Streptococcal sore throat.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D044383:Black People; D002648:Child; D002675:Child, Preschool; D006801:Humans; D010612:Pharyngitis / Q000382:microbiology*; D013019:South Africa; D013290:Streptococcal Infections / Q000453:epidemiology*; D013292:Streptococcus agalactiae / Q000302:isolation & purification