Streptococcal infections. Masking by oral prophylaxis with penicillin.
D000284:Administration, Oral; D000293:Adolescent; D000989:Antistreptolysin / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D008297:Male; D010406:Penicillins / Q000008:administration & dosage / Q000627:therapeutic use*; D010614:Pharynx / Q000382:microbiology*; D012213:Rheumatic Fever / Q000517:prevention & control; D013290:Streptococcal Infections / Q000175:diagnosis* / Q000517:prevention & control; D013291:Streptococcus / Q000302:isolation & purification*
D010406:Penicillins; D000989:Antistreptolysin