Review Question - QID 108959

A 14-year-old male presents to his pediatrician complaining of a sore throat. His mother reports that he developed a fever two days ago that was immediately followed by a sore throat. He denies cough or rhinorrhea. His past medical history is notable for poorly controlled asthma and he currently takes albuterol and budesonide. Of note, the child immigrated to America from Vietnam three months ago. His temperature is 101.6°F (38.7°C), blood pressure is 130/85 mmHg, pulse is 110/min, and respirations are 18/min. Physical examination reveals a malnourished adolescent who is small for his age. No hepatosplenomegaly is noted. A notable physical examination finding is shown in Figure A. Serologic and throat swab studies are pending. Without appropriate treatment, this patient is at greatest risk for which of the following?