Seroprevalence of Antibodies to SARS-CoV-2 in 10 Sites in the United States, March 23-May 12, 2020

Detection of antibodies to SARS-CoV-2 in a person’s blood likely indicates that they were infected at some point since the start of the pandemic. Thus, serologic assays can be used to provide population-based estimates of infection that include people who had mild or asymptomatic infection or who were never tested despite having symptoms.

SeroprevalenceofAntibodiestoSARS-CoV-2in10Sites intheUnitedStates,March23-May12,2020
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