | | | | | | |
| 1132 | 2023 | 3 | Ohio | Person-to-person | Norovirus Genogroup II;Norovirus unknown | GII.P16 GII.4 Sydney | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 4 | 2 | 2 | | 0 | | | | | | |
| 1133 | 2023 | 3 | Minnesota | Water | | | | Hotel/motel | 11 | 0 | 11 | 0 | 11 | | | | Recreational water -- treated | Pool - Kiddie/Wading, Permanent | |
| 1134 | 2023 | 3 | Ohio | Food | Norovirus Genogroup II | GII.P17 GII.17 | Suspected | Unknown | 10 | 0 | 1 | 0 | 1 | | | | | | |
| 1135 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 1136 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1137 | 2023 | 3 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1138 | 2023 | 3 | New Mexico | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 1139 | 2023 | 3 | Ohio | Food | Norovirus Genogroup II | GII.P16 GII.12 | Suspected | Restaurant: Buffet | 8 | 0 | 3 | 0 | 3 | | | | | | |
| 1140 | 2023 | 3 | Hawaii | Person-to-person | Norovirus Genogroup II | | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 1141 | 2023 | 3 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1142 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 1143 | 2023 | 3 | Ohio | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Restaurant | 8 | 0 | 4 | 0 | 4 | | | | | | |
| 1144 | 2023 | 3 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 13 | 0 | 0 | 0 | 0 | | | | | | |
| 1145 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 1146 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 86 | 0 | 86 | 0 | 86 | | | | | | |
| 1147 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 32 | 0 | 32 | 0 | 32 | | | | | | |
| 1148 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 32 | 0 | 32 | 0 | 32 | | | | | | |
| 1149 | 2023 | 3 | Ohio | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 1150 | 2023 | 3 | New York | Indeterminate/unknown | Norovirus Genogroup II | GII.P12 GII.3 | Confirmed | Event space | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1151 | 2023 | 3 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1152 | 2023 | 3 | Virginia | Indeterminate/unknown | | | | School/college/university | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 1153 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1154 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 84 | 0 | 84 | 0 | 84 | | | | | | |
| 1155 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1156 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Hotel/motel | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 1157 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 1158 | 2023 | 3 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P4 New Orleans GII.4 Sydney;unknown | Confirmed;Suspected | Shelter/group home/transitional housing | 69 | 0 | 69 | 0 | 69 | | | | | | |
| 1159 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1160 | 2023 | 3 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1161 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 48 | 0 | 48 | 0 | 48 | | | | | | |
| 1162 | 2023 | 3 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | School/college/university | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 1163 | 2023 | 3 | Nebraska | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1164 | 2023 | 3 | South Carolina | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1165 | 2023 | 3 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1166 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 1167 | 2023 | 3 | New York | Person-to-person | Norovirus Genogroup II | other unknown | Confirmed | Long-term care/nursing home/assisted living facility | 18 | 0 | 0 | 0 | 18 | | | | | | |
| 1168 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 0 | 0 | 0 | 0 | | | | | | |
| 1169 | 2023 | 3 | Texas | Indeterminate/unknown | | | | School/college/university | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1170 | 2023 | 3 | Tennessee | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1171 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1172 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 1173 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1174 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 2 | 25 | 0 | 25 | | | | | | |
| 1175 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 0 | | | | | | |
| 1176 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 41 | 0 | 41 | 0 | 41 | | | | | | |
| 1177 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1178 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1179 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Confirmed | Hospital | 26 | | 0 | | 0 | | | | | | |
| 1180 | 2023 | 3 | Nebraska | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 2 | 19 | 0 | 19 | | | | | | |
| 1181 | 2023 | 3 | Nebraska | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 22 | 1 | 22 | 0 | 22 | | | | | | |
| 1182 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1183 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1184 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 1185 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1186 | 2023 | 3 | Michigan | Person-to-person | Norovirus Genogroup I | GI.P2 GI.2 | Suspected | Unknown | 6 | 0 | 4 | 0 | 6 | | | | | | |
| 1187 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 1188 | 2023 | 3 | Alabama | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 1189 | 2023 | 3 | Texas | Food | | | | Restaurant: Sit-down dining | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1190 | 2023 | 3 | Alabama | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1191 | 2023 | 3 | Ohio | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 1192 | 2023 | 3 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1193 | 2023 | 3 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1194 | 2023 | 3 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 44 | 3 | 44 | 0 | 44 | | | | | | |
| 1195 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 1196 | 2023 | 3 | Minnesota | Food | Norovirus Genogroup I | GI.P13 GI.3 | Confirmed | Restaurant: Sit-down dining | 6 | 0 | 6 | 0 | 6 | wine and/or beer;beer;wine | | Other | | | |
| 1197 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1198 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1199 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | | 0 | | 0 | | | | | | |
| 1200 | 2023 | 3 | Alabama | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 48 | 0 | 0 | 0 | 0 | | | | | | |
| 1201 | 2023 | 3 | Tennessee | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 45 | | 0 | 0 | 45 | | | | | | |
| 1202 | 2023 | 3 | Vermont | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P12 GII.3 | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 1203 | 2023 | 3 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P16 GII.12 | Suspected | School/college/university | 29 | 0 | 0 | 0 | 29 | | | | | | |
| 1204 | 2023 | 3 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 1205 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Event space | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1206 | 2023 | 3 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 1207 | 2023 | 3 | Minnesota | Food | Escherichia coli, Shiga toxin-producing | O103:H2 | Confirmed | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | pesto chicken sandwich | | Multiple | | | |
| 1208 | 2023 | 3 | Indiana | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 1209 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 1 | 12 | 0 | 12 | | | | | | |
| 1210 | 2023 | 3 | Oregon | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 1 | 3 | 0 | 3 | | | | | | |
| 1211 | 2023 | 3 | Oregon | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | School/college/university | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1212 | 2023 | 3 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 23 | 1 | 23 | 0 | 23 | | | | | | |
| 1213 | 2023 | 3 | Oregon | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1214 | 2023 | 3 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1215 | 2023 | 3 | Oregon | Person-to-person | | | | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1216 | 2023 | 3 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 1217 | 2023 | 3 | Oregon | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Restaurant | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1218 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1219 | 2023 | 3 | Virginia | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 38 | 2 | 38 | 0 | 38 | | | | | | |
| 1220 | 2023 | 3 | Virginia | Person-to-person | | | | School/college/university | 5 | | 0 | | 0 | | | | | | |
| 1221 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Confirmed | School/college/university | 45 | 0 | 45 | 0 | 45 | | | | | | |
| 1222 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1223 | 2023 | 3 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P12 GII.3 | Confirmed | Correctional/detention facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 1224 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1225 | 2023 | 3 | Virginia | Person-to-person | | | | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1226 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 1227 | 2023 | 3 | Michigan | Indeterminate/unknown | | | | Restaurant | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1228 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 49 | 0 | 49 | 0 | 49 | | | | | | |
| 1229 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Child daycare/preschool | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 1230 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1231 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 1232 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1233 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 0 | 0 | 0 | | | | | | |
| 1234 | 2023 | 3 | Montana | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 40 | 0 | 40 | 0 | 40 | | | | | | |
| 1235 | 2023 | 3 | Minnesota | Person-to-person | Norovirus Genogroup I;Norovirus Genogroup II;Escherichia coli, Enterotoxigenic | GI.P13 GI.3;GII.P16 GII.4 Sydney;other | Confirmed;Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 19 | | 0 | | 0 | | | | | | |
| 1236 | 2023 | 3 | Montana | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 75 | 3 | 75 | 0 | 75 | | | | | | |
| 1237 | 2023 | 3 | Montana | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 40 | 0 | 40 | 0 | 40 | | | | | | |
| 1238 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | | 0 | | 0 | | | | | | |
| 1239 | 2023 | 3 | Utah | Food | | | | Restaurant: Fast-food (drive up service or pay at counter) | 15 | 0 | 12 | 0 | 12 | Cold cut sandwich | | Multiple | | | |
| 1240 | 2023 | 3 | Texas | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | School/college/university | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 1241 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup II;Norovirus unknown | GII.P16 GII.4 untypeable | Suspected;Suspected | Unknown | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 1242 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 28 | | | | | | | | | | |
| 1243 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1244 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P7 GII.9 | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1245 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1246 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 1247 | 2023 | 3 | Wisconsin | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 17 | 1 | 17 | 1 | 17 | | | | | | |
| 1248 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus Genogroup II;Clostridium difficile | | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 40 | 1 | 40 | 0 | 40 | | | | | | |
| 1249 | 2023 | 3 | Montana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 29 | | 0 | 0 | 29 | | | | | | |
| 1250 | 2023 | 3 | Wisconsin | Person-to-person | Sapovirus | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1251 | 2023 | 3 | Ohio | Person-to-person | Adenovirus | | Confirmed | School/college/university | 46 | 1 | 46 | 0 | 46 | | | | | | |
| 1252 | 2023 | 3 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Suspected | Long-term care/nursing home/assisted living facility | 4 | 1 | 4 | 0 | 4 | | | | | | |
| 1253 | 2023 | 3 | Alabama | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 55 | | 0 | | 0 | | | | | | |
| 1254 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 0 | 0 | 0 | | | | | | |
| 1255 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 1 | 0 | 1 | | | | | | |
| 1256 | 2023 | 3 | Tennessee | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 13 | 0 | 0 | 0 | 0 | | | | | | |
| 1257 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1258 | 2023 | 3 | Wyoming | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1259 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown;Norovirus Genogroup II | unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 0 | 0 | 0 | | | | | | |
| 1260 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 1 | 20 | 1 | 20 | | | | | | |
| 1261 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 1262 | 2023 | 3 | Nevada | Indeterminate/unknown | | | | School/college/university | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1263 | 2023 | 3 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 1264 | 2023 | 3 | Ohio | Person-to-person | Norovirus Genogroup II;Norovirus unknown | GII.P16 GII.4 Sydney | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 32 | 3 | 31 | 1 | 31 | | | | | | |
| 1265 | 2023 | 3 | Ohio | Person-to-person | Norovirus;Rotavirus | | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 19 | 1 | 19 | 0 | 18 | | | | | | |
| 1266 | 2023 | 3 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 1267 | 2023 | 3 | Oregon | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1268 | 2023 | 3 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1269 | 2023 | 3 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 1 | 26 | 0 | 26 | | | | | | |
| 1270 | 2023 | 3 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 1271 | 2023 | 3 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 87 | 0 | 87 | 0 | 87 | | | | | | |
| 1272 | 2023 | 3 | Oregon | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 3 | 28 | 0 | 28 | | | | | | |
| 1273 | 2023 | 3 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Hospital | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1274 | 2023 | 3 | Minnesota | Water | | | | Park - Amusement/Waterpark | 6 | 0 | 6 | 0 | 6 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool;Pool - Kiddie/Wading, Permanent;Pool - Other Swimming Pool | |
| 1275 | 2023 | 3 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 1276 | 2023 | 3 | Florida | Food | Staphylococcus unknown | | Suspected | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1277 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1278 | 2023 | 3 | Ohio | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1279 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Other healthcare facility | 23 | 1 | 23 | 0 | 23 | | | | | | |
| 1280 | 2023 | 3 | Florida | Food | Neurotoxic shellfish poison | | Suspected | Residence - Single-family home | 4 | 2 | 4 | | | conch | | Mollusks | | | |
| 1281 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1282 | 2023 | 3 | Virginia | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1283 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 1284 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 1285 | 2023 | 3 | Virginia | Indeterminate/unknown | Shigella flexneri | unknown | Confirmed | School/college/university | 19 | 1 | 19 | 0 | 19 | | | | | | |
| 1286 | 2023 | 3 | Florida | Water | Legionella pneumophila | serogroup 1 | Confirmed | Mobile home/trailer park | 2 | 2 | 2 | 0 | 2 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 1287 | 2023 | 3 | Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 46 | 0 | 46 | 0 | 46 | | | | | | |
| 1288 | 2023 | 3 | Florida | Food | Norovirus unknown | | Suspected | | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1289 | 2023 | 3 | Texas | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 11 | | 0 | | 0 | | | | | | |
| 1290 | 2023 | 3 | New Hampshire | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 39 | 0 | 29 | 0 | 29 | | | | | | |
| 1291 | 2023 | 3 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 96 | 1 | 66 | 0 | 66 | | | | | | |
| 1292 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 1293 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 1294 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Hospital | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1295 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 1 | 3 | 0 | 3 | | | | | | |
| 1296 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1297 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1298 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Hospital | 5 | 4 | 5 | 0 | 5 | | | | | | |
| 1299 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 13 | 4 | 13 | 0 | 13 | | | | | | |
| 1300 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 0 | 0 | 0 | | | | | | |
| 1301 | 2023 | 3 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 19 | 1 | 19 | 1 | 19 | | | | | | |
| 1302 | 2023 | 3 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1303 | 2023 | 3 | Wyoming | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 52 | | 0 | | 0 | | | | | | |
| 1304 | 2023 | 3 | Montana | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 7 | | 0 | | 0 | | | | | | |
| 1305 | 2023 | 3 | Montana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 6 | | 0 | | 0 | | | | | | |
| 1306 | 2023 | 3 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1307 | 2023 | 3 | Ohio | Food | Campylobacter unknown | | Suspected | Farm/dairy/agricultural setting | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1308 | 2023 | 3 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 1309 | 2023 | 3 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 1 | 14 | 0 | 14 | | | | | | |
| 1310 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 87 | 0 | 87 | 1 | 87 | | | | | | |
| 1311 | 2023 | 3 | Minnesota | Person-to-person | Salmonella enterica | I 4,[5],12:i:- | Confirmed | School/college/university | 3 | 1 | 3 | 0 | 3 | | | | | | |
| 1312 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 2 | 0 | 2 | | | | | | |
| 1313 | 2023 | 3 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 36 | 0 | 22 | 0 | 22 | | | | | | |
| 1314 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 34 | 0 | 18 | 0 | 18 | | | | | | |
| 1315 | 2023 | 3 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 21 | 2 | 21 | 0 | 21 | | | | | | |
| 1316 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 1317 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 45 | 0 | 45 | 0 | 45 | | | | | | |
| 1318 | 2023 | 3 | Pennsylvania | Indeterminate/unknown | | | | Restaurant | 24 | 0 | 13 | 0 | 13 | | | | | | |
| 1319 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 23 | 1 | 23 | 0 | 23 | | | | | | |
| 1320 | 2023 | 3 | Colorado | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1321 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 20 | 5 | 20 | 0 | 20 | | | | | | |
| 1322 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 51 | 0 | 51 | 0 | 51 | | | | | | |
| 1323 | 2023 | 3 | Colorado | Person-to-person | Sapovirus unknown | | Suspected | Other | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1324 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 6 | 6 | 0 | 6 | | | | | | |
| 1325 | 2023 | 3 | Pennsylvania | Person-to-person | Sapovirus unknown;Norovirus unknown | | Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 1326 | 2023 | 3 | Indiana | Person-to-person | Norovirus Genogroup I | GI.P4 GI.5 | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 1327 | 2023 | 3 | Kentucky | Person-to-person | Norovirus Genogroup II | GII.P4 New Orleans GII.4 Sydney | Confirmed | Correctional/detention facility | 38 | 2 | 38 | 0 | 38 | | | | | | |
