[Study on the distribution of various types of group A hemolytic streptococcus. Annual changes and regional difference in distribution of group A streptococci isolated from scarlet fever patients from April 1969 to March 1973].
D006801:Humans; D007564:Japan; D012541:Scarlet Fever / Q000453:epidemiology / Q000382:microbiology*; D013297:Streptococcus pyogenes / Q000302:isolation & purification*