Hemolytic streptococcus otitis media.
D002648:Child; D006801:Humans; D007223:Infant; D010033:Otitis Media / Q000209:etiology*; D013290:Streptococcal Infections; D013291:Streptococcus
OTITIS MEDIA/etiology and pathogenesis; STREPTOCOCCAL INFECTIONS/in infant and child