[Epidemiology of streptococcal infection with special reference to scarlet fever].
D002353:Carrier State / Q000382:microbiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011247:Pregnancy; D011645:Puerperal Infection / Q000401:mortality; D012541:Scarlet Fever / Q000453:epidemiology* / Q000382:microbiology; D013291:Streptococcus / Q000302:isolation & purification