| 1328 | 2023 | 3 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 1 | 14 | 0 | 14 | | | | | | |
| 1329 | 2023 | 3 | Utah | Food | Campylobacter jejuni;Escherichia coli, Shiga toxin-producing | unknown | Confirmed;Confirmed | Farm/dairy/agricultural setting | 3 | 2 | 3 | 0 | 3 | Raw Milk | milk, unpasteurized | Dairy | | | |
| 1330 | 2023 | 3 | Virginia | Indeterminate/unknown | | | | School/college/university | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1331 | 2023 | 3 | Mississippi | Food | Norovirus Genogroup II | unknown | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 26 | | 0 | 0 | 26 | | | | | | |
| 1332 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 1333 | 2023 | 3 | Nevada | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | unknown | Confirmed;Confirmed | School/college/university | 33 | 1 | 33 | 0 | 0 | | | | | | |
| 1334 | 2023 | 3 | Mississippi | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 37 | 1 | 37 | 0 | 37 | | | | | | |
| 1335 | 2023 | 3 | Mississippi | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 1336 | 2023 | 3 | Alabama | Person-to-person | | | | Child daycare/preschool | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1337 | 2023 | 3 | Oregon | Food | Norovirus Genogroup II | unknown | Confirmed | | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1338 | 2023 | 3 | Oregon | Person-to-person | | | | School/college/university | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 1339 | 2023 | 3 | Oregon | Food | Norovirus unknown | | Suspected | Unknown | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 1340 | 2023 | 3 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 1341 | 2023 | 3 | Puerto Rico | Indeterminate/unknown | | | | Residence - Single-family home | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1342 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 170 | 0 | 170 | 0 | 170 | | | | | | |
| 1343 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 1344 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1345 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 1346 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Restaurant | 6 | 0 | 5 | 0 | 5 | | | | | | |
| 1347 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1348 | 2023 | 3 | Nevada | Person-to-person | | | | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1349 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 42 | 0 | 42 | 0 | 42 | | | | | | |
| 1350 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1351 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1352 | 2023 | 3 | Michigan | Person-to-person | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1353 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Residence - Multi-unit housing | 52 | 0 | 52 | 0 | 52 | | | | | | |
| 1354 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 1355 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1356 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1357 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1358 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 56 | 0 | 56 | 0 | 56 | | | | | | |
| 1359 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1360 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 93 | 0 | 93 | 0 | 93 | | | | | | |
| 1361 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 92 | 0 | 92 | 0 | 92 | | | | | | |
| 1362 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 121 | 0 | 121 | 0 | 121 | | | | | | |
| 1363 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1364 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Child daycare/preschool | 42 | 0 | 42 | 0 | 42 | | | | | | |
| 1365 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 1366 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1367 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 1368 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 2 | 9 | 0 | 0 | | | | | | |
| 1369 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 1370 | 2023 | 3 | Colorado | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 44 | 1 | 44 | 0 | 44 | | | | | | |
| 1371 | 2023 | 3 | Colorado | Food | Norovirus unknown | | Suspected | Restaurant: Sit-down dining | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1372 | 2023 | 3 | Colorado | Person-to-person | Norovirus Genogroup I;Norovirus Genogroup II | unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 1373 | 2023 | 3 | Nevada | Person-to-person | | | | Child daycare/preschool | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1374 | 2023 | 3 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 1 | 6 | 0 | 6 | | | | | | |
| 1375 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown;Norovirus unknown | | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1376 | 2023 | 3 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 1377 | 2023 | 3 | Colorado | Indeterminate/unknown | Norovirus Genogroup I | | Suspected | Restaurant | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1378 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 1379 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1380 | 2023 | 3 | Colorado | Food | Norovirus unknown;Norovirus unknown | | Suspected;Suspected | Restaurant: Sit-down dining | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1381 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1382 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1383 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 53 | 1 | 53 | 0 | 53 | | | | | | |
| 1384 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 62 | 0 | 62 | 0 | 62 | | | | | | |
| 1385 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1386 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 48 | 2 | 48 | 0 | 48 | | | | | | |
| 1387 | 2023 | 3 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1388 | 2023 | 3 | Minnesota | Person-to-person | Rotavirus | | Confirmed | Child daycare/preschool | 49 | 0 | 49 | 0 | 49 | | | | | | |
| 1389 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 90 | 0 | 90 | 0 | 90 | | | | | | |
| 1390 | 2023 | 3 | Connecticut | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 45 | 0 | 26 | 0 | 26 | | | | | | |
| 1391 | 2023 | 3 | Puerto Rico | Indeterminate/unknown | | | | Residence - Single-family home | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1392 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1393 | 2023 | 3 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 34 | 1 | 34 | 0 | 34 | | | | | | |
| 1394 | 2023 | 3 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 14 | 2 | 14 | 0 | 14 | | | | | | |
| 1395 | 2023 | 3 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 1396 | 2023 | 3 | Florida | Food | Scombroid toxin | | Confirmed | Residence - Single-family home | 2 | 0 | 2 | 0 | 2 | Amberjack | | Fish | | | |
| 1397 | 2023 | 3 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1398 | 2023 | 3 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1399 | 2023 | 3 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 45 | 0 | 45 | 0 | 45 | | | | | | |
| 1400 | 2023 | 3 | New Hampshire | Person-to-person | | | | Restaurant | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1401 | 2023 | 3 | Oregon | Person-to-person | | | | School/college/university | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1402 | 2023 | 3 | Nevada | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 2 | | | 0 | 2 | | | | | | |
| 1403 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 93 | 0 | 68 | 0 | 68 | | | | | | |
| 1404 | 2023 | 3 | Connecticut | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 46 | 4 | 30 | 1 | 30 | | | | | | |
| 1405 | 2023 | 3 | Kentucky | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1406 | 2023 | 3 | Minnesota | Person-to-person | Salmonella enterica;Norovirus Genogroup II | Senftenberg;GII.P16 GII.4 Sydney | Suspected;Confirmed | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1407 | 2023 | 3 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 23 | | 0 | | 0 | | | | | | |
| 1408 | 2023 | 3 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 20 | | 0 | | 0 | | | | | | |
| 1409 | 2023 | 3 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 24 | | 0 | | 0 | | | | | | |
| 1410 | 2023 | 3 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 40 | | 0 | | 0 | | | | | | |
| 1411 | 2023 | 3 | Louisiana | Person-to-person | Norovirus;Norovirus Genogroup II;Norovirus Genogroup II | GII.P untypeable GII.6;unknown | Suspected;Suspected;Suspected | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 1412 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 43 | 0 | 26 | 0 | 26 | | | | | | |
| 1413 | 2023 | 3 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 69 | 0 | 35 | 0 | 35 | | | | | | |
| 1414 | 2023 | 3 | Vermont | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 1415 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 2 | 28 | 0 | 28 | | | | | | |
| 1416 | 2023 | 3 | Vermont | Person-to-person | Norovirus | | Suspected | School/college/university | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 1417 | 2023 | 3 | Vermont | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P4 New Orleans GII.4 untypeable;unknown | Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 82 | 2 | 82 | 1 | 82 | | | | | | |
| 1418 | 2023 | 3 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Other healthcare facility | 24 | 0 | 24 | 0 | 0 | | | | | | |
| 1419 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 43 | 0 | 26 | 0 | 26 | | | | | | |
| 1420 | 2023 | 3 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 213 | 0 | 213 | 0 | 213 | | | | | | |
| 1421 | 2023 | 3 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 69 | 0 | 35 | 0 | 35 | | | | | | |
| 1422 | 2023 | 3 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 44 | 2 | 44 | 0 | 44 | | | | | | |
| 1423 | 2023 | 3 | Colorado | Indeterminate/unknown | Campylobacter jejuni | | Confirmed | Other | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1424 | 2023 | 3 | Utah | Food | Salmonella enterica | Typhimurium | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1425 | 2023 | 3 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 1 | 10 | 0 | 10 | | | | | | |
| 1426 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 44 | 2 | 37 | 0 | 37 | | | | | | |
| 1427 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown;Clostridium difficile | | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 24 | 3 | 17 | 0 | 17 | | | | | | |
| 1428 | 2023 | 3 | Illinois | Animal contact | Cryptosporidium unknown | | Suspected | Farm/dairy/agricultural setting | 5 | 0 | 5 | 0 | 5 | | | | | | Cattle |
| 1429 | 2023 | 3 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 1430 | 2023 | 3 | Illinois | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 16 | 0 | 0 | 0 | 0 | | | | | | |
| 1431 | 2023 | 3 | Illinois | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 29 | 3 | 3 | 0 | 0 | | | | | | |
| 1432 | 2023 | 3 | Illinois | Indeterminate/unknown | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 1 | 1 | 0 | 0 | | | | | | |
| 1433 | 2023 | 3 | Illinois | Indeterminate/unknown | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 1434 | 2023 | 3 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 8 | | 0 | | 0 | | | | | | |
| 1435 | 2023 | 3 | West Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 45 | 0 | 45 | 0 | 45 | | | | | | |
| 1436 | 2023 | 3 | West Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1437 | 2023 | 3 | West Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 61 | 1 | 61 | 0 | 61 | | | | | | |
| 1438 | 2023 | 3 | West Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 15 | 1 | 15 | 0 | 15 | | | | | | |
| 1439 | 2023 | 3 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1440 | 2023 | 3 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 27 | 1 | 27 | 0 | 27 | | | | | | |
| 1441 | 2023 | 3 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1442 | 2023 | 3 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 46 | 0 | 46 | 0 | 46 | | | | | | |
| 1443 | 2023 | 3 | West Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 48 | 4 | 48 | 0 | 48 | | | | | | |
| 1444 | 2023 | 3 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 1445 | 2023 | 3 | South Carolina | Person-to-person | Escherichia coli, Shiga toxin-producing;Norovirus unknown | O157 | Suspected;Suspected | School/college/university | 20 | 0 | 14 | 0 | 14 | | | | | | |
| 1446 | 2023 | 3 | New York | Water | Chlorine Gas | | Confirmed | Recreational facility | 4 | 0 | 3 | 0 | 3 | | | | Recreational water -- treated | Pool - Other Swimming Pool | |
| 1447 | 2023 | 3 | Colorado | Food | Norovirus Genogroup II | unknown | Confirmed | Restaurant: Sit-down dining | 189 | 0 | 0 | 0 | 187 | | | | | | |
| 1448 | 2023 | 3 | Massachusetts | Animal contact | Cryptosporidium unknown | | Confirmed | Farm/dairy/agricultural setting | 4 | 0 | 0 | 0 | 0 | | | | | | Cattle |
| 1449 | 2023 | 3 | Kentucky | Indeterminate/unknown | Clostridium difficile;Adenovirus unknown;Escherichia coli, Unknown;Rotavirus;Norovirus unknown | | Suspected;Confirmed;Confirmed;Confirmed;Confirmed | Child daycare/preschool | 35 | 1 | 1 | 0 | 0 | | | | | | |
| 1450 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 27 | 1 | 1 | 0 | 0 | | | | | | |
| 1451 | 2023 | 3 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 1452 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 5 | 0 | 0 | 0 | 0 | | | | | | |
| 1453 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 1454 | 2023 | 3 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 1455 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 1456 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 0 | 0 | 0 | | | | | | |
| 1457 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 1458 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 0 | 0 | 0 | | | | | | |
| 1459 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 12 | 1 | 1 | 0 | 0 | | | | | | |
| 1460 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 2 | 1 | 1 | 0 | 0 | | | | | | |
| 1461 | 2023 | 3 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 1462 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1463 | 2023 | 3 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 2 | 0 | 0 | 0 | 0 | | | | | | |
| 1464 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 2 | 8 | 0 | 8 | | | | | | |
| 1465 | 2023 | 3 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 46 | 2 | 2 | 0 | 0 | | | | | | |
| 1466 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 35 | 0 | 0 | 0 | 0 | | | | | | |
| 1467 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 5 | 5 | 0 | 0 | | | | | | |
| 1468 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 1469 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1470 | 2023 | 3 | Oregon | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 1471 | 2023 | 3 | Multistate | Food | Salmonella enterica | Liverpool | Confirmed | Unknown | 10 | 4 | 7 | 0 | 8 | | | | | | |
| 1472 | 2023 | 3 | Arkansas | Person-to-person | | | | School/college/university | 25 | 0 | 20 | 0 | 25 | | | | | | |
| 1473 | 2023 | 3 | Arizona | Person-to-person | | | | Child daycare/preschool | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1474 | 2023 | 3 | Arizona | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1475 | 2023 | 3 | Arizona | Person-to-person | | | | Child daycare/preschool | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1476 | 2023 | 3 | Arizona | Person-to-person | | | | Hospital | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1477 | 2023 | 3 | Arizona | Person-to-person | | | | Other | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 1478 | 2023 | 3 | Arizona | Food | | | | | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1479 | 2023 | 3 | Multistate | Food | Salmonella enterica | Bareilly | Confirmed | | 24 | 7 | 18 | 0 | 20 | | | | | | |
| 1480 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 2 | 2 | 2 | 0 | 0 | | | | | | |
| 1481 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 1482 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 21 | 0 | 0 | 0 | 0 | | | | | | |
| 1483 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 2 | 2 | 0 | 0 | | | | | | |
| 1484 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1485 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 22 | | 0 | 0 | 0 | | | | | | |
| 1486 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 86 | 0 | 0 | 0 | 0 | | | | | | |
| 1487 | 2023 | 3 | Alabama | Water | Legionella pneumophila | serogroup 1 | Confirmed | Military facility | 2 | 2 | 2 | 0 | 2 | | | | Undetermined water | | |
| 1488 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 1489 | 2023 | 3 | Oregon | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 68 | 0 | 68 | 0 | 68 | | | | | | |
| 1490 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 0 | | | | | | | | | |
| 1491 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | | | | | | | | | |
| 1492 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | | | | | | | | | | |
| 1493 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 7 | | | | | | | | | | |
| 1494 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 32 | 0 | | | | | | | | | |
| 1495 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 5 | | | | | | | | | | |
| 1496 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 34 | 0 | | | | | | | | | |
| 1497 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | | | | | | | | | |
| 1498 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 22 | | | | | | | | | | |
| 1499 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | | | | | | | | | |
| 1500 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | | | | | | | | | | |
| 1501 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 31 | 0 | | | | | | | | | |
| 1502 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Confirmed | Hospital | 8 | | | | | | | | | | |
| 1503 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 34 | 0 | | | | | | | | | |
| 1504 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | | | | | | | | | | |
| 1505 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 17 | | | | | | | | | | |
| 1506 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 11 | | | | | | | | | | |
| 1507 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | | | | | | | | | |
| 1508 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | | | | | | | | | | |
| 1509 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 1 | | | | | | | | | |
| 1510 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 9 | | | | | | | | | | |
| 1511 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | | | | | | | | | |
| 1512 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 7 | | | | | | | | | |
| 1513 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | | | | | | | | | | |
| 1514 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 51 | 0 | | | | | | | | | |
| 1515 | 2023 | 3 | Illinois | Person-to-person | Clostridium difficile | | Confirmed | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1516 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 49 | 0 | 49 | 0 | 49 | | | | | | |
| 1517 | 2023 | 3 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 1518 | 2023 | 3 | Arizona | Person-to-person | Cryptosporidium parvum | unknown | Confirmed | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1519 | 2023 | 3 | Puerto Rico | Person-to-person | | | | School/college/university | 8 | 0 | 7 | 0 | 7 | | | | | | |
| 1520 | 2023 | 3 | North Dakota | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 7 | | 0 | | 0 | | | | | | |
| 1521 | 2023 | 3 | North Dakota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 26 | | 0 | | 0 | | | | | | |
