Erysipelothrix rhusiopathiae endocarditis in man is a very rare disease. The bacteria can be easily misiden- tified as nonpathogenic gram-positive bacilli or streptococci. This organism was isolated from blood samples taken from a 39-year-old male farmer with subacute bacterial endocarditis. The patient had cirrhosis of the liver; diabetes, and tuberculosis. The isolate showed typical cultural and biochemical characteristics such as facultative growth, formation of small greenish colonies on blood agar, positive hydrogen sulfide, negative catalase, and nonmotility. The isolate was susceptible to penicillin G and the cephalosporins.
Adult ; Endocarditis, Subacute Bacterial/diagnosis* ; Endocarditis, Subacute Bacterial/drug therapy ; Erysipeloid/diagnosis* ; Erysipeloid/drug therapy ; Human ; Male