Which of the following positive antibody tests may be an indication of recent rubella vaccination or early primary rubella infection in a patient with no clinical symptoms?

Question

Quizplus · Accepted Answer

A positive IgM test indicates recent or current infection, while a positive IgG test alone can indicate past infection or vaccination. A fourfold rise in IgG titer would also suggest recent infection, but this is not mentioned as an option in the question. A positive IgA test alone is not typically used to diagnose rubella infection.

Which of the Following Positive Antibody Tests May Be an Indication