USMLE® Step 1 style questions USMLE
USMLE® Step 2 style questions USMLE
A previously healthy one-month-old infant is admitted to the hospital because of respiratory distress. He was born at term following an uncomplicated pregnancy and delivery. He had been well until 2 days ago when he developed fever and malaise. His pulse is 162/min, respirations are 54/min, and blood pressure is 64/48 mm Hg. Examination shows evidence of heart failure. A viral infection is suspected as the etiology of his acute heart failure. Which of the following is the most likely causal virus?