【单选题】An 11-year-old boy had a sore throat, no cough, tonsil- lar exudates, and 38.30 C fever 3 weeks ago, and a throat cul- ture was positive for group A B-hemolytic Streptococcus. On the follow-up examina...
【单选题】An 11-year-old boy had a sore throat, no cough, tonsillar exudates, and 38.3° C fever 3 weeks ago, and a throat culture was positive for group A β -hemolytic Streptococcus . On the follow-up examinati...