A case of prosthetic mitral valve endocarditis caused by Brucella abortus.

Endocarditis is a rare but serious complication of brucellosis. We report here a case of Brucella abortus endocarditis occurring on a prosthetic mitral valve. The diagnosis was established by positive serology, the presence of vegetation on the mitral prosthesis and isolation of B. abortus from the blood and valve cultures. The patient was successfully treated with combined medical and surgical therapy.