| 1522 | 2023 | 3 | North Dakota | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | | 0 | | 0 | | | | | | |
| 1523 | 2023 | 3 | North Dakota | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 1 | 15 | | 0 | | | | | | |
| 1524 | 2023 | 3 | North Dakota | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | | 0 | | 0 | | | | | | |
| 1525 | 2023 | 3 | Montana | Food | | | | Restaurant: Sit-down dining | 51 | 3 | 51 | 2 | 51 | morel mushrooms | | Fungi | | | |
| 1526 | 2023 | 3 | Georgia | Food | Bacillus cereus | | Suspected | Restaurant: Sit-down dining | 3 | 1 | 3 | 0 | 3 | fried rice with shrimp | | Multiple | | | |
| 1527 | 2023 | 3 | Massachusetts | Water | Legionella pneumophila | unknown | Confirmed | Residence - Single-family home | 2 | 2 | 2 | 0 | 2 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 1528 | 2023 | 3 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 50 | 0 | 0 | 0 | 0 | | | | | | |
| 1529 | 2023 | 3 | Illinois | Person-to-person | Enterovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | | 0 | | 0 | | | | | | |
| 1530 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 1531 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1532 | 2023 | 3 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Hospital | 3 | 3 | 3 | 0 | 3 | | | | | | |
| 1533 | 2023 | 3 | Multistate | Animal contact | Salmonella enterica | Enteritidis | Confirmed | Agricultural feed store;Residence - Single-family home;Residence - Multi-unit housing | 120 | 30 | 92 | 0 | 90 | | | | | | Poultry |
| 1534 | 2023 | 3 | Multistate | Animal contact | Salmonella enterica | Enteritidis | Confirmed | Residence - Multi-unit housing;Agricultural feed store;Residence - Single-family home | 227 | 78 | 182 | 0 | 181 | | | | | | Poultry |
| 1535 | 2023 | 3 | Multistate | Animal contact | Salmonella enterica | Enteritidis | Confirmed | Agricultural feed store;Residence - Multi-unit housing;Residence - Single-family home | 25 | 4 | 17 | 0 | 17 | | | | | | Poultry |
| 1536 | 2023 | 3 | Florida | Food | Listeria monocytogenes | | Confirmed | Restaurant: Buffet | 4 | 4 | 4 | 0 | 4 | cut produce | | N/A | | | |
| 1537 | 2023 | 3 | Multistate | Animal contact | Salmonella enterica | Braenderup | Confirmed | Residence - Single-family home;Residence - Multi-unit housing | 73 | 18 | 52 | 0 | 52 | | | | | | Poultry |
| 1538 | 2023 | 3 | Multistate | Animal contact | Salmonella enterica | Mbandaka | Confirmed | Residence - Single-family home;Residence - Multi-unit housing | 93 | 18 | 65 | 0 | 61 | | | | | | Poultry |
| 1539 | 2023 | 3 | Multistate | Animal contact | Salmonella enterica | Mbandaka | Confirmed | Residence - Multi-unit housing;Residence - Single-family home | 63 | 14 | 37 | 0 | 40 | | | | | | Poultry |
| 1540 | 2023 | 3 | Pennsylvania | Food | | | | Restaurant: Sit-down dining | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1541 | 2023 | 3 | Multistate | Animal contact | Salmonella enterica | Typhimurium | Confirmed | Residence - Multi-unit housing;Residence - Single-family home | 74 | 18 | 52 | 0 | 55 | | | | | | Poultry |
| 1542 | 2023 | 3 | Multistate | Animal contact | Salmonella enterica | Indiana | Confirmed | Residence - Multi-unit housing;Residence - Single-family home | 37 | 7 | 22 | 0 | 24 | | | | | | Poultry |
| 1543 | 2023 | 3 | Rhode Island | Indeterminate/unknown | | | | Restaurant | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1544 | 2023 | 3 | Rhode Island | Indeterminate/unknown | Norovirus Genogroup II | unknown | Confirmed | Residence - Single-family home | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1545 | 2023 | 3 | Rhode Island | Environmental contamination other than food/water | Norovirus Genogroup II | unknown | Suspected | Restaurant | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1546 | 2023 | 3 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | School/college/university | 9 | | 0 | 0 | 9 | | | | | | |
| 1547 | 2023 | 3 | Oregon | Person-to-person | | | | School/college/university | 25 | 0 | 0 | 0 | 0 | | | | | | |
| 1548 | 2023 | 3 | Arizona | Person-to-person | | | | Child daycare/preschool | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 1549 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 2 | 20 | 0 | 20 | | | | | | |
| 1550 | 2023 | 3 | Puerto Rico | Indeterminate/unknown | Norovirus Genogroup I | unknown | Confirmed | Restaurant | 6 | 4 | 6 | 0 | 6 | | | | | | |
| 1551 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus Genogroup I;Norovirus Genogroup II;Norovirus unknown;Sapovirus unknown | unknown | Confirmed;Suspected;Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 94 | 0 | 94 | 0 | 94 | | | | | | |
| 1552 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown;Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;unknown | Suspected;Suspected;Suspected | Long-term care/nursing home/assisted living facility | 51 | 2 | 51 | 1 | 51 | | | | | | |
| 1553 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | unknown;GII.P16 GII.4 Sydney | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 51 | 0 | 51 | 0 | 51 | | | | | | |
| 1554 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | unknown;GII.P16 GII.4 Sydney | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1555 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 1556 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1557 | 2023 | 3 | Wisconsin | Food | Norovirus | | Confirmed | | 73 | 0 | 73 | 0 | 73 | | | | | | |
| 1558 | 2023 | 3 | Wisconsin | Food | Norovirus Genogroup II | GII.P7 GII.7 | Confirmed | Caterer | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1559 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 64 | 0 | 64 | 0 | 64 | | | | | | |
| 1560 | 2023 | 3 | Rhode Island | Person-to-person | Sapovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1561 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;unknown | Suspected;Suspected | Other | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 1562 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown;Norovirus Genogroup II;Norovirus Genogroup II | GII.P untypeable GII.6;unknown | Suspected;Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 49 | 0 | 49 | 0 | 49 | | | | | | |
| 1563 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 1564 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | unknown;GII.P16 GII.4 Sydney | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 51 | 1 | 51 | 1 | 51 | | | | | | |
| 1565 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1566 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown;Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;unknown | Suspected;Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1567 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 11 | 1 | 11 | 0 | 11 | | | | | | |
| 1568 | 2023 | 3 | Kansas | Food | Salmonella enterica | Enteritidis | Confirmed | Correctional/detention facility | 61 | 0 | 61 | 0 | 61 | Chili Macaroni | chicken | Chicken | | | |
| 1569 | 2023 | 3 | Kansas | Food | | | | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1570 | 2023 | 3 | Montana | Person-to-person | | | | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1571 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Shelter/group home/transitional housing | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1572 | 2023 | 3 | Illinois | Food | Norovirus Genogroup II | unknown | Confirmed | | 32 | 0 | 0 | 0 | 0 | | | | | | |
| 1573 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 1574 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 49 | 0 | 49 | 0 | 49 | | | | | | |
| 1575 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 89 | 1 | 89 | 0 | 89 | | | | | | |
| 1576 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1577 | 2023 | 3 | Montana | Person-to-person | | | | Child daycare/preschool | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1578 | 2023 | 3 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | Child daycare/preschool | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1579 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 22 | 1 | 22 | 0 | 22 | | | | | | |
| 1580 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1581 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 13 | 0 | 12 | 0 | 13 | | | | | | |
| 1582 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 26 | 0 | 20 | 0 | 20 | | | | | | |
| 1583 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1584 | 2023 | 3 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | School/college/university | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1585 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 55 | 0 | 55 | 0 | 55 | | | | | | |
| 1586 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 53 | 0 | 53 | 0 | 53 | | | | | | |
| 1587 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1588 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 1589 | 2023 | 3 | Missouri | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 1590 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 45 | 0 | 45 | 0 | 45 | | | | | | |
| 1591 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 1592 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1593 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1594 | 2023 | 3 | Rhode Island | Indeterminate/unknown | Norovirus unknown | | Suspected | School/college/university | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1595 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 7 | 1 | 7 | 0 | 7 | | | | | | |
| 1596 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 1597 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1598 | 2023 | 3 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1599 | 2023 | 3 | Montana | Person-to-person | | | | Child daycare/preschool | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1600 | 2023 | 3 | Minnesota | Water | Chloramines | | Suspected | Hotel/motel | 19 | 0 | 19 | 0 | 19 | | | | Recreational water -- treated | Pool - Other Swimming Pool | |
| 1601 | 2023 | 3 | Arizona | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1602 | 2023 | 3 | Vermont | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 70 | 1 | 70 | 0 | 70 | | | | | | |
| 1603 | 2023 | 3 | Iowa | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P7 GII.7;unknown | Suspected;Suspected | Hotel/motel | 41 | 0 | 41 | 0 | 41 | | | | | | |
| 1604 | 2023 | 3 | Iowa | Person-to-person | Norovirus Genogroup I | GI.P4 GI.4 | Confirmed | Restaurant | 7 | 0 | 4 | 0 | 4 | | | | | | |
| 1605 | 2023 | 3 | Iowa | Person-to-person | | | | School/college/university | 63 | 0 | 63 | 0 | 63 | | | | | | |
| 1606 | 2023 | 3 | Iowa | Person-to-person | Norovirus Genogroup I;Norovirus Genogroup I | GI.P11 GI.6;unknown | Confirmed;Suspected | Restaurant | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1607 | 2023 | 3 | Iowa | Indeterminate/unknown | | | | | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1608 | 2023 | 3 | Iowa | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Restaurant | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1609 | 2023 | 3 | Iowa | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1610 | 2023 | 3 | Colorado | Animal contact | Salmonella enterica | I 4,[5],12:i:- | Confirmed | Farm/dairy/agricultural setting | 8 | 0 | 8 | 0 | 8 | | | | | | Pig |
| 1611 | 2023 | 3 | Georgia | Food | Salmonella enterica | Rubislaw | Confirmed | Religious facility | 4 | 1 | 4 | 0 | 4 | | | | | | |
| 1612 | 2023 | 3 | Missouri | Person-to-person | Norovirus Genogroup II | GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 32 | 4 | 32 | 0 | 32 | | | | | | |
| 1613 | 2023 | 3 | Missouri | Indeterminate/unknown | | | | Unknown | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1614 | 2023 | 3 | Idaho | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 44 | 0 | 44 | 0 | 39 | | | | | | |
| 1615 | 2023 | 3 | Utah | Indeterminate/unknown | Norovirus unknown | | Suspected | Unknown | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1616 | 2023 | 3 | Massachusetts | Indeterminate/unknown | Salmonella enterica | Berta | Confirmed | School/college/university | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 1617 | 2023 | 3 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 1618 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | | | | | | | | | |
| 1619 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | | | | | | | | | |
| 1620 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 122 | 0 | | | | | | | | | |
| 1621 | 2023 | 3 | Delaware | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 40 | 0 | 40 | 0 | 40 | | | | | | |
| 1622 | 2023 | 3 | Montana | Food | | | | | 4 | 1 | 1 | 0 | 0 | | | | | | |
| 1623 | 2023 | 3 | Florida | Water | Legionella pneumophila | unknown | Confirmed | Hotel/motel | 2 | 1 | 1 | 0 | 1 | | | | Drinking water | Transient Noncommunity | |
| 1624 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus | | Confirmed | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 1625 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 59 | 1 | 59 | 0 | 59 | | | | | | |
| 1626 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 38 | 0 | 38 | 0 | 38 | | | | | | |
| 1627 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 1 | 10 | 0 | 10 | | | | | | |
| 1628 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 68 | 0 | 68 | 0 | 68 | | | | | | |
| 1629 | 2023 | 3 | Colorado | Person-to-person | Norovirus | | Suspected | School/college/university | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1630 | 2023 | 3 | Colorado | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1631 | 2023 | 3 | Multistate | Food | Salmonella enterica | Berta | Confirmed | Unknown | 37 | 6 | 30 | 0 | 32 | | | | | | |
| 1632 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1633 | 2023 | 3 | Colorado | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1634 | 2023 | 3 | Illinois | Person-to-person | Shigella flexneri | | Confirmed | Other | 9 | 2 | 9 | 0 | 9 | | | | | | |
| 1635 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown;Norovirus unknown | | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 11 | 1 | 11 | 0 | 11 | | | | | | |
| 1636 | 2023 | 3 | Colorado | Person-to-person | Norovirus | | Suspected | School/college/university | 52 | 0 | 52 | 0 | 52 | | | | | | |
| 1637 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Other healthcare facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1638 | 2023 | 3 | Colorado | Person-to-person | Norovirus | | Suspected | School/college/university | 63 | 0 | 0 | 0 | 0 | | | | | | |
| 1639 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 8 | 0 | 0 | 0 | 8 | | | | | | |
| 1640 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 108 | 0 | 108 | 0 | 108 | | | | | | |
| 1641 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 11 | 1 | 11 | 0 | 11 | | | | | | |
| 1642 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 1 | 19 | 0 | 19 | | | | | | |
| 1643 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 39 | 0 | 39 | 0 | 39 | | | | | | |
| 1644 | 2023 | 3 | Colorado | Person-to-person | | | | School/college/university | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 1645 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 1 | 17 | 0 | 17 | | | | | | |
| 1646 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Hospital | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1647 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | School/college/university | 165 | 0 | 165 | 0 | 165 | | | | | | |
| 1648 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1649 | 2023 | 3 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 135 | 0 | 135 | 0 | 135 | | | | | | |
| 1650 | 2023 | 3 | Maine | Person-to-person | | | | Shelter/group home/transitional housing | 4 | | 0 | | 0 | | | | | | |
| 1651 | 2023 | 3 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1652 | 2023 | 3 | Maine | Water | Pseudomonas aeruginosa | unknown | Confirmed | Hotel/motel | 23 | 0 | 0 | 0 | 0 | | | | Recreational water -- treated | Pool - Other Swimming Pool | |
| 1653 | 2023 | 3 | Maine | Indeterminate/unknown | | | | Child daycare/preschool | 3 | | 0 | | 0 | | | | | | |
| 1654 | 2023 | 3 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 5 | | 0 | | 0 | | | | | | |
| 1655 | 2023 | 3 | Multistate | Person-to-person | | | | Organized camp facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1656 | 2023 | 3 | Maine | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 20 | 1 | 20 | 0 | 20 | | | | | | |
| 1657 | 2023 | 3 | Maine | Person-to-person | Rotavirus | | Confirmed | Long-term care/nursing home/assisted living facility | 44 | 1 | 44 | 0 | 44 | | | | | | |
| 1658 | 2023 | 3 | Maine | Person-to-person | | | | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1659 | 2023 | 3 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 5 | 3 | 3 | 0 | 5 | | | | | | |
| 1660 | 2023 | 3 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 32 | 0 | 32 | 0 | 32 | | | | | | |
| 1661 | 2023 | 3 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 52 | 0 | 52 | 0 | 52 | | | | | | |
| 1662 | 2023 | 3 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 18 | 4 | 18 | 0 | 18 | | | | | | |
| 1663 | 2023 | 3 | Maine | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 60 | 0 | 60 | 0 | 60 | | | | | | |
| 1664 | 2023 | 3 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 34 | 1 | 1 | | 0 | | | | | | |
| 1665 | 2023 | 3 | Maine | Indeterminate/unknown | | | | School/college/university | 40 | | 0 | | 0 | | | | | | |
| 1666 | 2023 | 3 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 65 | 0 | 65 | 0 | 65 | | | | | | |
| 1667 | 2023 | 3 | Maine | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1668 | 2023 | 3 | Maine | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1669 | 2023 | 3 | Maine | Person-to-person | | | | School/college/university | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1670 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 34 | 0 | 25 | 0 | 25 | | | | | | |
| 1671 | 2023 | 3 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 0 | 13 | 0 | 13 | | | | | | |
| 1672 | 2023 | 3 | Missouri | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1673 | 2023 | 3 | California | Food | Norovirus unknown | | Suspected | Banquet Facility (food prepared and served on-site) | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1674 | 2023 | 3 | California | Food | Salmonella enterica | Mbandaka | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 51 | 0 | 35 | 0 | 35 | | | | | | |
| 1675 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | | 10 | 0 | 10 | | 0 | | | | | | |
| 1676 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | | 122 | 0 | | | | | | | | | |
| 1677 | 2023 | 3 | Washington | Person-to-person | Norovirus | | Suspected | | 19 | 0 | | | | | | | | | |
| 1678 | 2023 | 3 | Wisconsin | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1679 | 2023 | 4 | Utah | Food | | | | Residence - Single-family home | 40 | | 0 | | 0 | | | | | | |
| 1680 | 2023 | 4 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 2 | 26 | 0 | 26 | | | | | | |
| 1681 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 1682 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 2 | 9 | 0 | 9 | | | | | | |
| 1683 | 2023 | 4 | New York | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 154 | | 0 | | 0 | | | | | | |
| 1684 | 2023 | 4 | Utah | Food | Salmonella enterica | I 4,[5],12:i:- | Confirmed | Grocery store/bakery/deli/convenience store | 14 | 1 | 14 | 0 | 14 | Whole Roast Pig | | Pork | | | |
| 1685 | 2023 | 4 | Nebraska | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1686 | 2023 | 4 | Virginia | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1687 | 2023 | 4 | Ohio | Food | Norovirus unknown | | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 10 | 1 | 1 | | 0 | | | | | | |
