[Group A hemolytic Streptococci detected in Nemuro, Hokkaido--changes in types and variations in sensitivity to drugs over a period of approximately seven years].
D002648:Child; D004352:Drug Resistance, Microbial; D006801:Humans; D007564:Japan; D010614:Pharynx / Q000382:microbiology; D012141:Respiratory Tract Infections / Q000382:microbiology; D013290:Streptococcal Infections / Q000382:microbiology; D013297:Streptococcus pyogenes / Q000187:drug effects* / Q000302:isolation & purification