Uninfected adults show preexisting antibody reactivity against SARS-CoV-2
The main objective of this study was to estimate the extent of the preexisting seroreactivity against SARS-CoV-2 in the general adult population and to confirm that SARS-CoV-2 antibody reactivity in uninfected adults was cross-reactive and not due to widespread, asymptomatic SARS-CoV-2 circulation.