New study investigates California’s possible herd immunity to COVID-19

KSBW.COM

Researchers at Stanford Medicine are working to find out what proportion of Californians have already had COVID-19. The new study could help policymakers make more informed decisions during the coronavirus pandemic. The team tested 3,200 people at three Bay Area locations on Saturday using an antibody test for COVID-19 and expect to release results in the coming weeks. The data could help to prove COVID-19 arrived undetected in California much earlier than previously thought. The hypothesis that COVID-19 first started spreading in California in the fall of 2019 is one explanation for the state’s lower than expected case numbers. As of Tuesday, the state had 374 reported COVID-19 fatalities in a state of 40 million people, compared to New York which has seen 14 times as many fatalities and has a population half that of California. Social distancing could be playing a role but New York’s stay-at-home order went into effect on March 22, three days after California implemented its order.

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