HY USMLE Q #1362 – Pulmonary

A 39-year-old woman at 31 weeks’ gestation comes to the physician for a 2-day history of fever and dry cough. She emigrated from Bali to the United States 7 years ago. She has not had any antenatal screening or appointments. Temperature is 102 F. A chest x-ray is shown and demonstrates bilateral ground-glass opacities. A DNA virus is suspected. Which of the following is the most likely cause of this patient’s acute presentation?