Viral Infections USMLE Step 1 Practice Question
A 28-year-old previously healthy woman presents with fever, severe headache, neck stiffness, and confusion for 24 hours. CSF analysis shows lymphocytic pleocytosis with normal glucose and protein. PCR of CSF is negative for common bacterial pathogens and HSV-1/HSV-2. MRI brain shows no abnormalities. Which of the following viral pathogens is most likely responsible?
Answer choices
- AWest Nile virus
- BEnterovirusCorrect answer
- CCytomegalovirus
- DVaricella-zoster virus
- EMumps virus
- FRespiratory syncytial virus
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