What The Study Did: Based on a sample of blood donations in the United States from July 2020 through May 2021, vaccine- and infection-induced SARS-CoV-2 seroprevalence increased over time and varied by age, race and ethnicity, and geographic region. Seroprevalence studies estimate how common it is for people to have SARS-CoV-2–specific antibodies due to natural infection or induced by vaccination.
Authors: Jefferson M. Jones, M.D., M.P.H., C.D.R., of the Centers for Disease Control and Prevention in Atlanta, is the corresponding author.
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(doi:10.1001/jama.2021.15161)
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