Brucella abortus is a human pathogen. In humans, brucellosis can be a serious, debilitating and sometimes chronic disease that may affect a variety of organs. Most cases are the result of occupational exposure to infected animals (cattle, bison and buffalo), but infections can also occur from ingesting contaminated dairy products. Typically, brucellosis begins as an acute febrile illness with nonspecific flu-like signs. Occasionally seen complications include arthritis, spondylitis, chronic fatigue, and epididymoorchitis. Neurologic signs, anemia, internal abscesses, nephritis, endocarditis and dermatitis can also occur.