title: Endocarditis caused by Actinomyces viscosus.
abstract: A case of severe endocarditis caused by Actinomyces viscosus is described in a previously healthy 70-year-old man. The isolated strain has been characterized by biochemical tests, gas-liquid chromatography and serology. The pathogenic significance of the organism is discussed and the difficulty in reaching a correct diagnosis due to the similarity to species of Corynebacterium is pointed out.
mesh_terms: D000190:Actinomyces / Q000302:isolation & purification; D000196:Actinomycosis / Q000188:drug therapy / Q000382:microbiology; D000368:Aged; D004697:Endocarditis, Bacterial / Q000188:drug therapy / Q000382:microbiology*; D006801:Humans; D008297:Male; D010400:Penicillin G / Q000627:therapeutic use
chemical_list: D010400:Penicillin G