| 1688 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 44 | 0 | 44 | 2 | 44 | | | | | | |
| 1689 | 2023 | 4 | Minnesota | Person-to-person | Norovirus Genogroup II | GII.P12 GII.3 | Confirmed | Hospital | 14 | 3 | 3 | 0 | 3 | | | | | | |
| 1690 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1691 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1692 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1693 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1694 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1695 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1696 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1697 | 2023 | 4 | Ohio | Food | Norovirus | | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1698 | 2023 | 4 | Alabama | Indeterminate/unknown | Norovirus Genogroup I | | Suspected | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1699 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 21 | 0 | 0 | 0 | 0 | | | | | | |
| 1700 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1701 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 1702 | 2023 | 4 | New Mexico | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 1703 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 43 | 3 | 43 | 0 | 43 | | | | | | |
| 1704 | 2023 | 4 | Oregon | Person-to-person | | | | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1705 | 2023 | 4 | Oregon | Person-to-person | | | | School/college/university | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1706 | 2023 | 4 | Tennessee | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 72 | 0 | 72 | 0 | 72 | | | | | | |
| 1707 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 1 | 9 | 0 | 9 | | | | | | |
| 1708 | 2023 | 4 | Ohio | Person-to-person | Norovirus | | Suspected | Other healthcare facility | 6 | | 0 | | 0 | | | | | | |
| 1709 | 2023 | 4 | Minnesota | Animal contact | Cryptosporidium parvum | other | Confirmed | School/college/university;Farm/dairy/agricultural setting | 12 | 0 | 12 | 0 | 12 | | | | | | Cattle |
| 1710 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1711 | 2023 | 4 | Ohio | Indeterminate/unknown | Salmonella enterica | Agama | Confirmed | Unknown | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1712 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Hospital | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1713 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 2 | 15 | 0 | 0 | | | | | | |
| 1714 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1715 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Hospital | 3 | 3 | 3 | 0 | 3 | | | | | | |
| 1716 | 2023 | 4 | Alabama | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1717 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 5 | | 0 | | 0 | | | | | | |
| 1718 | 2023 | 4 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 1719 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 1720 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 14 | 1 | 14 | 0 | 14 | | | | | | |
| 1721 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P untypeable | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1722 | 2023 | 4 | Alabama | Person-to-person | Norovirus | | Suspected | Event space | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 1723 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 0 | 0 | 0 | | | | | | |
| 1724 | 2023 | 4 | Montana | Person-to-person | Norovirus Genogroup I | | Suspected | Long-term care/nursing home/assisted living facility | 33 | 1 | 1 | | 0 | | | | | | |
| 1725 | 2023 | 4 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 41 | 0 | 41 | 0 | 41 | | | | | | |
| 1726 | 2023 | 4 | Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 41 | 4 | 41 | 0 | 41 | | | | | | |
| 1727 | 2023 | 4 | Virginia | Indeterminate/unknown | Norovirus unknown | | Suspected | School/college/university | 156 | 0 | 156 | 0 | 156 | | | | | | |
| 1728 | 2023 | 4 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P untypeable GII.4 untypeable;GII.P16 GII.4 Sydney | Confirmed;Confirmed | Hospital | 5 | | 0 | | 0 | | | | | | |
| 1729 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1730 | 2023 | 4 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 1731 | 2023 | 4 | Minnesota | Indeterminate/unknown | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Suspected | Restaurant | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1732 | 2023 | 4 | Utah | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 54 | 0 | 54 | 0 | 54 | | | | | | |
| 1733 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 0 | 0 | 0 | | | | | | |
| 1734 | 2023 | 4 | Mississippi | Indeterminate/unknown | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1735 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1736 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1737 | 2023 | 4 | Oregon | Person-to-person | | | | School/college/university | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1738 | 2023 | 4 | Oregon | Person-to-person | | | | School/college/university | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1739 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1740 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | Child daycare/preschool | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 1741 | 2023 | 4 | Oregon | Person-to-person | | | | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1742 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1743 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1744 | 2023 | 4 | Oregon | Person-to-person | | | | School/college/university | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1745 | 2023 | 4 | Pennsylvania | Indeterminate/unknown | Norovirus Genogroup II | unknown | Confirmed | Child daycare/preschool | 15 | 0 | 5 | 0 | 5 | | | | | | |
| 1746 | 2023 | 4 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1747 | 2023 | 4 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1748 | 2023 | 4 | South Carolina | Person-to-person | Norovirus Genogroup II | GII.16 | Confirmed | Long-term care/nursing home/assisted living facility | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 1749 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 1750 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1751 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus Genogroup I | GI.P13 GI.3 | Confirmed | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 1752 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Correctional/detention facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1753 | 2023 | 4 | Nebraska | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 21 | 0 | 8 | 0 | 8 | | | | | | |
| 1754 | 2023 | 4 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1755 | 2023 | 4 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1756 | 2023 | 4 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1757 | 2023 | 4 | Montana | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 31 | | 0 | | 0 | | | | | | |
| 1758 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 74 | 3 | 74 | 1 | 74 | | | | | | |
| 1759 | 2023 | 4 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 1 | 25 | 0 | 25 | | | | | | |
| 1760 | 2023 | 4 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1761 | 2023 | 4 | Maryland | Food | Salmonella enterica | Enteritidis | Confirmed | Restaurant: Sit-down dining | 62 | 8 | 62 | 0 | 62 | | | | | | |
| 1762 | 2023 | 4 | Ohio | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 1763 | 2023 | 4 | Tennessee | Person-to-person | Norovirus Genogroup II | GII.P16 GII.12 | Confirmed | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 1764 | 2023 | 4 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 1765 | 2023 | 4 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1766 | 2023 | 4 | Alabama | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1767 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 1768 | 2023 | 4 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1769 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 0 | 0 | 0 | 0 | | | | | | |
| 1770 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1771 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 1 | 28 | 0 | 0 | | | | | | |
| 1772 | 2023 | 4 | Massachusetts | Indeterminate/unknown | Norovirus unknown | | Confirmed | Restaurant | 12 | 0 | 0 | 0 | 0 | | | | | | |
| 1773 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1774 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | 24 | 0 | 24 | | | | | | |
| 1775 | 2023 | 4 | Pennsylvania | Person-to-person | | | | Other | 9 | | 0 | | 0 | | | | | | |
| 1776 | 2023 | 4 | Pennsylvania | Indeterminate/unknown | Campylobacter unknown | | Confirmed | Residence - Single-family home | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 1777 | 2023 | 4 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 20 | 2 | 20 | 0 | 20 | | | | | | |
| 1778 | 2023 | 4 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1779 | 2023 | 4 | Montana | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 1 | 13 | 0 | 13 | | | | | | |
| 1780 | 2023 | 4 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 1781 | 2023 | 4 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1782 | 2023 | 4 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 37 | 3 | 29 | 0 | 29 | | | | | | |
| 1783 | 2023 | 4 | Nebraska | Person-to-person | Norovirus Genogroup II | GII.P2 GII.16 | Confirmed | Long-term care/nursing home/assisted living facility | 20 | | 0 | | 0 | | | | | | |
| 1784 | 2023 | 4 | Nebraska | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | School/college/university | 89 | 0 | 89 | 0 | 89 | | | | | | |
| 1785 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1786 | 2023 | 4 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 7 | | 0 | | 0 | | | | | | |
| 1787 | 2023 | 4 | Virginia | Person-to-person | Norovirus Genogroup II;Rotavirus | unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 1788 | 2023 | 4 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1789 | 2023 | 4 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1790 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 30 | | 0 | | 0 | | | | | | |
| 1791 | 2023 | 4 | New York | Indeterminate/unknown | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 33 | 1 | 33 | 0 | 33 | | | | | | |
| 1792 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus Genogroup II | | Confirmed | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1793 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 3 | 23 | 0 | 23 | | | | | | |
| 1794 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | | 0 | | 0 | | | | | | |
| 1795 | 2023 | 4 | Tennessee | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II;Norovirus Genogroup II | unknown;GII.P16 GII.4 untypeable;unknown | Confirmed;Suspected;Suspected | Long-term care/nursing home/assisted living facility | 31 | 2 | 29 | 0 | 29 | | | | | | |
| 1796 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1797 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1798 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1799 | 2023 | 4 | Ohio | Food | Salmonella enterica | Newport | Confirmed | Restaurant: Sit-down dining | 11 | 4 | 11 | 0 | 11 | | | | | | |
| 1800 | 2023 | 4 | Florida | Food | Ciguatoxin | | Confirmed | Ship/boat | 2 | 2 | 2 | 0 | 2 | Amberjack | | Fish | | | |
| 1801 | 2023 | 4 | Alabama | Person-to-person | | | | Child daycare/preschool | 15 | 0 | 13 | 0 | 15 | | | | | | |
| 1802 | 2023 | 4 | Alabama | Person-to-person | Norovirus unknown | | Confirmed | School/college/university | 40 | 0 | 40 | 0 | 40 | | | | | | |
| 1803 | 2023 | 4 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 16 | 2 | 16 | 0 | 16 | | | | | | |
| 1804 | 2023 | 4 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1805 | 2023 | 4 | Alabama | Indeterminate/unknown | Norovirus;Escherichia coli, Enteropathogenic | | Suspected;Suspected | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1806 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 12 | 0 | 12 | | | | | | |
| 1807 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1808 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1809 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 46 | 4 | 46 | 0 | 46 | | | | | | |
| 1810 | 2023 | 4 | Alabama | Person-to-person | Clostridium difficile;Norovirus Genogroup II | unknown | Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1811 | 2023 | 4 | New Hampshire | Person-to-person | Norovirus Genogroup I | unknown | Suspected | Long-term care/nursing home/assisted living facility | 37 | 1 | 23 | 0 | 37 | | | | | | |
| 1812 | 2023 | 4 | New Hampshire | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 29 | 0 | 24 | 0 | 24 | | | | | | |
| 1813 | 2023 | 4 | Nebraska | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 1 | 19 | 0 | 19 | | | | | | |
| 1814 | 2023 | 4 | Pennsylvania | Indeterminate/unknown | Campylobacter unknown | | Confirmed | Residence - Single-family home | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1815 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1816 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1817 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1818 | 2023 | 4 | Oregon | Person-to-person | | | | School/college/university | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1819 | 2023 | 4 | Oregon | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 29 | 1 | 29 | 0 | 29 | | | | | | |
| 1820 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 29 | 2 | 29 | 0 | 29 | | | | | | |
| 1821 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1822 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 34 | 1 | 34 | 0 | 34 | | | | | | |
| 1823 | 2023 | 4 | Oregon | Person-to-person | | | | School/college/university | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1824 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | Hospital | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1825 | 2023 | 4 | Ohio | Food | Norovirus | | Suspected | Grocery store/bakery/deli/convenience store;Residence - Single-family home | 25 | | 0 | | 0 | | | | | | |
| 1826 | 2023 | 4 | Wyoming | Food | Campylobacter jejuni | | Confirmed | Residence - Single-family home | 3 | 1 | 3 | 0 | 3 | unpasteurized milk and ice cream | | Multiple | | | |
| 1827 | 2023 | 4 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1828 | 2023 | 4 | Utah | Food | Norovirus unknown | | Suspected | Restaurant: Sit-down dining | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 1829 | 2023 | 4 | Virginia | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 Sydney;unknown | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 28 | 3 | 28 | 0 | 28 | | | | | | |
| 1830 | 2023 | 4 | Virginia | Person-to-person | Rotavirus | | Suspected | School/college/university | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 1831 | 2023 | 4 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1832 | 2023 | 4 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 62 | 0 | 62 | 0 | 62 | | | | | | |
| 1833 | 2023 | 4 | Utah | Person-to-person | Rotavirus | | Confirmed | Long-term care/nursing home/assisted living facility | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 1834 | 2023 | 4 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 1835 | 2023 | 4 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 1 | 24 | 0 | 24 | | | | | | |
| 1836 | 2023 | 4 | Tennessee | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 1837 | 2023 | 4 | Tennessee | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Park/outdoor area | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1838 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1839 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 0 | 0 | 0 | | | | | | |
| 1840 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 1841 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1842 | 2023 | 4 | Wisconsin | Food | Norovirus Genogroup I | GI.P4 GI.5 | Confirmed | | 54 | 0 | 47 | 0 | 54 | | | Multiple | | | |
| 1843 | 2023 | 4 | Colorado | Indeterminate/unknown | Norovirus Genogroup II | | Suspected | Restaurant | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 1844 | 2023 | 4 | Alabama | Person-to-person | | | | Restaurant | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1845 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | | 0 | | 0 | | | | | | |
| 1846 | 2023 | 4 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 0 | 15 | 0 | 15 | | | | | | |
| 1847 | 2023 | 4 | Minnesota | Person-to-person | Norovirus unknown;Escherichia coli, Shiga toxin-producing | unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 18 | 1 | 11 | 0 | 11 | | | | | | |
| 1848 | 2023 | 4 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1849 | 2023 | 4 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1850 | 2023 | 4 | Pennsylvania | Person-to-person | | | | | 2 | | 0 | | 0 | | | | | | |
| 1851 | 2023 | 4 | Pennsylvania | Indeterminate/unknown | Campylobacter jejuni | | Confirmed | Residence - Multi-unit housing | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1852 | 2023 | 4 | Alabama | Person-to-person | Sapovirus unknown | | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1853 | 2023 | 4 | Texas | Person-to-person | | | | School/college/university | 163 | 1 | 160 | 0 | 160 | | | | | | |
| 1854 | 2023 | 4 | Kentucky | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 untypeable;GII.P16 GII.4 Sydney | Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 40 | 0 | 40 | 0 | 40 | | | | | | |
| 1855 | 2023 | 4 | Alabama | Person-to-person | Norovirus | | Suspected | School/college/university | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 1856 | 2023 | 4 | Utah | Person-to-person | | | | Child daycare/preschool | 49 | 0 | 0 | 0 | 0 | | | | | | |
| 1857 | 2023 | 4 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 26 | | 0 | | 0 | | | | | | |
| 1858 | 2023 | 4 | Minnesota | Food | Salmonella enterica | Enteritidis | Confirmed | Residence - Single-family home | 2 | 2 | 2 | 0 | 2 | tuna cake | egg | Eggs | | | |
| 1859 | 2023 | 4 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 5 | | 0 | | 0 | | | | | | |
| 1860 | 2023 | 4 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 37 | 0 | 37 | 0 | 7 | | | | | | |
| 1861 | 2023 | 4 | Virginia | Indeterminate/unknown | Norovirus unknown | | Suspected | School/college/university | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1862 | 2023 | 4 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 72 | 0 | 72 | 0 | 72 | | | | | | |
| 1863 | 2023 | 4 | Alabama | Indeterminate/unknown | Norovirus | | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1864 | 2023 | 4 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 9 | | 0 | | 0 | | | | | | |
| 1865 | 2023 | 4 | Ohio | Person-to-person | Rotavirus | | Confirmed | Child daycare/preschool | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1866 | 2023 | 4 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 1 | 14 | 0 | 14 | | | | | | |
| 1867 | 2023 | 4 | Massachusetts | Indeterminate/unknown | Norovirus unknown | | Suspected | Restaurant | 16 | 0 | 0 | 0 | 0 | | | | | | |
| 1868 | 2023 | 4 | Tennessee | Person-to-person | Shigella unknown | | Confirmed | Residence - Single-family home | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1869 | 2023 | 4 | Kentucky | Person-to-person | | | | Restaurant | 3 | 0 | 0 | 0 | 0 | | | | | | |
| 1870 | 2023 | 4 | Texas | Food | Escherichia coli, Shiga toxin-producing | unknown | Confirmed | Residence - Single-family home | 3 | 0 | 3 | 0 | 3 | ground beef | | Beef | | | |
| 1871 | 2023 | 4 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 12 | 0 | 0 | 0 | 0 | | | | | | |
| 1872 | 2023 | 4 | Louisiana | Indeterminate/unknown | Cryptosporidium unknown | | Confirmed | Veterinary clinic | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1873 | 2023 | 4 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 36 | 2 | 36 | 0 | 36 | | | | | | |
