USMLE Step 1 - Question 42

A 28 year old female with no prior past medical history becomes markedly short of breath and hypotensive over a 3 day time period. She had been suffering from an upper respiratory tract infection starting 1 week prior. Physical examination reveals no murmurs, an S3 heart sound is present, elevated jugular venous pressure, pulmonary rales, and lower extremity edema. An echocardiogram confirms an ejection fraction of 10%. Which of the following is the most common culprit of her condition?

A. Coxsackie B virus

B. Human immunodeficiency virus

C. Epstein-Barr virus

D. Influenza A virus