[An epidemiological study on group A streptococci in two towns with high and low incidence rates of scarlet fever].
D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D012541:Scarlet Fever / Q000453:epidemiology*; D012621:Seasons; D013290:Streptococcal Infections / Q000453:epidemiology*; D013297:Streptococcus pyogenes / Q000302:isolation & purification