A member asked:

I got a hep a total test result back positive -high so i know i have antibodies to help a. . how do i know if this is from the vaccine or a current/recent breakthrough infection?

A doctor has provided 1 answer
Dr. Deborah Ungerleider answered

Specializes in Pediatrics

This can only be differentiated if you had both a total anti-HAV test and IgM test.The total is positive with both past infection or vaccination; the IgM is positive with current infection, recent infection, or recent vaccine. See this link for a chart with the different possibilities:https://www.cdc.gov/hepatitis/statistics/surveillanceguidance/docs/viral-hepatitis-surveillance-table-2-1_508.pdf

Answered 7/26/2023

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