Strep throat.
D000293:Adolescent; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D010612:Pharyngitis / Q000175:diagnosis / Q000382:microbiology*; D010808:Physical Examination; D013290:Streptococcal Infections / Q000175:diagnosis*; D013297:Streptococcus pyogenes / Q000302:isolation & purification