COVID-19 antibody seroprevalence in Santa Clara County, California.
Eran BendavidBianca MulaneyNeeraj SoodSoleil ShahRebecca Bromley-DulfanoCara LaiZoe WeissbergRodrigo Saavedra-WalkerJim TedrowAndrew BoganThomas KupiecDaniel EichnerRibhav GuptaJohn P A IoannidisJay BhattacharyaPublished in: International journal of epidemiology (2021)
The estimated prevalence of SARS-CoV-2 antibodies in Santa Clara County implies that COVID-19 was likely more widespread than indicated by the number of cases in late March, 2020. At the time, low-burden contexts such as Santa Clara County were far from herd-immunity thresholds.