Which statement best describes a pattern consistent with a recent CMV infection when CMV IgM is positive and CMV IgG is present?

Which statement best describes a pattern consistent with a recent CMV infection when CMV IgM is positive and CMV IgG is present?

• A. EBV infection
• B. Acute CMV infection
• C. Past CMV infection
• D. Toxoplasma infection

Answer: (B)

IgM signal means a recent or active CMV infection, while IgG shows prior exposure and immune memory. When both CMV IgM and CMV IgG are present, it most commonly indicates a recent CMV infection in a person who has been previously exposed to CMV. This pattern aligns with acute CMV infection, rather than a past infection (which would lack IgM) or other infections with different serology patterns.

IgM signal means a recent or active CMV infection, while IgG shows prior exposure and immune memory. When both CMV IgM and CMV IgG are present, it most commonly indicates a recent CMV infection in a person who has been previously exposed to CMV. This pattern aligns with acute CMV infection, rather than a past infection (which would lack IgM) or other infections with different serology patterns.