A 3-month-old boy is brought to the clinic by his mother ...

A 10- year-old girl is brought to the clinic because of a 2-day history of a sore throat and fever. The mother reports that the fever has been as high as 39 C (102.2 F) and that the child is complaining of pain on swallowing. She has had no rhinorrhea, cough, or ear pain, and no one else is ill at home. ................
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