In acute parvovirus B19 infection, anti-IgM titers are what?

In acute parvovirus B19 infection, anti-IgM titers are what?

• A. Low
• B. High
• C. Moderate
• D. Undetectable

Answer: (B)

In an acute parvovirus B19 infection, the body mounts a rapid initial antibody response, so the anti-parvovirus B19 IgM antibodies rise quickly and are high during the acute phase. IgM is the first antibody type produced in a primary immune response, signalling a recent infection. As the illness resolves, IgM levels fall while IgG antibodies rise and persist, indicating past exposure or immunity rather than current infection.

In an acute parvovirus B19 infection, the body mounts a rapid initial antibody response, so the anti-parvovirus B19 IgM antibodies rise quickly and are high during the acute phase. IgM is the first antibody type produced in a primary immune response, signalling a recent infection. As the illness resolves, IgM levels fall while IgG antibodies rise and persist, indicating past exposure or immunity rather than current infection.