[an epidemiological study of group a, b, c, and g hemolytic streptococci isolated from elementary school children in the recent 12 years. part i. isolation trends. streptococcal diseases study group].during a 12-years period between september, 1980 and november, 1992, hemolytic streptococci (group a, b, c, & g) in throats of healthy school children in osaka were examined every other month. the results were summarized as follows. 1. 5,023 strains of hemolytic streptococci were detected from 11,647 specimens, 43.1%. among them, 2,395 strains (20.6%) belonged to group a, 1,647 (14.4%) to group b, 767 (6.6%) to group g and 187 (1.6%) to group c. 2. in the first half of the research, group a stre ...19948207294
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