Viral Infections USMLE Step 1 Practice Question
A 19-year-old unvaccinated college student presents with fever (38.8°C), malaise, and bilateral parotid swelling. Two days later, he develops left testicular pain and swelling. Vital signs show HR 102 bpm, RR 18, SpO2 98% on room air. Serum amylase is elevated at 185 U/L. He denies recent antibiotic use. Mumps IgM antibody is positive. Which organism is the most likely causal pathogen?
Answer choices
- ARubella virus
- BMumps virusCorrect answer
- CHerpes simplex virus 2
- DInfluenza A virus
- EMeasles virus
- FEpstein-Barr virus
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