| 1874 | 2023 | 4 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 1875 | 2023 | 4 | Vermont | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1876 | 2023 | 4 | Minnesota | Person-to-person | | | | Child daycare/preschool | 35 | | 0 | 0 | 35 | | | | | | |
| 1877 | 2023 | 4 | Vermont | Person-to-person | Norovirus Genogroup I;Norovirus Genogroup I | GI.P4 GI.4;unknown | Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 57 | 2 | 57 | 0 | 57 | | | | | | |
| 1878 | 2023 | 4 | Montana | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1879 | 2023 | 4 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1880 | 2023 | 4 | Nevada | Person-to-person | | | | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1881 | 2023 | 4 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 1882 | 2023 | 4 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 1 | 20 | 0 | 20 | | | | | | |
| 1883 | 2023 | 4 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1884 | 2023 | 4 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 58 | 0 | 58 | 0 | 58 | | | | | | |
| 1885 | 2023 | 4 | Colorado | Food | | | | Restaurant: Fast-food (drive up service or pay at counter) | 7 | 1 | 7 | 0 | 7 | | | | | | |
| 1886 | 2023 | 4 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 92 | 1 | 60 | 0 | 60 | | | | | | |
| 1887 | 2023 | 4 | Connecticut | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 14 | 2 | 13 | 0 | 13 | | | | | | |
| 1888 | 2023 | 4 | Kentucky | Person-to-person | Norovirus Genogroup I | GI.P13 GI.3 | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 1889 | 2023 | 4 | Oregon | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 40 | 2 | 40 | 0 | 40 | | | | | | |
| 1890 | 2023 | 4 | Oregon | Food | Escherichia coli, Shiga toxin-producing | O157 | Confirmed | Residence - Single-family home | 13 | 0 | 13 | 0 | 13 | potato salad;Smoked brisket | | Multiple | | | |
| 1891 | 2023 | 4 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1892 | 2023 | 4 | Oregon | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | unknown;GII.P16 GII.4 Sydney | Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 1893 | 2023 | 4 | Oregon | Person-to-person | | | | School/college/university | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 1894 | 2023 | 4 | North Carolina | Person-to-person | Norovirus unknown | | Confirmed | Hospital | 15 | 1 | 6 | 0 | 6 | | | | | | |
| 1895 | 2023 | 4 | Indiana | Indeterminate/unknown | | | | Event space | 8 | 0 | 0 | 0 | 8 | | | | | | |
| 1896 | 2023 | 4 | Texas | Person-to-person | | | | Child daycare/preschool | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 1897 | 2023 | 4 | Pennsylvania | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 54 | 1 | 54 | 0 | 54 | | | | | | |
| 1898 | 2023 | 4 | Wyoming | Animal contact | Cryptosporidium unknown | | Confirmed | Farm/dairy/agricultural setting | 9 | 0 | 9 | 0 | 9 | | | | | | Cattle |
| 1899 | 2023 | 4 | Pennsylvania | Person-to-person | Campylobacter jejuni | | Confirmed | Residence - Single-family home | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1900 | 2023 | 4 | Texas | Food | Salmonella enterica;Salmonella enterica | Typhimurium;Typhimurium | Confirmed;Confirmed | Caterer | 5 | 0 | 4 | 0 | 4 | | | | | | |
| 1901 | 2023 | 4 | Maryland | Food | | | | Event space;Caterer | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1902 | 2023 | 4 | Pennsylvania | Food | Salmonella enterica | Enteritidis | Confirmed | Restaurant: Other | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 1903 | 2023 | 4 | Alabama | Indeterminate/unknown | Cyclospora cayetanensis | | Suspected | Office/indoor workplace | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1904 | 2023 | 4 | Ohio | Animal contact | Campylobacter unknown | | Confirmed | Farm/dairy/agricultural setting | 3 | 0 | 2 | 0 | 2 | | | | | | Cattle |
| 1905 | 2023 | 4 | Nevada | Indeterminate/unknown | | | | Residence - Multi-unit housing | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 1906 | 2023 | 4 | Florida | Food | Clostridium perfringens | | Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1907 | 2023 | 4 | Florida | Water | Cryptosporidium unknown | | Confirmed | Other | 10 | 0 | 10 | 0 | 10 | | | | Recreational water -- treated | Pool - Other Swimming Pool | |
| 1908 | 2023 | 4 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 63 | 3 | 41 | 0 | 41 | | | | | | |
| 1909 | 2023 | 4 | Oregon | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1910 | 2023 | 4 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 72 | 4 | 72 | 0 | 72 | | | | | | |
| 1911 | 2023 | 4 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 1912 | 2023 | 4 | Kentucky | Indeterminate/unknown | Norovirus Genogroup II | GII.P untypeable GII.4 New Orleans | Confirmed | Hotel/motel | 48 | 1 | 48 | 0 | 48 | | | | | | |
| 1913 | 2023 | 4 | Michigan | Animal contact | Cryptosporidium parvum | other | Confirmed | Petting zoo | 36 | 1 | 34 | 0 | 36 | | | | | | Donkey;Goat;Sheep |
| 1914 | 2023 | 4 | Colorado | Indeterminate/unknown | | | | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1915 | 2023 | 4 | Maryland | Food | | | | Restaurant: Sit-down dining | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1916 | 2023 | 4 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 41 | 0 | 18 | 0 | 18 | | | | | | |
| 1917 | 2023 | 4 | Kentucky | Food | Norovirus unknown | | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 1918 | 2023 | 4 | Nevada | Person-to-person | | | | School/college/university | 65 | 0 | 65 | 0 | 65 | | | | | | |
| 1919 | 2023 | 4 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 62 | 3 | 62 | 0 | 62 | | | | | | |
| 1920 | 2023 | 4 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 30 | 4 | 30 | 0 | 30 | | | | | | |
| 1921 | 2023 | 4 | Kentucky | Person-to-person | Norovirus unknown;Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed;Confirmed | Hospital | 10 | 4 | 10 | 0 | 10 | | | | | | |
| 1922 | 2023 | 4 | Maryland | Indeterminate/unknown | | | | Restaurant | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 1923 | 2023 | 4 | West Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 1 | 30 | 0 | 30 | | | | | | |
| 1924 | 2023 | 4 | Hawaii | Food | | | | Hotel/motel | 12 | 0 | 0 | 0 | 0 | | | | | | |
| 1925 | 2023 | 4 | Multistate | Food | Salmonella enterica | Enteritidis | Confirmed | | 13 | 3 | 12 | 0 | 12 | | | | | | |
| 1926 | 2023 | 4 | Florida | Food | Ciguatoxin | | Confirmed | Residence - Single-family home;Residence - Multi-unit housing | 2 | 0 | 2 | 0 | 2 | Snapper | | Fish | | | |
| 1927 | 2023 | 4 | West Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 38 | 1 | 38 | 0 | 38 | | | | | | |
| 1928 | 2023 | 4 | West Virginia | Person-to-person | | | | Other healthcare facility | 17 | | 0 | | 0 | | | | | | |
| 1929 | 2023 | 4 | West Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | | 0 | | 0 | | | | | | |
| 1930 | 2023 | 4 | Colorado | Indeterminate/unknown | | | | Other | 30 | 0 | 0 | 0 | 0 | | | | | | |
| 1931 | 2023 | 4 | Nevada | Person-to-person | | | | Event space | 51 | 0 | 51 | 0 | 51 | | | | | | |
| 1932 | 2023 | 4 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 1933 | 2023 | 4 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 6 | 0 | 0 | 0 | 0 | | | | | | |
| 1934 | 2023 | 4 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1935 | 2023 | 4 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1936 | 2023 | 4 | Illinois | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | unknown | Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 56 | 0 | 0 | 0 | 0 | | | | | | |
| 1937 | 2023 | 4 | Illinois | Person-to-person | Rotavirus | | Confirmed | Long-term care/nursing home/assisted living facility | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 1938 | 2023 | 4 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 1939 | 2023 | 4 | Illinois | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 14 | 2 | 2 | 0 | 0 | | | | | | |
| 1940 | 2023 | 4 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 4 | 4 | 0 | 0 | | | | | | |
| 1941 | 2023 | 4 | Rhode Island | Food | Norovirus Genogroup II | unknown | Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1942 | 2023 | 4 | Idaho | Indeterminate/unknown | Campylobacter unknown | | Suspected | Residence - Single-family home | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1943 | 2023 | 4 | Arizona | Person-to-person | Norovirus unknown | | Suspected | Ship/boat | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 1944 | 2023 | 4 | Arizona | Person-to-person | Norovirus unknown;Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed;Confirmed | Long-term care/nursing home/assisted living facility | 12 | 1 | 12 | 0 | 12 | | | | | | |
| 1945 | 2023 | 4 | Arizona | Person-to-person | | | | School/college/university | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 1946 | 2023 | 4 | Arizona | Person-to-person | Norovirus unknown;Norovirus Genogroup II;Norovirus Genogroup II | GII.P16 GII.4 untypeable;unknown | Confirmed;Confirmed;Suspected | Other healthcare facility | 54 | 0 | 43 | 0 | 43 | | | | | | |
| 1947 | 2023 | 4 | Arizona | Person-to-person | | | | Child daycare/preschool | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 1948 | 2023 | 4 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 1949 | 2023 | 4 | Arizona | Person-to-person | | | | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 1950 | 2023 | 4 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 1951 | 2023 | 4 | Colorado | Food | | | | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1952 | 2023 | 4 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 1953 | 2023 | 4 | Pennsylvania | Indeterminate/unknown | Cryptosporidium unknown | | Suspected | Residence - Single-family home | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 1954 | 2023 | 4 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 1955 | 2023 | 4 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Other | 19 | 0 | 0 | 0 | 0 | | | | | | |
| 1956 | 2023 | 4 | Illinois | Person-to-person | Rotavirus | | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 9 | 28 | 0 | 28 | | | | | | |
| 1957 | 2023 | 4 | Florida | Food | Campylobacter jejuni | | Confirmed | Residence - Single-family home | 7 | 1 | 7 | 0 | 7 | Raw Milk | | Dairy | | | |
| 1958 | 2023 | 4 | New Hampshire | Person-to-person | Cryptosporidium unknown | | Suspected | Child daycare/preschool | 11 | | 0 | | 0 | | | | | | |
| 1959 | 2023 | 4 | New Hampshire | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | | 0 | | | | | | |
| 1960 | 2023 | 4 | Multistate | Food | Salmonella enterica | Typhimurium | Confirmed | Residence - Single-family home;Unknown | 44 | 16 | 39 | 0 | 34 | ground beef | ground beef | Beef | | | |
| 1961 | 2023 | 4 | Multistate | Food | Escherichia coli, Shiga toxin-producing | O157:H7 | Confirmed | | 16 | 4 | 13 | 0 | 16 | | | | | | |
| 1962 | 2023 | 4 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 10 | 0 | 0 | 0 | 0 | | | | | | |
| 1963 | 2023 | 4 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 1964 | 2023 | 4 | Multistate | Food | Salmonella enterica | Newport | Confirmed | Unknown | 13 | 1 | 11 | 0 | 10 | | | | | | |
| 1965 | 2023 | 4 | Nevada | Person-to-person | | | | Unknown | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 1966 | 2023 | 4 | Wisconsin | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 40 | 1 | 40 | 0 | 40 | | | | | | |
| 1967 | 2023 | 4 | Michigan | Food | Clostridium perfringens | | Suspected | Restaurant: Other | 3 | 0 | 3 | 0 | 3 | refried beans | | Multiple | | | |
| 1968 | 2023 | 4 | Nevada | Indeterminate/unknown | | | | School/college/university | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 1969 | 2023 | 4 | Michigan | Animal contact | Cryptosporidium | | Confirmed | Farm/dairy/agricultural setting | 13 | 1 | 13 | 0 | 13 | | | | | | Cattle |
| 1970 | 2023 | 4 | Multistate | Food | Salmonella enterica | Paratyphi B var. L(+) tartrate + | Confirmed | Unknown | 37 | 10 | 31 | 0 | 31 | fresh pico de gallo | | N/A | | | |
| 1971 | 2023 | 4 | Multistate | Food | Campylobacter jejuni | | Confirmed | Unknown | 13 | 7 | 8 | 0 | 8 | chicken | | Chicken | | | |
| 1972 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | | | | | | | | | |
| 1973 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Confirmed | Long-term care/nursing home/assisted living facility | 2 | 1 | | | | | | | | | |
| 1974 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 40 | 0 | | | | | | | | | |
| 1975 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 9 | | | | | | | | | | |
| 1976 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 72 | 0 | | | | | | | | | |
| 1977 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | | | | | | | | | |
| 1978 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 1 | | | | | | | | | |
| 1979 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 2 | | | | | | | | | |
| 1980 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 11 | | | | | | | | | | |
| 1981 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 15 | | | | | | | | | | |
| 1982 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 0 | | | | | | | | | |
| 1983 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | | | | | | | | | |
| 1984 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 9 | | | | | | | | | | |
| 1985 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 2 | | | | | | | | | |
| 1986 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 8 | | | | | | | | | | |
| 1987 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 0 | | | | | | | | | |
| 1988 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Confirmed | Hospital | 3 | | | | | | | | | | |
| 1989 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 22 | 0 | | | | | | | | | |
| 1990 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 1 | | | | | | | | | |
| 1991 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 2 | | | | | | | | | |
| 1992 | 2023 | 4 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 1993 | 2023 | 4 | Multistate | Food | Salmonella enterica | Saintpaul | Confirmed | Residence - Single-family home | 18 | 17 | 17 | 0 | 17 | ground beef | beef | Beef | | | |
| 1994 | 2023 | 4 | Multistate | Food | Salmonella enterica | Braenderup | Confirmed | Unknown | 26 | 9 | 21 | 0 | 22 | | | | | | |
| 1995 | 2023 | 4 | Nevada | Indeterminate/unknown | | | | Child daycare/preschool | 34 | 0 | 34 | 0 | 34 | | | | | | |
| 1996 | 2023 | 4 | Arizona | Person-to-person | | | | Child daycare/preschool | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 1997 | 2023 | 4 | Arizona | Person-to-person | | | | Child daycare/preschool | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 1998 | 2023 | 4 | Arizona | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Confirmed | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 1999 | 2023 | 4 | Arizona | Water | Giardia unknown | | Confirmed | Shelter/group home/transitional housing | 5 | 0 | 5 | 0 | 5 | | | | Recreational water -- treated | Pool - Kiddie/Wading, Temporary | |
| 2000 | 2023 | 4 | Wisconsin | Food | Clostridium perfringens | | Suspected | Restaurant: Other | 17 | 0 | 17 | 0 | 17 | potato, baked;Beef, prime rib | | Multiple | | | |
| 2001 | 2023 | 4 | Multistate | Food | Salmonella enterica | Blockley | Confirmed | Unknown | 21 | 4 | 17 | 0 | 18 | | | | | | |
| 2002 | 2023 | 4 | Georgia | Person-to-person | Salmonella enterica | Mississippi | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2003 | 2023 | 4 | North Dakota | Food | Norovirus unknown | | Suspected | School/college/university | 41 | 0 | 41 | 0 | 41 | Breakfast Pizza | | Multiple | | | |
| 2004 | 2023 | 4 | North Dakota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 22 | 4 | 22 | | 0 | | | | | | |
| 2005 | 2023 | 4 | Illinois | Food | Bacillus cereus;Clostridium perfringens | | Suspected;Suspected | Caterer | 57 | 0 | 57 | 0 | 0 | Pulled Pork | | Pork | | | |
| 2006 | 2023 | 4 | Illinois | Water | Legionella pneumophila | serogroup 2-14 | Confirmed | Fee-based facility/membership club | 2 | 2 | 2 | 0 | 2 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 2007 | 2023 | 4 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 1 | 1 | | 0 | | | | | | |
| 2008 | 2023 | 4 | South Carolina | Water | Legionella unknown | | Suspected | Other healthcare facility | 13 | 1 | 13 | 0 | 13 | | | | Undetermined water | | |
| 2009 | 2023 | 4 | Illinois | Animal contact | Cryptosporidium | | Suspected | Zoo or animal exhibit | 6 | 1 | 5 | 0 | 6 | | | | | | |
| 2010 | 2023 | 4 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2011 | 2023 | 4 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 2012 | 2023 | 4 | Multistate | Animal contact | Salmonella enterica | Typhimurium | Confirmed | Residence - Single-family home;Residence - Multi-unit housing | 80 | 14 | 61 | 0 | 66 | | | | | | Poultry |
| 2013 | 2023 | 4 | Florida | Water | Legionella pneumophila | serogroup 1 | Confirmed | Fee-based facility/membership club | 2 | 2 | 2 | 0 | 2 | | | | Drinking water;Recreational water -- treated | Community;Hot Tub/Spa/Whirlpool | |
| 2014 | 2023 | 4 | Multistate | Animal contact | Salmonella enterica | Typhimurium | Confirmed | Residence - Single-family home;Residence - Multi-unit housing | 25 | 7 | 21 | 0 | 22 | | | | | | Poultry |
| 2015 | 2023 | 4 | Arizona | Food | Salmonella enterica | Braenderup | Confirmed | | 4 | 1 | 4 | 0 | 4 | | | | | | |
| 2016 | 2023 | 4 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 2017 | 2023 | 4 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 2018 | 2023 | 4 | Rhode Island | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 1 | 15 | | | | | | |
| 2019 | 2023 | 4 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 23 | 5 | 23 | 0 | 23 | | | | | | |
| 2020 | 2023 | 4 | Massachusetts | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 2 | 2 | 0 | 0 | | | | | | |
| 2021 | 2023 | 4 | Kansas | Indeterminate/unknown | | | | Hospital | 5 | | 0 | 0 | 5 | | | | | | |
| 2022 | 2023 | 4 | Multistate | Food | Cyclospora cayetanensis | | Confirmed | Restaurant: Sit-down dining | 42 | 0 | 42 | 0 | 42 | broccoli | | Vegetable Row Crops | | | |
| 2023 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown;Norovirus Genogroup II | | Suspected;Suspected | Hospital | 12 | 1 | 12 | 0 | 12 | | | | | | |
| 2024 | 2023 | 4 | Nevada | Person-to-person | | | | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2025 | 2023 | 4 | Nevada | Person-to-person | | | | Unknown | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 2026 | 2023 | 4 | Rhode Island | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 2027 | 2023 | 4 | Montana | Person-to-person | | | | Shelter/group home/transitional housing | 28 | 0 | 0 | 0 | 0 | | | | | | |
| 2028 | 2023 | 4 | Montana | Person-to-person | | | | Child daycare/preschool | 28 | 0 | 0 | 0 | 0 | | | | | | |
| 2029 | 2023 | 4 | Montana | Person-to-person | | | | Child daycare/preschool | 15 | 0 | 0 | 0 | 0 | | | | | | |
| 2030 | 2023 | 4 | Georgia | Food | Norovirus unknown | | Suspected | Restaurant: Buffet | 29 | 0 | 29 | 0 | 29 | caesar salad | | Multiple | | | |
| 2031 | 2023 | 4 | Montana | Person-to-person | | | | Child daycare/preschool | 11 | 0 | 0 | 0 | 0 | | | | | | |
| 2032 | 2023 | 4 | Montana | Person-to-person | | | | Child daycare/preschool | 14 | 0 | 0 | 0 | 0 | | | | | | |
| 2033 | 2023 | 4 | Michigan | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 2 | 1 | 1 | 0 | 2 | | | | Drinking water;Recreational water -- treated | Community;Hot Tub/Spa/Whirlpool;Pool - Other Swimming Pool | |
