(Undulant Fever; Bang’s Disease; Malta Fever)
by Krisha McCoy, MS
Brucellosis is a bacterial infection.
The bacteria infects livestock such as sheep, goats, cattle, deer, elk, and pigs. Humans get the bacteria from infected livestock by:
Rarely, it can pass between people by:
Your risk may be higher if you:
In most cases, symptoms appear within 2-4 weeks after infection. However, symptoms can appear from 5 days to several months after.
Early symptoms may involve:
Brucellosis causes a high fever (104°F-105°F). It goes up in the evening and returns to normal by morning. Evening fevers can also cause severe sweating. This cycle lasts 1-5 weeks. In some people, the fever will return. It may do so once or many times over months or years.
In addition to the list above, late symptoms may involve:
Serious problems may involve:
Women who have the infection early in their pregnancy may have a higher risk of miscarriage.
Your doctor will ask about your symptoms, and healthl and travel history.
You may also have:
Brucellosis goes away on its own in most people. Finding it early and starting care will lower the chance of long-term health problems.
To help lower your chances of brucellosis:
Centers for Disease Control and Prevention
US Department of Agriculture
Public Health Agency of Canada
Brucellosis. Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/brucellosis. Updated September 13, 2017. Accessed May 14, 2018.
Brucellosis. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T115233/Brucellosis . Updated August 4, 2017. Accessed May 14, 2018.
Patel PJ, Kolawole TM, Sharma N, a-Faqih S. Sonographic findings in scrotal brucellosis. J Clin Ultrasound. 1988;16(7):483-486.
Last reviewed May 2018 by David L. Horn, MD, FACP
Last Updated: 5/14/2018
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