Serology is performed on a patient with a rash and fever.Results are: rubella IgM = positive; rubella IgG = positive; measles IgM = negative; measles IgG = positive; varicella-zoster IgM = negative; varicella-zoster IgG = negative.What is the interpretation of these results?

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The positive rubella IgM and IgG results indicate an acute infection with rubella virus. The negative varicella-zoster IgM and IgG results suggest the patient is not currently infected with or immune to varicella-zoster virus. The negative measles IgM result rules out an acute infection with measles virus, but the positive measles IgG result suggests immunity to measles virus.

Serology Is Performed on a Patient with a Rash and Fever.Results