| 2034 | 2023 | 4 | Iowa | Person-to-person | Norovirus Genogroup II | GII.P16 GII.10 | Confirmed | School/college/university | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 2035 | 2023 | 4 | Iowa | Indeterminate/unknown | | | | Event space | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2036 | 2023 | 4 | Iowa | Person-to-person | Norovirus Genogroup I;Norovirus Genogroup II | unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 64 | 1 | 11 | 0 | 0 | | | | | | |
| 2037 | 2023 | 4 | Iowa | Indeterminate/unknown | | | | Restaurant | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2038 | 2023 | 4 | Iowa | Indeterminate/unknown | | | | Restaurant | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2039 | 2023 | 4 | Iowa | Indeterminate/unknown | | | | Restaurant | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2040 | 2023 | 4 | Iowa | Person-to-person | Norovirus unknown;Norovirus Genogroup II | unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 25 | 3 | 25 | 0 | 25 | | | | | | |
| 2041 | 2023 | 4 | Georgia | Food | Salmonella enterica | Muenchen | Suspected | Restaurant: Sit-down dining | 5 | 1 | 5 | 0 | 5 | crab claw;fried fish | | Multiple | | | |
| 2042 | 2023 | 4 | Montana | Indeterminate/unknown | | | | Restaurant | 13 | 0 | 0 | 0 | 0 | | | | | | |
| 2043 | 2023 | 4 | Georgia | Water | Legionella unknown | | Confirmed | Hospital | 2 | 2 | 2 | 1 | 2 | | | | Undetermined water | | |
| 2044 | 2023 | 4 | Idaho | Indeterminate/unknown | Norovirus Genogroup II | unknown | Confirmed | Restaurant | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2045 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 1 | | | | | | | | | |
| 2046 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 2 | | | | | | | | | | |
| 2047 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | | | | | | | | | |
| 2048 | 2023 | 4 | Delaware | Person-to-person | | | | | 15 | | | | | | | | | | |
| 2049 | 2023 | 4 | Washington | Food | Norovirus | | Suspected | Office/indoor workplace | 70 | 0 | 64 | 0 | 62 | | | | | | |
| 2050 | 2023 | 4 | Washington | Food | Norovirus | | Suspected | Restaurant: Sit-down dining | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2051 | 2023 | 4 | Arizona | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 3 | 0 | 3 | 0 | 3 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 2052 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 65 | 0 | 65 | 0 | 65 | | | | | | |
| 2053 | 2023 | 4 | Colorado | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 6 | 4 | 6 | 1 | 6 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 2054 | 2023 | 4 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 40 | 0 | 40 | 0 | 40 | | | | | | |
| 2055 | 2023 | 4 | Louisiana | Water | Legionella pneumophila | serogroup 1 | Confirmed | Other | 4 | 2 | 4 | 0 | 4 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 2056 | 2023 | 4 | Oregon | Person-to-person | Norovirus unknown | | Confirmed | Child daycare/preschool | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 2057 | 2023 | 4 | Colorado | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 2 | 28 | | | | | | |
| 2058 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 54 | 0 | 54 | 0 | 54 | | | | | | |
| 2059 | 2023 | 4 | Colorado | Person-to-person | Norovirus | | Suspected | School/college/university | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 2060 | 2023 | 4 | Illinois | Food | Norovirus Genogroup II | unknown | Suspected | | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 2061 | 2023 | 4 | Illinois | Food | Clostridium perfringens;Bacillus cereus | | Suspected;Suspected | | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2062 | 2023 | 4 | Nevada | Person-to-person | | | | Child daycare/preschool | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 2063 | 2023 | 4 | Pennsylvania | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 12 | 4 | 12 | 0 | 12 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 2064 | 2023 | 4 | Tennessee | Water | Legionella pneumophila | serogroup 1 | Confirmed | Religious facility | 16 | 7 | 16 | 0 | 16 | | | | Drinking water | Community | |
| 2065 | 2023 | 4 | Connecticut | Person-to-person | Shigella flexneri | unknown | Confirmed | Child daycare/preschool | 7 | 2 | 4 | | 0 | | | | | | |
| 2066 | 2023 | 4 | Vermont | Water | Cryptosporidium unknown | | Confirmed | Unknown | 2 | 0 | 2 | 0 | 2 | | | | Recreational water -- untreated | Lake/Reservoir;River/Stream | |
| 2067 | 2023 | 4 | Colorado | Person-to-person | | | | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2068 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Correctional/detention facility | 37 | 1 | 37 | 0 | 37 | | | | | | |
| 2069 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 20 | 0 | 0 | 0 | 0 | | | | | | |
| 2070 | 2023 | 4 | Colorado | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 0 | 0 | 0 | | | | | | |
| 2071 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 2072 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 39 | 0 | 0 | 0 | 0 | | | | | | |
| 2073 | 2023 | 4 | Colorado | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2074 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Other healthcare facility | 53 | 2 | 53 | 0 | 53 | | | | | | |
| 2075 | 2023 | 4 | Colorado | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 54 | 0 | 0 | 0 | 0 | | | | | | |
| 2076 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 2077 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 2078 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 2079 | 2023 | 4 | Colorado | Person-to-person | | | | School/college/university | 10 | 0 | 0 | 0 | 10 | | | | | | |
| 2080 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 79 | 0 | 79 | 0 | 79 | | | | | | |
| 2081 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Hospital | 16 | 6 | 16 | 0 | 16 | | | | | | |
| 2082 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 2083 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 37 | 0 | 37 | 0 | 37 | | | | | | |
| 2084 | 2023 | 4 | Colorado | Person-to-person | | | | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2085 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 30 | 1 | 30 | 0 | 30 | | | | | | |
| 2086 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 2087 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 56 | 0 | 56 | 0 | 56 | | | | | | |
| 2088 | 2023 | 4 | Colorado | Person-to-person | | | | Child daycare/preschool | 48 | 0 | 48 | 0 | 48 | | | | | | |
| 2089 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 42 | 2 | 42 | 0 | 42 | | | | | | |
| 2090 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 2091 | 2023 | 4 | Colorado | Person-to-person | Norovirus | | Suspected | School/college/university | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2092 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2093 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 2094 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 42 | 0 | 0 | 0 | 42 | | | | | | |
| 2095 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Shelter/group home/transitional housing | 2 | 2 | 2 | 0 | 2 | | | | | | |
| 2096 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 56 | 0 | 0 | 0 | 56 | | | | | | |
| 2097 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2098 | 2023 | 4 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 0 | 0 | 0 | | | | | | |
| 2099 | 2023 | 4 | Washington | Indeterminate/unknown | Shigella flexneri | | Confirmed | Shelter/group home/transitional housing | 3 | 3 | 3 | 0 | 3 | | | | | | |
| 2100 | 2023 | 4 | Maine | Person-to-person | | | | School/college/university | 61 | | 0 | | 0 | | | | | | |
| 2101 | 2023 | 4 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 59 | 1 | 59 | 0 | 59 | | | | | | |
| 2102 | 2023 | 4 | Maine | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 2103 | 2023 | 4 | Maine | Person-to-person | | | | School/college/university | 7 | | 0 | | 0 | | | | | | |
| 2104 | 2023 | 4 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Hospital | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 2105 | 2023 | 4 | Maine | Indeterminate/unknown | Norovirus Genogroup II | unknown | Suspected | Hospital | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2106 | 2023 | 4 | Maine | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 42 | 0 | 42 | 0 | 42 | | | | | | |
| 2107 | 2023 | 4 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 2108 | 2023 | 4 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 58 | 0 | 58 | 0 | 58 | | | | | | |
| 2109 | 2023 | 4 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 41 | 0 | 41 | 0 | 41 | | | | | | |
| 2110 | 2023 | 4 | Maine | Person-to-person | | | | Shelter/group home/transitional housing | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 2111 | 2023 | 4 | Maine | Person-to-person | | | | School/college/university | 19 | 0 | 19 | | 0 | | | | | | |
| 2112 | 2023 | 4 | Maine | Person-to-person | | | | School/college/university | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 2113 | 2023 | 4 | Maine | Person-to-person | | | | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2114 | 2023 | 4 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 2115 | 2023 | 4 | Maine | Food | Bacillus cereus | | Confirmed | Restaurant: Sit-down dining | 5 | 0 | 4 | 0 | 4 | Fried chicken fingers;pork fried rice;beef teriyaki;chicken teriyaki;White Rice | | Multiple | | | |
| 2116 | 2023 | 4 | California | Food | Norovirus unknown | | Suspected | Caterer | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 2117 | 2023 | 4 | California | Food | Norovirus unknown | | Suspected | Caterer | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 2118 | 2023 | 4 | California | Food | | | | Restaurant: Sit-down dining | 5 | 0 | 3 | 0 | 3 | salsa;chips | | Multiple | | | |
| 2119 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | | 2 | 0 | | | | | | | | | |
| 2120 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | | 5 | 0 | | | | | | | | | |
| 2121 | 2023 | 4 | Washington | Person-to-person | Norovirus | | Suspected | | 4 | 1 | | | | | | | | | |
| 2122 | 2023 | 5 | Ohio | Food | | | | Restaurant: Fast-food (drive up service or pay at counter) | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2123 | 2023 | 5 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2124 | 2023 | 5 | Ohio | Food | Norovirus unknown | | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2125 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2126 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus | | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 2127 | 2023 | 5 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 2128 | 2023 | 5 | Minnesota | Indeterminate/unknown | Norovirus unknown | | Suspected | School/college/university | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 2129 | 2023 | 5 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | | 0 | | 0 | | | | | | |
| 2130 | 2023 | 5 | Ohio | Water | Norovirus unknown | | Suspected | Hotel/motel | 3 | | 0 | | 0 | | | | Recreational water -- treated | Pool - Other Swimming Pool | |
| 2131 | 2023 | 5 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 40 | 4 | 40 | 0 | 40 | | | | | | |
| 2132 | 2023 | 5 | Ohio | Person-to-person | Norovirus | | Suspected | School/college/university | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 2133 | 2023 | 5 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | | 0 | | 0 | | | | | | |
| 2134 | 2023 | 5 | Ohio | Person-to-person | Norovirus Genogroup II;Norovirus unknown | GII.P17 | Suspected;Confirmed | Long-term care/nursing home/assisted living facility | 19 | 0 | 18 | 0 | 18 | | | | | | |
| 2135 | 2023 | 5 | Nebraska | Food | Scombroid toxin | | Confirmed | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | yellowfin tuna | | Fish | | | |
| 2136 | 2023 | 5 | Alabama | Person-to-person | Norovirus Genogroup II;Clostridium difficile | unknown | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 0 | 0 | 0 | | | | | | |
| 2137 | 2023 | 5 | Virginia | Person-to-person | Clostridium difficile;Rotavirus | | Suspected;Suspected | School/college/university | 71 | 0 | 71 | 0 | 71 | | | | | | |
| 2138 | 2023 | 5 | Virginia | Food | Bacillus cereus | | Confirmed | Restaurant: Sit-down dining | 12 | 0 | 12 | 0 | 12 | Fried Rice | | Multiple | | | |
| 2139 | 2023 | 5 | Virginia | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 2140 | 2023 | 5 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2141 | 2023 | 5 | Ohio | Food | Clostridium perfringens | | Suspected | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2142 | 2023 | 5 | North Carolina | Person-to-person | Norovirus unknown | | Confirmed | Child daycare/preschool | 8 | 1 | 8 | 0 | 8 | | | | | | |
| 2143 | 2023 | 5 | Alabama | Indeterminate/unknown | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 2144 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 0 | 0 | 0 | | | | | | |
| 2145 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 1 | 3 | 0 | 3 | | | | | | |
| 2146 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 0 | 0 | 0 | | | | | | |
| 2147 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P17 GII.17 | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 2148 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 2149 | 2023 | 5 | Wisconsin | Food | | | | | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2150 | 2023 | 5 | Utah | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Hospital | 12 | 1 | 12 | 0 | 12 | | | | | | |
| 2151 | 2023 | 5 | Ohio | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 2152 | 2023 | 5 | Utah | Person-to-person | Norovirus Genogroup I | GI.P11 GI.6 | Confirmed | School/college/university | 100 | 0 | 0 | 0 | 0 | | | | | | |
| 2153 | 2023 | 5 | Mississippi | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2154 | 2023 | 5 | Michigan | Person-to-person | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | Long-term care/nursing home/assisted living facility | 28 | 1 | 28 | 0 | 28 | | | | | | |
| 2155 | 2023 | 5 | Utah | Indeterminate/unknown | | | | Restaurant | 7 | 0 | 5 | 0 | 5 | | | | | | |
| 2156 | 2023 | 5 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 1 | 19 | 0 | 19 | | | | | | |
| 2157 | 2023 | 5 | Michigan | Indeterminate/unknown | Norovirus Genogroup II | GII.P6 GII.7 | Confirmed | Unknown | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2158 | 2023 | 5 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 13 | 0 | 10 | 0 | 10 | | | | | | |
| 2159 | 2023 | 5 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 149 | 0 | 149 | 0 | 149 | | | | | | |
| 2160 | 2023 | 5 | Michigan | Indeterminate/unknown | Norovirus Genogroup II | GII.P17 GII.17 | Confirmed | Event space | 45 | 0 | 45 | 0 | 45 | | | | | | |
| 2161 | 2023 | 5 | Wisconsin | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 39 | 0 | 39 | 0 | 39 | | | | | | |
| 2162 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 2163 | 2023 | 5 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 54 | 0 | 54 | 0 | 54 | | | | | | |
| 2164 | 2023 | 5 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Shelter/group home/transitional housing | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2165 | 2023 | 5 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2166 | 2023 | 5 | Virginia | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 3 | 10 | 0 | 10 | | | | | | |
| 2167 | 2023 | 5 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2168 | 2023 | 5 | Minnesota | Indeterminate/unknown | Norovirus | | Suspected | Restaurant | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2169 | 2023 | 5 | Montana | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 45 | 0 | 45 | 0 | 45 | | | | | | |
| 2170 | 2023 | 5 | Alabama | Person-to-person | Norovirus Genogroup I | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2171 | 2023 | 5 | Wyoming | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2172 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 2 | 6 | 0 | 0 | | | | | | |
| 2173 | 2023 | 5 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | | 0 | | 0 | | | | | | |
| 2174 | 2023 | 5 | Alabama | Indeterminate/unknown | Norovirus unknown | | Suspected | School/college/university | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 2175 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2176 | 2023 | 5 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 47 | 0 | 47 | 0 | 47 | | | | | | |
| 2177 | 2023 | 5 | Oregon | Person-to-person | | | | School/college/university | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2178 | 2023 | 5 | Oregon | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 19 | 2 | 19 | 0 | 19 | | | | | | |
| 2179 | 2023 | 5 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 2180 | 2023 | 5 | Oregon | Person-to-person | | | | Residence - Single-family home | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 2181 | 2023 | 5 | Oregon | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | 1 | 12 | 0 | 12 | | | | | | |
| 2182 | 2023 | 5 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2183 | 2023 | 5 | Oregon | Person-to-person | | | | School/college/university | 28 | 0 | 28 | 0 | 28 | | | | | | |
| 2184 | 2023 | 5 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | | 0 | | 0 | | | | | | |
| 2185 | 2023 | 5 | Utah | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2186 | 2023 | 5 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2187 | 2023 | 5 | Pennsylvania | Environmental contamination other than food/water | Salmonella enterica | Enteritidis | Confirmed | Residence - Single-family home | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2188 | 2023 | 5 | Minnesota | Food | Vibrio;Norovirus unknown | | Suspected;Suspected | Restaurant: Sit-down dining | 5 | 0 | 5 | 0 | 5 | Oyster | | Mollusks | | | |
| 2189 | 2023 | 5 | Multistate | Animal contact | Campylobacter unknown | | Confirmed | Residence - Single-family home | 4 | 1 | 1 | 0 | 0 | | | | | | |
| 2190 | 2023 | 5 | Montana | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 Sydney | Confirmed | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 2191 | 2023 | 5 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 2192 | 2023 | 5 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Other healthcare facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 2193 | 2023 | 5 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 2194 | 2023 | 5 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 57 | 4 | 57 | 1 | 57 | | | | | | |
| 2195 | 2023 | 5 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 2196 | 2023 | 5 | South Carolina | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 31 | 0 | 31 | 0 | 31 | | | | | | |
| 2197 | 2023 | 5 | South Carolina | Food | Norovirus unknown | | Suspected | | 16 | 1 | 5 | 0 | 5 | | | | | | |
| 2198 | 2023 | 5 | Utah | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 20 | 0 | 20 | 0 | 20 | | | | | | |
| 2199 | 2023 | 5 | New York | Indeterminate/unknown | Campylobacter | | Suspected | Farm/dairy/agricultural setting | 3 | | 0 | | 0 | | | | | | |
| 2200 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 20 | 0 | 0 | 0 | 0 | | | | | | |
| 2201 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 0 | 0 | 0 | | | | | | |
| 2202 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 82 | 0 | 0 | 0 | 0 | | | | | | |
| 2203 | 2023 | 5 | Minnesota | Person-to-person | Norovirus unknown;Clostridium difficile | | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 39 | 0 | 39 | 0 | 39 | | | | | | |
| 2204 | 2023 | 5 | Tennessee | Indeterminate/unknown | Sapovirus unknown | | Suspected | Other healthcare facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 2205 | 2023 | 5 | Tennessee | Indeterminate/unknown | Norovirus unknown | | Suspected | Restaurant | 13 | 0 | 6 | 0 | 6 | | | | | | |
| 2206 | 2023 | 5 | Ohio | Person-to-person | | | | Unknown | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2207 | 2023 | 5 | Montana | Food | Norovirus Genogroup I | GI.P2 GI.2 | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 186 | 0 | 186 | 0 | 186 | Sandwich | | Multiple | | | |
