title: A controlled study of penicillin prophylaxis against streptococcal impetigo.
mesh_terms: D000293:Adolescent; D001431:Bacteriological Techniques; D002648:Child; D002675:Child, Preschool; D002986:Clinical Trials as Topic; D004812:Epidemiologic Methods; D006801:Humans; D007169:Impetigo / Q000382:microbiology / Q000517:prevention & control*; D007223:Infant; D009297:Nasal Mucosa / Q000382:microbiology; D010400:Penicillin G / Q000008:administration & dosage / Q000627:therapeutic use*; D010614:Pharynx / Q000382:microbiology; D010919:Placebos; D012703:Serotyping; D012867:Skin / Q000382:microbiology; D013291:Streptococcus / Q000302:isolation & purification
chemical_list: D010919:Placebos; D010400:Penicillin G