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</div><div><span>Brucellosis</span></div></div>
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</noscript></div><div class="main"><div id="ency_summary"><p>Brucellosis is a bacterial infection that occurs from contact with animals carrying brucella bacteria.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>Causes</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>Brucella can infect cattle, goats, camels, dogs, and pigs. The bacteria can spread to humans by:</p><ul><li>Coming in contact with infected meat or the placenta of infected animals</li><li>Eating unpasteurized cheese</li><li>Drinking unpasteurized milk</li></ul><p>Brucellosis is rare in the United States. About 100 to 200 cases occur each year. Most cases are caused by the <em>Brucella melitensis</em> bacteria.</p><p>People working in jobs where they often come in contact with animals or meat are at higher risk. This includes slaughterhouse workers, farmers, and veterinarians.</p><p>Brucella is found in many countries worldwide including:</p><ul><li>Egypt</li><li>Iraq</li><li>Iran</li><li>Jordan</li><li>Saudi Arabia</li><li>Chad</li><li>Greece</li><li>Mexico</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Symptoms</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p><a test="test" href="./002215.htm">Acute</a> brucellosis may begin with mild <a test="test" href="./000080.htm">flu-like</a> symptoms, or symptoms such as:</p><ul><li>Abdominal pain</li><li>Back pain</li><li>Fever and chills</li><li>Excessive sweating</li><li>Fatigue</li><li>Headache</li><li>Joint and muscle pain</li><li>Loss of appetite</li><li>Swollen glands</li><li>Weakness</li><li>Weight loss</li></ul><p>High fever spikes often occur every afternoon. The name undulant fever is often used to describe this disease because the fever rises and falls in waves.</p><p>The illness may be <a test="test" href="./002312.htm">chronic</a> and last for years.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Exams and Tests</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>Your health care provider will examine you and ask about your symptoms. You'll also be asked if you've been in contact with animals or possibly eaten dairy products that were not pasteurized. </p><p>Tests that may be done include:</p><ul><li><a test="test" href="./003536.htm">Blood test for brucellosis</a></li><li><a test="test" href="./003744.htm">Blood culture</a></li><li><a test="test" href="./003682.htm">Bone marrow culture</a></li><li><a test="test" href="./003751.htm">Urine culture</a></li><li><a test="test" href="./003769.htm">CSF (spinal fluid) culture</a></li><li>Biopsy and culture of specimen from affected organ</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Treatment</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>Antibiotics are used to treat the infection and prevent it from coming back. These include:</p><ul><li>Doxycycline</li><li>Streptomycin</li><li>Gentamicin</li><li>Rifampin</li></ul><p>Often, you need to take antibiotics for 6 weeks. If there are complications from brucellosis, you will likely need to take the medicines for a longer period.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Outlook (Prognosis)</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>Symptoms may come and go for years. Also, the illness can come back after a long period of not having symptoms.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Possible Complications</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Health problems that may result from brucellosis include:</p><ul><li>Bone and joint infection and damage</li><li><a test="test" href="./001415.htm">Encephalitis</a> (swelling or inflammation of the brain)</li><li><a test="test" href="./001098.htm">Infective endocarditis</a> (inflammation of the inside lining of the heart chambers and heart valves)</li><li><a test="test" href="./000680.htm">Meningitis</a> (infection of the membranes covering the brain and spinal cord)</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>When to Contact a Medical Professional</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>Contact your provider for an appointment if:</p><ul><li>You develop symptoms of brucellosis</li><li>Your symptoms get worse or do not improve with treatment</li><li>You develop new symptoms after treatment for brucellosis</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Prevention</h2></div><div class="section-button"><button type="submit" aria-controls="section-8" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-8"><p>Drinking and eating only pasteurized dairy products, such as milk and cheeses, is the most important way to reduce the risk for brucellosis. People who handle meat should wear protective eyewear and clothing and protect <a test="test" href="./000043.htm">skin breaks</a> from infection.</p><p>Detecting infected animals controls the infection at its source. Vaccination is available for cattle, but not humans.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Cyprus fever; Undulant fever; Gibraltar fever; Malta fever; Mediterranean fever</p></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Images</h2></div><div class="section-button"><button type="submit" aria-controls="section-tnails" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/17102t.jpg" alt="Brucellosis" title="Brucellosis" class="side-img"/><a href="../imagepages/17102.htm">Brucellosis</a></li>
<li><img src="//medlineplus.gov/ency/images/ency/tnails/9069t.jpg" alt="Antibodies" title="Antibodies" class="side-img"/><a href="../imagepages/9069.htm">Antibodies</a></li>
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</div></div><div class="section-body" id="section-Ref"><p>Gotuzzo E, Ryan ET. Brucellosis. In: Ryan ET, Hill DR, Solomon T, Aronson NE, Endy TP, eds. <em>Hunter's Tropical Medicine and Emerging Infectious Diseases</em>. 10th ed. Philadelphia, PA: Elsevier; 2020:chap 75.</p><p>Gul HC, Erdem H. Brucellosis (<em>Brucella</em> species). In: Bennett JE, Dolin R, Blaser MJ, eds. <em>Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases</em>. 9th ed. Philadelphia, PA: Elsevier; 2020:chap 226.</p></div></div></section>
<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 8/26/2023</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Jatin M. Vyas, MD, PhD, Associate Professor in Medicine, Harvard Medical School; Associate in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital, Boston, MA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.</p>
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