| 2208 | 2023 | 5 | Louisiana | Person-to-person | Norovirus unknown;Giardia unknown | | Confirmed;Suspected | Other | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 2209 | 2023 | 5 | Minnesota | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 2210 | 2023 | 5 | Nevada | Person-to-person | | | | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2211 | 2023 | 5 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2212 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus | | Suspected | School/college/university | 20 | 0 | 0 | 0 | 0 | | | | | | |
| 2213 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2214 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus unknown | | Suspected | Unknown | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2215 | 2023 | 5 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Hospital | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2216 | 2023 | 5 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 36 | 0 | 36 | 0 | 36 | | | | | | |
| 2217 | 2023 | 5 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 20 | 1 | 20 | 0 | 20 | | | | | | |
| 2218 | 2023 | 5 | Kentucky | Food | | | | Restaurant: Sit-down dining | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 2219 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 6 | 0 | 0 | 0 | 0 | | | | | | |
| 2220 | 2023 | 5 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 2221 | 2023 | 5 | California | Food | Clostridium perfringens | | Suspected | Caterer | 42 | 0 | 15 | 0 | 15 | | | | | | |
| 2222 | 2023 | 5 | Texas | Indeterminate/unknown | | | | Residence - Single-family home | 14 | 0 | 14 | 0 | 14 | | | | | | |
| 2223 | 2023 | 5 | Minnesota | Water | Norovirus Genogroup II | unknown | Suspected | Beach | 53 | 0 | 53 | 0 | 53 | | | | Recreational water -- untreated | Lake/Reservoir | |
| 2224 | 2023 | 5 | Montana | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 2225 | 2023 | 5 | Wisconsin | Food | Vibrio parahaemolyticus | | Confirmed | Residence - Multi-unit housing | 2 | 0 | 2 | 0 | 2 | blue crab | | Crustaceans | | | |
| 2226 | 2023 | 5 | Utah | Animal contact | Campylobacter coli | | Confirmed | Farm/dairy/agricultural setting | 2 | 1 | 2 | 0 | 2 | | | | | | Sheep |
| 2227 | 2023 | 5 | Pennsylvania | Person-to-person | | | | Child daycare/preschool | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2228 | 2023 | 5 | Connecticut | Person-to-person | Rotavirus | | Suspected | School/college/university | 40 | 0 | 33 | 0 | 33 | | | | | | |
| 2229 | 2023 | 5 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 18 | 0 | 13 | 0 | 13 | | | | | | |
| 2230 | 2023 | 5 | Virginia | Indeterminate/unknown | Salmonella enterica;Clostridium difficile | Enteritidis | Confirmed;Suspected | Correctional/detention facility | 5 | | 0 | | 0 | | | | | | |
| 2231 | 2023 | 5 | Virginia | Food | Vibrio unknown | | Confirmed | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | Oyster | | Mollusks | | | |
| 2232 | 2023 | 5 | Alabama | Food | | | | Restaurant: Fast-food (drive up service or pay at counter) | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2233 | 2023 | 5 | Nebraska | Animal contact | Cryptosporidium unknown | | Suspected | Residence - Single-family home | 4 | 0 | 2 | 0 | 2 | | | | | | Cattle |
| 2234 | 2023 | 5 | Maryland | Food | | | | | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 2235 | 2023 | 5 | Oregon | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 35 | 3 | 35 | 0 | 35 | | | | | | |
| 2236 | 2023 | 5 | Oregon | Food | Vibrio parahaemolyticus | | Suspected | Restaurant: Sit-down dining | 4 | 1 | 4 | 0 | 4 | Shellfish | | N/A | | | |
| 2237 | 2023 | 5 | Maryland | Food | Salmonella enterica | Enteritidis | Confirmed | Grocery store/bakery/deli/convenience store | 63 | 8 | 63 | 0 | 63 | chicken salad | | Multiple | | | |
| 2238 | 2023 | 5 | Maryland | Food | Shigella flexneri | | Confirmed | | 11 | 1 | 11 | 0 | 11 | | | | | | |
| 2239 | 2023 | 5 | Pennsylvania | Indeterminate/unknown | Cryptosporidium unknown | | Suspected | Residence - Single-family home | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2240 | 2023 | 5 | Alabama | Person-to-person | | | | Restaurant | 5 | 0 | 0 | 0 | 0 | | | | | | |
| 2241 | 2023 | 5 | Ohio | Person-to-person | Cryptosporidium | | Suspected | | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2242 | 2023 | 5 | Wyoming | Food | Cyclospora cayetanensis | | Confirmed | Residence - Single-family home;Restaurant: Buffet;Grocery store/bakery/deli/convenience store;Restaurant: Sit-down dining | 30 | 1 | 29 | 0 | 29 | Arugula | | Vegetable Row Crops | | | |
| 2243 | 2023 | 5 | Ohio | Person-to-person | Norovirus Genogroup II;Norovirus Genogroup II | GII.1;unknown | Suspected;Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 2244 | 2023 | 5 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 18 | | 0 | | 0 | | | | | | |
| 2245 | 2023 | 5 | Nevada | Person-to-person | | | | School/college/university | 82 | 1 | 82 | 0 | 82 | | | | | | |
| 2246 | 2023 | 5 | Kentucky | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 6 | 2 | 6 | 0 | 6 | | | | | | |
| 2247 | 2023 | 5 | Ohio | Person-to-person | Shigella unknown | | Suspected | Residence - Single-family home | 2 | 2 | 2 | | 0 | | | | | | |
| 2248 | 2023 | 5 | Colorado | Indeterminate/unknown | | | | School/college/university | 75 | 0 | 0 | 0 | 75 | | | | | | |
| 2249 | 2023 | 5 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 10 | 1 | 10 | 0 | 10 | | | | | | |
| 2250 | 2023 | 5 | Colorado | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 48 | 3 | 48 | 0 | 48 | | | | | | |
| 2251 | 2023 | 5 | Pennsylvania | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2252 | 2023 | 5 | South Dakota | Person-to-person | Escherichia coli, Shiga toxin-producing | O157:H7 | Confirmed | Child daycare/preschool | 4 | 2 | 4 | 0 | 4 | | | | | | |
| 2253 | 2023 | 5 | Indiana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 24 | 0 | 0 | 0 | 24 | | | | | | |
| 2254 | 2023 | 5 | Michigan | Food | Campylobacter unknown | | Confirmed | Restaurant: Other | 2 | 2 | 2 | | 0 | | | | | | |
| 2255 | 2023 | 5 | Kentucky | Food | | | | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2256 | 2023 | 5 | Texas | Water | Campylobacter jejuni | | Confirmed | Other | 16 | 1 | 1 | 0 | 0 | | | | Drinking water | Community | |
| 2257 | 2023 | 5 | Nebraska | Person-to-person | Rotavirus;Campylobacter unknown | | Confirmed;Suspected | Child daycare/preschool | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 2258 | 2023 | 5 | Illinois | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 41 | 3 | 41 | 0 | 0 | | | | | | |
| 2259 | 2023 | 5 | Minnesota | Food | Salmonella enterica | I 4,[5],12:i:- | Confirmed | Residence - Single-family home;Grocery store/bakery/deli/convenience store | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2260 | 2023 | 5 | Texas | Food | Escherichia coli, Shiga toxin-producing | unknown | Confirmed | Residence - Single-family home | 2 | 1 | 2 | 0 | 2 | chicken | | Chicken | | | |
| 2261 | 2023 | 5 | Minnesota | Person-to-person | Norovirus unknown;Sapovirus | | Suspected;Suspected | Child daycare/preschool | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 2262 | 2023 | 5 | Pennsylvania | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2263 | 2023 | 5 | Kentucky | Person-to-person | Rotavirus | | Confirmed | Long-term care/nursing home/assisted living facility | 45 | 5 | 45 | 0 | 45 | | | | | | |
| 2264 | 2023 | 5 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 37 | 0 | 34 | 0 | 34 | | | | | | |
| 2265 | 2023 | 5 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 39 | 1 | 39 | 0 | 39 | | | | | | |
| 2266 | 2023 | 5 | Arizona | Person-to-person | | | | Hospital | 45 | 0 | 45 | 0 | 45 | | | | | | |
| 2267 | 2023 | 5 | Arizona | Person-to-person | | | | Other | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2268 | 2023 | 5 | Texas | Person-to-person | | | | School/college/university | 7 | 0 | 7 | 0 | 7 | | | | | | |
| 2269 | 2023 | 5 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 2270 | 2023 | 5 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2271 | 2023 | 5 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2272 | 2023 | 5 | Illinois | Person-to-person | Rotavirus | | Confirmed | Long-term care/nursing home/assisted living facility | 10 | 2 | 10 | | 0 | | | | | | |
| 2273 | 2023 | 5 | Illinois | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 23 | 0 | 0 | 0 | 0 | | | | | | |
| 2274 | 2023 | 5 | Idaho | Food | Salmonella enterica | Johannesburg | Confirmed | Residence - Single-family home | 11 | 0 | 11 | 0 | 11 | chicken, shredded | | Chicken | | | |
| 2275 | 2023 | 5 | Illinois | Food | Norovirus Genogroup I | GI.P4 GI.5 | Suspected | Hotel/motel | 29 | 0 | 29 | 0 | 29 | | | | | | |
| 2276 | 2023 | 5 | Illinois | Food | Norovirus unknown | | Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2277 | 2023 | 5 | Illinois | Food | Norovirus unknown | | Suspected | Hotel/motel | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 2278 | 2023 | 5 | New Hampshire | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Long-term care/nursing home/assisted living facility | 49 | 0 | 49 | | 0 | | | | | | |
| 2279 | 2023 | 5 | Maryland | Water | Legionella pneumophila | serogroup 1 | Confirmed | Residence - Multi-unit housing | 2 | 2 | 2 | 1 | 2 | | | | Drinking water | Individual/Private | |
| 2280 | 2023 | 5 | New Hampshire | Person-to-person | | | | Child daycare/preschool | 6 | 0 | 6 | | 0 | | | | | | |
| 2281 | 2023 | 5 | New Hampshire | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 39 | 0 | 39 | | 0 | | | | | | |
| 2282 | 2023 | 5 | Alabama | Food | Cyclospora cayetanensis | | Confirmed | Restaurant: Sit-down dining | 47 | | 0 | | 0 | Jalapenos;Cilantro | | Multiple | | | |
| 2283 | 2023 | 5 | New Hampshire | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | | 0 | | | | | | |
| 2284 | 2023 | 5 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 2285 | 2023 | 5 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 38 | 0 | 0 | 0 | 0 | | | | | | |
| 2286 | 2023 | 5 | Indiana | Person-to-person | Escherichia coli, Shiga toxin-producing | O145 | Confirmed | Child daycare/preschool | 5 | 1 | 5 | 0 | 5 | | | | | | |
| 2287 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2288 | 2023 | 5 | Wisconsin | Water | Legionella pneumophila | serogroup 1 | Confirmed | Long-term care/nursing home/assisted living facility | 2 | 2 | 2 | 0 | 2 | | | | Drinking water | Community | |
| 2289 | 2023 | 5 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 37 | 0 | 28 | 0 | 28 | | | | | | |
| 2290 | 2023 | 5 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 70 | 0 | 37 | 0 | 37 | | | | | | |
| 2291 | 2023 | 5 | Connecticut | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 1 | 14 | 0 | 14 | | | | | | |
| 2292 | 2023 | 5 | Nevada | Person-to-person | | | | Child daycare/preschool | 13 | 0 | 0 | 0 | 0 | | | | | | |
| 2293 | 2023 | 5 | Connecticut | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 43 | 0 | 43 | 0 | 43 | | | | | | |
| 2294 | 2023 | 5 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 2 | | | | | | | | | | |
| 2295 | 2023 | 5 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 4 | 0 | | | | | | | | | |
| 2296 | 2023 | 5 | Washington | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 12 | | | | | | | | | | |
| 2297 | 2023 | 5 | Multistate | Food | Escherichia coli, Shiga toxin-producing | O26:H11 | Confirmed | Restaurant: Fast-food (drive up service or pay at counter);Unknown;Residence - Single-family home | 13 | 7 | 12 | 0 | 12 | Iceberg Lettuce | | Vegetable Row Crops | | | |
| 2298 | 2023 | 5 | Multistate | Food | Salmonella enterica | Newport | Confirmed | Unknown | 27 | 10 | 25 | 0 | 20 | | | | | | |
| 2299 | 2023 | 5 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Restaurant | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 2300 | 2023 | 5 | Illinois | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 16 | 0 | 0 | 0 | 0 | | | | | | |
| 2301 | 2023 | 5 | Minnesota | Indeterminate/unknown | Escherichia coli, Shiga toxin-producing | O157 | Confirmed | Event space | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 2302 | 2023 | 5 | Louisiana | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 2 | 2 | 2 | 0 | 1 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 2303 | 2023 | 5 | New York | Indeterminate/unknown | Salmonella enterica | Paratyphi B var. L(+) tartrate + | Confirmed | Other | 24 | 3 | 24 | 0 | 24 | | | | | | |
| 2304 | 2023 | 5 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 2305 | 2023 | 5 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 7 | 2 | 7 | 0 | 7 | | | | | | |
| 2306 | 2023 | 5 | Arizona | Person-to-person | | | | Child daycare/preschool | 6 | 1 | 6 | 0 | 6 | | | | | | |
| 2307 | 2023 | 5 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 19 | 3 | 19 | 0 | 19 | | | | | | |
| 2308 | 2023 | 5 | Texas | Food | Escherichia coli, Shiga toxin-producing | unknown | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 5 | 0 | 0 | 0 | 0 | Beef steak tacos | | Multiple | | | |
| 2309 | 2023 | 5 | Colorado | Food | Norovirus Genogroup II | | Suspected | Unknown | 101 | 0 | 101 | 0 | 101 | | | | | | |
| 2310 | 2023 | 5 | Georgia | Animal contact | Giardia unknown | | Confirmed | Other | 3 | 0 | 3 | 0 | 3 | | | | | | Dog or puppy |
| 2311 | 2023 | 5 | Utah | Food | Campylobacter jejuni | | Confirmed | Farm/dairy/agricultural setting | 5 | 2 | 5 | 0 | 0 | milk, unpasteurized | | Dairy | | | |
| 2312 | 2023 | 5 | Georgia | Food | Cyclospora cayetanensis | | Confirmed | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | Cilantro | | Herbs | | | |
| 2313 | 2023 | 5 | Colorado | Food | | | | Event space | 15 | 0 | 15 | 0 | 15 | chicken;bread | | Multiple | | | |
| 2314 | 2023 | 5 | North Dakota | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 7 | | 0 | | 0 | | | | | | |
| 2315 | 2023 | 5 | Oregon | Person-to-person | | | | School/college/university | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2316 | 2023 | 5 | Texas | Food | Shigella sonnei | | Confirmed | Restaurant: Sit-down dining | 84 | 13 | 84 | 0 | 84 | | | | | | |
| 2317 | 2023 | 5 | Illinois | Person-to-person | Sapovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 6 | 1 | 6 | 0 | 6 | | | | | | |
| 2318 | 2023 | 5 | Georgia | Food | Salmonella enterica | I 4,[5],12:i:- | Suspected | Restaurant: Sit-down dining | 6 | 1 | 6 | 0 | 6 | | | | | | |
| 2319 | 2023 | 5 | Multistate | Food | Listeria monocytogenes | | Confirmed | Restaurant: Other | 2 | 2 | 2 | 0 | 2 | ice cream | Ice Cream | Multiple | | | |
| 2320 | 2023 | 5 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 0 | 0 | 0 | | | | | | |
| 2321 | 2023 | 5 | Utah | Water | Cyanotoxin other | | Suspected | Park - National Park | 16 | 0 | 14 | 0 | 14 | | | | Recreational water -- untreated | River/Stream | |
| 2322 | 2023 | 5 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 14 | 1 | 14 | 0 | 14 | | | | | | |
| 2323 | 2023 | 5 | Arizona | Person-to-person | | | | School/college/university | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2324 | 2023 | 5 | Arizona | Food | Salmonella enterica | Enteritidis | Confirmed | | 5 | 2 | 5 | 0 | 5 | | | | | | |
| 2325 | 2023 | 5 | West Virginia | Person-to-person | | | | Child daycare/preschool | 16 | 1 | 16 | | | | | | | | |
| 2326 | 2023 | 5 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 21 | 0 | 21 | 0 | 21 | | | | | | |
| 2327 | 2023 | 5 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 15 | 2 | 15 | 0 | 15 | | | | | | |
| 2328 | 2023 | 5 | Arizona | Person-to-person | | | | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 2329 | 2023 | 5 | Arizona | Person-to-person | | | | Child daycare/preschool | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 2330 | 2023 | 5 | West Virginia | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2331 | 2023 | 5 | West Virginia | Person-to-person | Rotavirus | | Suspected | Hospital | 6 | 0 | 0 | 0 | 0 | | | | | | |
| 2332 | 2023 | 5 | West Virginia | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 27 | 0 | 27 | 0 | 27 | | | | | | |
| 2333 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus | | Confirmed | Long-term care/nursing home/assisted living facility | 26 | 0 | 26 | 0 | 26 | | | | | | |
| 2334 | 2023 | 5 | Wisconsin | Person-to-person | Norovirus | | Confirmed | Long-term care/nursing home/assisted living facility | 14 | 1 | 14 | 0 | 14 | | | | | | |
| 2335 | 2023 | 5 | Multistate | Food | Listeria monocytogenes | | Confirmed | Unknown | 4 | 4 | 4 | 0 | 4 | Leafy Greens | | Vegetable Row Crops | | | |
| 2336 | 2023 | 5 | West Virginia | Person-to-person | Rotavirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 1 | 13 | 0 | 13 | | | | | | |
| 2337 | 2023 | 5 | West Virginia | Person-to-person | | | | Child daycare/preschool | 16 | 1 | 16 | 0 | 16 | | | | | | |
| 2338 | 2023 | 5 | West Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 1 | 10 | 0 | 10 | | | | | | |
| 2339 | 2023 | 5 | Kansas | Food | Salmonella enterica | I 4,[5],12:i:- | Confirmed | Restaurant: Sit-down dining | 7 | 1 | 7 | 0 | 7 | | | | | | |
| 2340 | 2023 | 5 | Massachusetts | Food | Salmonella enterica | Enteritidis | Confirmed | Restaurant: Fast-food (drive up service or pay at counter) | 127 | 12 | 127 | 0 | 127 | | | | | | |
| 2341 | 2023 | 5 | Nevada | Person-to-person | | | | Child daycare/preschool | 39 | 0 | 0 | 0 | 0 | | | | | | |
| 2342 | 2023 | 5 | New Mexico | Indeterminate/unknown | Shigella flexneri | serotype 2a | Confirmed | Unknown | 5 | 3 | 3 | 0 | 0 | | | | | | |
| 2343 | 2023 | 5 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2344 | 2023 | 5 | Arizona | Food | Cyclospora | | Confirmed | Unknown;Restaurant: Fast-food (drive up service or pay at counter) | 59 | 8 | 50 | 0 | 59 | Romaine lettuce;greek salad | | Multiple | | | |
| 2345 | 2023 | 5 | Iowa | Person-to-person | Norovirus Genogroup I;Norovirus Genogroup I | GI.P5 GI.5;unknown | Confirmed;Suspected | Residence - Single-family home | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2346 | 2023 | 5 | Iowa | Indeterminate/unknown | | | | Child daycare/preschool | 41 | 0 | 0 | 0 | 41 | | | | | | |
| 2347 | 2023 | 5 | Iowa | Person-to-person | Norovirus Genogroup I | unknown | Suspected | School/college/university | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2348 | 2023 | 5 | Connecticut | Food | Escherichia coli, Shiga toxin-producing | O157:H7 | Confirmed | Event space;Unknown | 4 | 4 | 4 | 0 | 4 | | | | | | |
| 2349 | 2023 | 5 | Connecticut | Food | Norovirus Genogroup II | | Suspected | Other | 15 | | 0 | | 0 | | | | | | |
| 2350 | 2023 | 5 | Michigan | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hospital | 2 | 2 | 2 | 0 | 2 | | | | Drinking water;Other/Environmental water | Community | |
| 2351 | 2023 | 5 | Kansas | Indeterminate/unknown | Salmonella enterica | I 4,[5],12:b:- var. L(+) tartrate + | Confirmed | Unknown | 8 | 5 | 7 | | 0 | | | | | | |
| 2352 | 2023 | 5 | Idaho | Person-to-person | Norovirus Genogroup II | unknown | Suspected | Residence - Single-family home | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 2353 | 2023 | 5 | Arizona | Food | Norovirus Genogroup II | unknown | Suspected | Unknown;Food truck/street vendor | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2354 | 2023 | 5 | Massachusetts | Indeterminate/unknown | Norovirus unknown | | Suspected | Event space | 5 | 0 | 0 | 0 | 0 | | | | | | |
| 2355 | 2023 | 5 | Ohio | Water | Legionella pneumophila | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 2 | 1 | 2 | 0 | 2 | | | | Undetermined water | | |
| 2356 | 2023 | 5 | Oregon | Food | Salmonella enterica | Newport | Confirmed | Unknown | 6 | 3 | 6 | 0 | 6 | | | | | | |
