Cardiobacterium hominisEndocarditis: Characterization of the Unusual Organisms and Review of the Literature

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Abstract
Weiner, Matei, and Werthamer, Seymour: Cardiobacterium hominis Endocarditis. Characterization of the Unusual Organisms and Review of the Literature. Am. J. Clin. Pathol. 63: 131–134, 1975. A case of subacute bacterial endocarditis in which Cardiobacterium hominis was isolated from the blood of a 55-year-old woman who had rheumatic heart disease is reported. A survey of the literature revealed very few reports in which this organism has been implicated in human lesions. The colonies grew after 48 hours of incubation in a candle jar. They were small, convex, nonhemolytic, and oxidase-positive. The indole reaction was positive, the catalase and nitrate reactions were negative, and acid reaction was obtained from the following carbohydrates: glucose, maltose, mannitol, sucrose, and sorbitol. The morphologic and biochemical properties served to distinguish these organisms from similar bacteria implicated in human disease, such as Haemophilus aphrophilus, Actinobacillus actinomycetemcomitans, Streptobacillus moniliformis, and HB-1.

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