Variable epidemiology of streptococcal disease and the changing pattern of rheumatic fever.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D012213:Rheumatic Fever / Q000209:etiology*; D013290:Streptococcal Infections / Q000453:epidemiology*; D013291:Streptococcus / Q000472:pathogenicity; D014774:Virulence