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Matt Hitchings, Assistant Professor of Biostatistics, University of Florida

96.4% of Americans had COVID-19 antibodies in their blood by fall 2022

Covid-19 United States CDC
Infection and vaccination both leave their mark in your blood. Yulia Reznikov/Moment via Getty Images
graphic of text '96.4%: Share of Americans who had coronavirus antibodies in their blood by September 2022.'
CC BY-ND

Antibodies to SARS-CoV-2, the virus that causes COVID-19, were present in the blood of 96.4% of Americans over the age of 16 by September 2022. That’s according to a serosurvey – an analysis testing for the presence of these immune defense molecules – conducted on samples from blood donors.

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