title: Distribution of groups and types of beta haemolytic streptococci in cases of rheumatic heart disease and apparently healthy school children.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D010401:Penicillin G Benzathine / Q000627:therapeutic use; D010614:Pharynx / Q000382:microbiology; D012214:Rheumatic Heart Disease / Q000188:drug therapy / Q000382:microbiology*; D012703:Serotyping; D013291:Streptococcus / Q000302:isolation & purification*
chemical_list: D010401:Penicillin G Benzathine