Viral Infections USMLE Step 1 Practice Question
A 30-year-old surgical resident sustains a needlestick injury from a patient with acute hepatitis. Six weeks later, she presents with malaise, right upper quadrant discomfort, and jaundice. Vital signs show temperature 38.2°C, HR 88/min, BP 118/76 mmHg. Laboratory studies reveal elevated ALT (840 U/L), positive anti-HBc IgM, negative HBsAg, and negative anti-HBs. Abdominal ultrasound shows no gallstones. Which of the following is the most likely causal organism?
Answer choices
- AEpstein Barr virus
- BHepatitis B virusCorrect answer
- CHepatitis C virus
- DHuman immunodeficiency virus
- ECytomegalovirus
- FHepatitis A virus
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