UVA Health study tracks COVID antibodies over time

Published: Apr. 14, 2022 at 10:55 PM EDT
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CHARLOTTESVILLE, Va. (WVIR) - A new UVA Health study shows antibodies generated by Pfizer’s COVID-19 vaccine rise more slowly and decline more quickly than Moderna’s.

More than 200 UVA employees were tracked over a period of ten months after their vaccinations. Six months after their second doses, Pfizer recipients had antibody levels lower than Moderna recipients.

“If you look at a really tight time window after you get the second vaccine, it looks like the antibody levels reach equal levels, basically, between Pfizer and Moderna. But when we look carefully, what we found is that the antibody levels dropped faster in those who got Pfizer,” said UVA Health’s Dr. Jeffrey Wilson.

In the future, Dr. Wilson hopes to conduct another study looking at antibodies in booster shots or third doses.

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