Viral Infections USMLE Step 1 Practice Question
A 6-day-old male newborn presents with poor feeding, seizures, and disseminated vesicular rash. Vital signs show temperature 38.2°C, heart rate 156/min, respiratory rate 48/min, and SpO2 94% on room air. Blood pressure is normal. Cerebrospinal fluid shows elevated protein (120 mg/dL) and lymphocytic pleocytosis. He was delivered vaginally after prolonged membrane rupture. His mother reports painful genital ulcers during labor but denies prior antiviral prophylaxis. Which organism is most likely responsible?
Answer choices
- ACytomegalovirus
- BHerpes simplex virus 1
- CHuman herpesvirus 6
- DHerpes simplex virus 2Correct answer
- EVaricella zoster virus
- FEnterovirus
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