STREPTOCOCCUS s. b. e. IN SUBACUTE BACTERIAL ENDOCARDITIS

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Abstract
The subject of the present report is an investigation of organisms recovered from the blood of patients with subacute bacterial endocarditis which were obtained from various sources. The identities of the first 106 consecutive cultures submitted are presented in table 1. Of interest in this study was the isolation of an apparently new variety of nonhemolytic streptococcus in 41 instances (39 per cent); this organism is now designated Streptococcus s. b. e. Apart from the fact that it had not been recovered or recognized previous to this study, its high incidence warranted intensive investigation. Its cultural properties, relationship to other streptococci and serologic classification were studied in detail. The significant cultural characteristics of Streptococcus s. b. e. are briefly as follows: Greening occurs on blood agar in twenty-four hours. Hydrolyzes arginine in forty-eight hours. Ferments inulin in one week. Does not ferment raffinose. Does not

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