Reviewed: December 2017

Brucellosis is a bacterial disease caused by the Brucella bacteria. Brucella usually infects animals but can spread to humans. Animal species most commonly infected with brucellosis include sheep, cattle, goats, pigs, camels, and dogs. In humans, it can cause symptoms of fever, headache, and fatigue among others. Brucellosis in humans is not very common in the United States with fewer than 150 cases reported every year.

Go to Communicable Disease Control Page