| 2357 | 2023 | 5 | Washington | Food | Norovirus | | Suspected | Restaurant: Sit-down dining | 6 | 0 | 4 | 0 | 4 | | | | | | |
| 2358 | 2023 | 5 | Washington | Food | Unknown - Bacterium | | Suspected | Restaurant: Sit-down dining | 6 | 0 | 6 | 0 | 6 | Blackened chicken mac & cheese | | Multiple | | | |
| 2359 | 2023 | 5 | Colorado | Food | | | | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2360 | 2023 | 5 | Colorado | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2361 | 2023 | 5 | Multistate | Food | Salmonella enterica | Saintpaul | Confirmed | | 11 | 1 | 9 | 0 | 9 | | | | | | |
| 2362 | 2023 | 5 | Colorado | Person-to-person | | | | School/college/university | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2363 | 2023 | 5 | Colorado | Person-to-person | | | | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2364 | 2023 | 5 | Arkansas | Person-to-person | Escherichia coli, Shiga toxin-producing | O157:H7 | Confirmed | Child daycare/preschool | 2 | 2 | 2 | 1 | 2 | | | | | | |
| 2365 | 2023 | 5 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 10 | 1 | 10 | 0 | 10 | | | | | | |
| 2366 | 2023 | 5 | Colorado | Person-to-person | Norovirus | | Suspected | School/college/university | 97 | 0 | 0 | 0 | 0 | | | | | | |
| 2367 | 2023 | 5 | Colorado | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 18 | 0 | 0 | 0 | 0 | | | | | | |
| 2368 | 2023 | 5 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 3 | 7 | 0 | 0 | | | | | | |
| 2369 | 2023 | 5 | Colorado | Person-to-person | | | | School/college/university | 25 | 0 | 0 | 0 | 25 | | | | | | |
| 2370 | 2023 | 5 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 2371 | 2023 | 5 | Colorado | Person-to-person | | | | Child daycare/preschool | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 2372 | 2023 | 5 | Colorado | Indeterminate/unknown | | | | School/college/university | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 2373 | 2023 | 5 | Colorado | Person-to-person | Rotavirus;Norovirus unknown | | Suspected;Confirmed | Other healthcare facility | 20 | 5 | 20 | 0 | 20 | | | | | | |
| 2374 | 2023 | 5 | Colorado | Person-to-person | | | | Child daycare/preschool | 18 | 0 | 18 | 0 | 18 | | | | | | |
| 2375 | 2023 | 5 | Colorado | Person-to-person | | | | Child daycare/preschool | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 2376 | 2023 | 5 | Colorado | Person-to-person | Norovirus | | Suspected | Child daycare/preschool | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 2377 | 2023 | 5 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2378 | 2023 | 5 | Colorado | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
| 2379 | 2023 | 5 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 33 | 0 | 33 | 0 | 33 | | | | | | |
| 2380 | 2023 | 5 | Colorado | Person-to-person | Norovirus | | Suspected | School/college/university | 42 | 0 | 42 | 0 | 42 | | | | | | |
| 2381 | 2023 | 5 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Other healthcare facility | 101 | 0 | 0 | 0 | 0 | | | | | | |
| 2382 | 2023 | 5 | Colorado | Person-to-person | | | | School/college/university | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 2383 | 2023 | 5 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Long-term care/nursing home/assisted living facility | 50 | 0 | 50 | 0 | 50 | | | | | | |
| 2384 | 2023 | 5 | Colorado | Person-to-person | | | | Child daycare/preschool | 6 | 0 | 0 | 0 | 0 | | | | | | |
| 2385 | 2023 | 5 | Maine | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 5 | 2 | 5 | 0 | 5 | | | | | | |
| 2386 | 2023 | 5 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 2387 | 2023 | 5 | Maine | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 21 | | 0 | | 0 | | | | | | |
| 2388 | 2023 | 5 | Maine | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 48 | 1 | 48 | 0 | 48 | | | | | | |
| 2389 | 2023 | 5 | Maine | Person-to-person | | | | School/college/university | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2390 | 2023 | 5 | Washington | Food | Salmonella enterica | Enteritidis | Suspected | Residence - Single-family home;Campground | 9 | | 0 | | 0 | Whole roaster pig | | Pork | | | |
| 2391 | 2023 | 5 | Maine | Food | | | | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2392 | 2023 | 5 | Maine | Food | | | | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2393 | 2023 | 5 | California | Food | Bacillus cereus;Clostridium perfringens | | Suspected;Suspected | Restaurant: Sit-down dining | 4 | 0 | 4 | 0 | 4 | chips;bean dip | | Multiple | | | |
| 2394 | 2023 | 5 | California | Food | Staphylococcus aureus | | Suspected | Restaurant: Fast-food (drive up service or pay at counter) | 6 | 0 | 6 | 0 | 6 | ranch dressing | | Multiple | | | |
| 2395 | 2023 | 5 | California | Food | | | | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | taco, unspecified | carnitas | Pork | | | |
| 2396 | 2023 | 6 | Ohio | Food | | | | Residence - Single-family home;Restaurant: Other | 34 | 1 | 34 | 0 | 34 | | | | | | |
| 2397 | 2023 | 6 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 2 | 13 | 0 | 13 | | | | | | |
| 2398 | 2023 | 6 | Wisconsin | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 2399 | 2023 | 6 | Utah | Food | | | | Restaurant: Sit-down dining | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2400 | 2023 | 6 | New York | Food | Scombroid toxin | | Confirmed | Other | 2 | | 0 | 0 | 2 | Tuna Burgers | fish, tuna | Fish | | | |
| 2401 | 2023 | 6 | Ohio | Food | Norovirus unknown | | Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2402 | 2023 | 6 | Pennsylvania | Indeterminate/unknown | | | | Long-term care/nursing home/assisted living facility | 10 | 1 | 10 | 0 | 10 | | | | | | |
| 2403 | 2023 | 6 | Ohio | Person-to-person | Shigella unknown | | Suspected | Residence - Single-family home | 4 | 1 | 4 | 0 | 4 | | | | | | |
| 2404 | 2023 | 6 | New Mexico | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 11 | 1 | 1 | 0 | 0 | | | | | | |
| 2405 | 2023 | 6 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 7 | 0 | 0 | 0 | 0 | | | | | | |
| 2406 | 2023 | 6 | Virginia | Person-to-person | Norovirus unknown | | Suspected | School/college/university | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 2407 | 2023 | 6 | Virginia | Food | | | | | 10 | 0 | 10 | 0 | 10 | | | | | | |
| 2408 | 2023 | 6 | Oregon | Person-to-person | | | | Child daycare/preschool | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2409 | 2023 | 6 | Oregon | Person-to-person | | | | Child daycare/preschool | 23 | 0 | 23 | 0 | 23 | | | | | | |
| 2410 | 2023 | 6 | Utah | Food | | | | Restaurant: Fast-food (drive up service or pay at counter) | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2411 | 2023 | 6 | Ohio | Person-to-person | Norovirus Genogroup I | GI.P4 GI.4 | Confirmed | Long-term care/nursing home/assisted living facility | 49 | 0 | 49 | 0 | 49 | | | | | | |
| 2412 | 2023 | 6 | Ohio | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 2413 | 2023 | 6 | Utah | Food | | | | Restaurant: Fast-food (drive up service or pay at counter) | 4 | 0 | 3 | 0 | 3 | | | | | | |
| 2414 | 2023 | 6 | Florida | Food | Other - Chemical/Toxin | | Confirmed | Restaurant: Sit-down dining | 11 | 0 | 11 | 0 | 11 | rice, long grain | | Grains-beans | | | |
| 2415 | 2023 | 6 | Florida | Food | Mycotoxins | | Confirmed | Residence - Single-family home | 2 | 2 | 2 | 0 | 2 | Mushroom | | Fungi | | | |
| 2416 | 2023 | 6 | Montana | Person-to-person | Norovirus Genogroup II | | Suspected | Long-term care/nursing home/assisted living facility | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 2417 | 2023 | 6 | Nebraska | Food | Norovirus Genogroup II | GII.P16 GII.10 | Confirmed | Soup kitchen/meal center | 23 | 3 | 23 | 0 | 23 | | | | | | |
| 2418 | 2023 | 6 | Virginia | Food | Bacillus cereus | | Confirmed | Caterer | 46 | 0 | 46 | 0 | 46 | Pulled Pork | | Pork | | | |
| 2419 | 2023 | 6 | Minnesota | Indeterminate/unknown | | | | Residence - Single-family home | 17 | 0 | 2 | 0 | 2 | | | | | | |
| 2420 | 2023 | 6 | Wisconsin | Food | Clostridium perfringens | | Confirmed | Residence - Single-family home | 26 | 0 | 26 | 0 | 26 | taco ground beef | ground beef | Beef | | | |
| 2421 | 2023 | 6 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 24 | 1 | 24 | 0 | 24 | | | | | | |
| 2422 | 2023 | 6 | Wisconsin | Person-to-person | Norovirus unknown;Clostridium difficile | | Confirmed;Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 1 | 9 | | | | | | |
| 2423 | 2023 | 6 | Nebraska | Indeterminate/unknown | | | | Event space | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2424 | 2023 | 6 | Massachusetts | Food | | | | | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 2425 | 2023 | 6 | Ohio | Person-to-person | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Suspected | Long-term care/nursing home/assisted living facility | 17 | 0 | 0 | 0 | 0 | | | | | | |
| 2426 | 2023 | 6 | Ohio | Food | | | | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2427 | 2023 | 6 | Utah | Water | | | | Community/municipality | 5 | 0 | 5 | 0 | 5 | | | | Recreational water -- treated | Pool - Kiddie/Wading, Permanent | |
| 2428 | 2023 | 6 | Montana | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 9 | 1 | 9 | 0 | 9 | | | | | | |
| 2429 | 2023 | 6 | Ohio | Person-to-person | Norovirus Genogroup I;Escherichia coli, Shiga toxin-producing | unknown;other | Confirmed;Suspected | Campground | 29 | 1 | 29 | 0 | 29 | | | | | | |
| 2430 | 2023 | 6 | Maryland | Food | Vibrio cholerae;Escherichia coli, Enteropathogenic;Escherichia coli, Enterotoxigenic | | Suspected;Suspected;Suspected | Unknown | 2 | 1 | 2 | 0 | 2 | Oyster Shooters;oysters | | Multiple | | | |
| 2431 | 2023 | 6 | Pennsylvania | Indeterminate/unknown | | | | Residence - Single-family home | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 2432 | 2023 | 6 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 47 | 0 | 47 | 0 | 47 | | | | | | |
| 2433 | 2023 | 6 | Tennessee | Food | Escherichia coli, Shiga toxin-producing;Staphylococcus aureus;Escherichia coli, Enteropathogenic | unknown | Suspected;Confirmed;Confirmed | Residence - Single-family home | 33 | 1 | 33 | 0 | 33 | pozole | tomato;radish;pork;iceberg lettuce;chicken | Multiple | | | |
| 2434 | 2023 | 6 | Ohio | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 2435 | 2023 | 6 | Ohio | Food | Salmonella enterica | Enteritidis | Confirmed | Correctional/detention facility | 9 | 1 | 9 | 0 | 9 | | | | | | |
| 2436 | 2023 | 6 | Ohio | Person-to-person | Escherichia coli, Shiga toxin-producing | other | Confirmed | Residence - Single-family home | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 2437 | 2023 | 6 | Minnesota | Food | Escherichia coli, Shiga toxin-producing | O157:H7 | Confirmed | Restaurant: Sit-down dining | 18 | 4 | 16 | 0 | 18 | Romaine lettuce | romaine lettuce | Vegetable Row Crops | | | |
| 2438 | 2023 | 6 | Indiana | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 21 | 3 | 21 | 1 | 21 | | | | | | |
| 2439 | 2023 | 6 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Child daycare/preschool | 19 | 0 | 19 | 0 | 19 | | | | | | |
| 2440 | 2023 | 6 | Ohio | Food | | | | Restaurant: Sit-down dining | 12 | 0 | 12 | 0 | 12 | | | | | | |
| 2441 | 2023 | 6 | South Carolina | Food | Norovirus unknown | | Suspected | | 4 | 0 | 4 | 0 | 4 | | | | | | |
| 2442 | 2023 | 6 | South Carolina | Person-to-person | Norovirus unknown;Salmonella enterica | unknown | Suspected;Suspected | Child daycare/preschool | 8 | 0 | 8 | 0 | 8 | | | | | | |
| 2443 | 2023 | 6 | North Carolina | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2444 | 2023 | 6 | Wisconsin | Person-to-person | Sapovirus | | Suspected | Long-term care/nursing home/assisted living facility | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2445 | 2023 | 6 | North Carolina | Person-to-person | Norovirus unknown | | Confirmed | Organized camp facility | 95 | 0 | 95 | 0 | 95 | | | | | | |
| 2446 | 2023 | 6 | Minnesota | Indeterminate/unknown | | | | Office/indoor workplace | 8 | 0 | 3 | 0 | 3 | | | | | | |
| 2447 | 2023 | 6 | Utah | Food | | | | Restaurant: Fast-food (drive up service or pay at counter) | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2448 | 2023 | 6 | New York | Person-to-person | | | | Organized camp facility | 46 | 0 | 46 | 0 | 46 | | | | | | |
| 2449 | 2023 | 6 | Wisconsin | Animal contact | Cryptosporidium parvum | IIaA15G2R1 | Confirmed | | 2 | 0 | 2 | 0 | 2 | | | | | | Sheep |
| 2450 | 2023 | 6 | Wisconsin | Food | Norovirus Genogroup II | GII.P16 GII.4 untypeable | Suspected | Restaurant: Sit-down dining | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2451 | 2023 | 6 | Wisconsin | Person-to-person | | | | Organized camp facility | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2452 | 2023 | 6 | Minnesota | Person-to-person | Norovirus unknown | | Suspected | Hospital | 12 | 0 | 8 | 0 | 8 | | | | | | |
| 2453 | 2023 | 6 | Ohio | Animal contact | Cryptosporidium unknown | | Confirmed | Farm/dairy/agricultural setting;Veterinary clinic | 2 | 0 | 2 | 0 | 2 | | | | | | Cattle |
| 2454 | 2023 | 6 | Virginia | Food | Norovirus Genogroup II;Norovirus Genogroup II | GII.P7 GII.14;unknown | Confirmed;Suspected | | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 2455 | 2023 | 6 | Indiana | Person-to-person | Norovirus | | Suspected | Organized camp facility | 7 | | 0 | 0 | 7 | | | | | | |
| 2456 | 2023 | 6 | Massachusetts | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 5 | 1 | 5 | 0 | 0 | | | | | | |
| 2457 | 2023 | 6 | Kentucky | Person-to-person | Norovirus unknown | | Suspected | Hospital | 9 | 0 | 9 | 0 | 9 | | | | | | |
| 2458 | 2023 | 6 | Oregon | Person-to-person | | | | Child daycare/preschool | 15 | 0 | 15 | 0 | 15 | | | | | | |
| 2459 | 2023 | 6 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 2460 | 2023 | 6 | Oregon | Person-to-person | | | | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | | | |
| 2461 | 2023 | 6 | Oregon | Person-to-person | | | | Child daycare/preschool | 6 | 0 | 6 | 0 | 6 | | | | | | |
| 2462 | 2023 | 6 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 3 | 0 | 3 | 0 | 3 | | | | | | |
| 2463 | 2023 | 6 | Oregon | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 13 | 0 | 0 | 0 | 0 | | | | | | |
| 2464 | 2023 | 6 | Ohio | Person-to-person | Shigella unknown | | Suspected | Residence - Single-family home | 4 | 1 | 4 | 0 | 4 | | | | | | |
| 2465 | 2023 | 6 | New Mexico | Person-to-person | Salmonella unknown | | Confirmed | Child daycare/preschool | 4 | 0 | 0 | 0 | 0 | | | | | | |
| 2466 | 2023 | 6 | South Carolina | Indeterminate/unknown | Clostridium difficile | | Confirmed | Hospital | 2 | 2 | 2 | 0 | 2 | | | | | | |
| 2467 | 2023 | 6 | South Carolina | Water | Legionella pneumophila | serogroup 1 | Confirmed | Hotel/motel | 2 | 1 | 1 | 0 | 2 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 2468 | 2023 | 6 | Maryland | Food | Salmonella unknown;Campylobacter unknown | | Suspected;Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | Duck Liver Pate | | Other Poultry | | | |
| 2469 | 2023 | 6 | Oregon | Person-to-person | | | | School/college/university | 37 | 0 | 0 | 0 | 0 | | | | | | |
| 2470 | 2023 | 6 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 25 | 0 | 25 | 0 | 25 | | | | | | |
| 2471 | 2023 | 6 | Oregon | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 20 | 1 | 20 | 0 | 20 | | | | | | |
| 2472 | 2023 | 6 | Ohio | Person-to-person | Shigella flexneri | | Confirmed | Residence - Single-family home | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2473 | 2023 | 6 | Virginia | Food | Escherichia coli, Shiga toxin-producing | O26:H11 | Confirmed | | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2474 | 2023 | 6 | Virginia | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 40 | 0 | 40 | 0 | 40 | | | | | | |
| 2475 | 2023 | 6 | New York | Food | Vibrio parahaemolyticus | unknown | Suspected | Restaurant: Sit-down dining | 2 | 0 | 2 | 0 | 2 | oysters | oysters, raw | Mollusks | | | |
| 2476 | 2023 | 6 | Kentucky | Indeterminate/unknown | Escherichia coli, Shiga toxin-producing | O157:H7 | Confirmed | Other | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2477 | 2023 | 6 | Ohio | Person-to-person | Norovirus Genogroup II | unknown | Confirmed | Long-term care/nursing home/assisted living facility | 17 | 0 | 17 | 0 | 17 | | | | | | |
| 2478 | 2023 | 6 | Minnesota | Food | Campylobacter jejuni | | Confirmed | | 3 | 1 | 3 | 0 | 3 | | | | | | |
| 2479 | 2023 | 6 | Arizona | Person-to-person | | | | Long-term care/nursing home/assisted living facility | 35 | 0 | 35 | 0 | 35 | | | | | | |
| 2480 | 2023 | 6 | Alabama | Person-to-person | Shigella | | Suspected | Child daycare/preschool | 22 | 0 | 22 | 0 | 22 | | | | | | |
| 2481 | 2023 | 6 | Michigan | Person-to-person | Norovirus | | Suspected | School/college/university | 82 | 0 | 82 | 0 | 82 | | | | | | |
| 2482 | 2023 | 6 | Michigan | Person-to-person | Norovirus | | Suspected | Long-term care/nursing home/assisted living facility | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2483 | 2023 | 6 | Michigan | Person-to-person | Norovirus | | Suspected | Other | 30 | 0 | 30 | 0 | 30 | | | | | | |
| 2484 | 2023 | 6 | Michigan | Indeterminate/unknown | Norovirus Genogroup II | unknown | Confirmed | Religious facility | 44 | 0 | 44 | 0 | 44 | | | | | | |
| 2485 | 2023 | 6 | Virginia | Person-to-person | Escherichia coli, Shiga toxin-producing | O157:H7 | Confirmed | Child daycare/preschool | 4 | 2 | 4 | 0 | 4 | | | | | | |
| 2486 | 2023 | 6 | Maryland | Food | | | | | 13 | 0 | 13 | 0 | 13 | | | | | | |
| 2487 | 2023 | 6 | Wisconsin | Water | Chlorine Gas | | Suspected | Camp/cabin | 5 | 0 | 5 | 0 | 5 | | | | Recreational water -- treated | Pool - Other Swimming Pool | |
| 2488 | 2023 | 6 | Tennessee | Food | Cyclospora cayetanensis | | Confirmed | Restaurant: Sit-down dining | 7 | 1 | 7 | 0 | 7 | Cilantro | cilantro | Herbs | | | |
| 2489 | 2023 | 6 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 28 | 0 | 0 | 0 | 0 | | | | | | |
| 2490 | 2023 | 6 | Florida | Food | Bacillus cereus | | Suspected | Restaurant: Sit-down dining | 3 | 0 | 3 | 0 | 3 | rice | | Grains-beans | | | |
| 2491 | 2023 | 6 | Louisiana | Water | Escherichia coli, Enteropathogenic | unknown | Suspected | Child daycare/preschool | 5 | 0 | 5 | 0 | 5 | | | | Recreational water -- treated | Pool - Kiddie/Wading, Temporary | |
| 2492 | 2023 | 6 | Kentucky | Water | Legionella pneumophila | serogroup 1 | Confirmed | Residence - Multi-unit housing | 4 | 4 | 4 | 0 | 4 | | | | Recreational water -- treated | Hot Tub/Spa/Whirlpool | |
| 2493 | 2023 | 6 | Colorado | Person-to-person | Norovirus unknown | | Confirmed | Campground | 11 | 0 | 11 | 0 | 11 | | | | | | |
| 2494 | 2023 | 6 | Pennsylvania | Food | Campylobacter unknown | | Confirmed | Unknown | 4 | 0 | 4 | 0 | 4 | raw goat milk | | Dairy | | | |
| 2495 | 2023 | 6 | Indiana | Indeterminate/unknown | Salmonella other | | Confirmed | Correctional/detention facility | 63 | 0 | 63 | 0 | 63 | | | | | | |
| 2496 | 2023 | 6 | Missouri | Indeterminate/unknown | Escherichia coli, Shiga toxin-producing | O111:H8 | Confirmed | Organized camp facility | 10 | 3 | 3 | 0 | 3 | | | | | | |
| 2497 | 2023 | 6 | Idaho | Food | Escherichia coli, Shiga toxin-producing | O157:H7 | Suspected | | 2 | 0 | 2 | 0 | 2 | | | | | | |
| 2498 | 2023 | 6 | Pennsylvania | Indeterminate/unknown | | | | Residence - Single-family home | 3 | 1 | 3 | 0 | 3 | | | | | | |
| 2499 | 2023 | 6 | Michigan | Food | Salmonella enterica | Enteritidis | Suspected | Unknown | 2 | 1 | 2 | 0 | 2 | | | | | | |
| 2500 | 2023 | 6 | Illinois | Person-to-person | Norovirus unknown | | Suspected | Long-term care/nursing home/assisted living facility | 16 | 0 | 16 | 0 | 16 | | | | | | |
