Hepatitis B infectivity is indicated by:
Correct Answer: HBsAg + HBeAg
Description: Answer is B (HBs Ag + HBe Ag) HBe Ag: Its principal clinical usefulness is an indicator of relative infectivity - Harrison HBs Ag: Its presence in serum indicates infection /pervious vaccination with hepatitis B virus. HBs Ag Anti- HBsAg Anti Hbe HBe Ag Anti-Hbe Acute HBV infection High infectivit - IgM + - Chronic HBV infection High infectivity + - IgG + - Thus, the presence of the above two markers indicate an infection with hepatitis B virus and high infectivity. Q Whether the infection is acute or chronic can, however, only be commented if status of anti-HBe marker is dear.
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