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?
- A)Epstein Barr virus
- B)Hepatitis B virusGABARITO
- C)Hepatitis C virus
- D)Human immunodeficiency virus
- E)Cytomegalovirus
Explicação
Hepatitis B virus is correct. Isolated anti HBc IgM positivity with absent surface antigen is the classic serologic pattern of the window period of acute hepatitis B infection. The needlestick exposure and acute hepatitis syndrome support HBV rather than anoth... Ver explicação completa e trilha adaptativa →