Which antibody indicates a recent hepatitis B infection?

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Multiple Choice

Which antibody indicates a recent hepatitis B infection?

Explanation:
A recent hepatitis B infection is most clearly indicated by IgM antibodies. When the immune system first encounters HBV, it mounts an IgM response to the core antigen (IgM anti-HBc), which appears early and is transient, signaling a recent or acute infection (typically within the past few months). In contrast, IgG anti-HBc shows up later and persists, indicating past exposure or chronic infection, not an active recent infection. HBsAg can be present during both acute and chronic infection but does not distinguish recent from ongoing infection, and anti-HBe relates to infectivity and seroconversion rather than timing. So the presence of IgM reflects a recent HBV infection.

A recent hepatitis B infection is most clearly indicated by IgM antibodies. When the immune system first encounters HBV, it mounts an IgM response to the core antigen (IgM anti-HBc), which appears early and is transient, signaling a recent or acute infection (typically within the past few months). In contrast, IgG anti-HBc shows up later and persists, indicating past exposure or chronic infection, not an active recent infection. HBsAg can be present during both acute and chronic infection but does not distinguish recent from ongoing infection, and anti-HBe relates to infectivity and seroconversion rather than timing. So the presence of IgM reflects a recent HBV infection.

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