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em@3am

EM@3AM: Infectious Mononucleosis

A 17-year-old male with history of asthma presents to the ED with a chief complaint of sore throat for the past 3 days, associated with decreased oral intake. He denies sick contacts. Vital signs include Temp 100.6F, BP 124/78, HR 92, RR 16, 96% on RA. On exam the patient has swollen, erythematous tonsils with grayish exudate, as well as enlarged, tender anterior and posterior cervical chain lymph nodes. What is the most likely diagnosis?