Abstract
In the year 1976, 9614 outpatient throat cultures were received in the Babies Hospital Bacteriology Laboratory. Cultures were plated on sheep blood agar with bacitracin disc applied and incubated overnight at 35° C. in a GASPAK anaerobic jar. 60% had no beta hemolytic colonies. Of the 40% with beta hemolytic colonies, 16% required further identification, 7% by replate, 9% by fluorescent antibody (FA). 21% of all cultures and 52% of all cultures with beta hemolytic colonies were presumptive Group A Strep (group 3). The ratio of Presumptive Group A Strep to non Group A Strep cultures was remarkably consistent month by month.
Group 1 - no beta hemolytic colonies
Group 2 - beta hemo col, bacitracin resistant or FA negative
Group 3 - beta hemo col, bacitracin sensitive or FA positive
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Hosmer, M., Sprunt, K. & Mellin, G. BACITRACIN DISC SCREENING OF THROAT CULTURES FROM 1976 PEDIATRIC OUTPATIENT POPULATION. Pediatr Res 11, 501 (1977). https://doi.org/10.1203/00006450-197704000-00785
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DOI: https://doi.org/10.1203/00006450-197704000-00785
