title: The movement of streptococcal infection in Otsu City.
abstract: The throat cultures were collected on swabs from total number of 3,599 of first grade children of elementary schools in Otsu City in 1978. Beta-hemolytic streptococci were isolated from 628 of 3,599 children (17.4%). Group A strains were found in 403 of 628 children (64.2%). Thus the frequency of recovery of group A streptococci from the children was 11.2% in this study. The size of tonsils in children with positive cultures for group A streptococci and negative response of ASO was larger than tonsils of children with negative cultures for group a strains and negative ASO response, and were smaller than the tonsils of children with positive cultures for group A strains and with positive ASO response. On the 20th day after oral administration of 400,000 units of penicillin derivative, group A strains were eradicated from throats in 76.2% of the treated children.
mesh_terms: D000989:Antistreptolysin / Q000032:analysis; D002648:Child; D006801:Humans; D007564:Japan; D014066:Palatine Tonsil / Q000382:microbiology; D010406:Penicillins / Q000627:therapeutic use; D013290:Streptococcal Infections / Q000188:drug therapy / Q000453:epidemiology*; D013291:Streptococcus / Q000302:isolation & purification
chemical_list: D010406:Penicillins; D000989:Antistreptolysin