CalScope: Monitoring Severe Acute Respiratory Syndrome Coronavirus 2 Seroprevalence From Vaccination and Prior Infection in Adults and Children in California May 2021-July 2021.

Megha L Mehrotra¹, Esther Lim¹, Katherine Lamba¹, Amanda Kamali¹, Kristina W Lai¹, Erika Meza¹, Irvin Szeto², Peter Robinson³, Cheng-Ting Tsai³, David Gebhart³, Noemi Fonseca³, Andrew B Martin², Catherine Ley², Steve Scherf⁴, James Watt¹, David Seftel³, Julie Parsonnet², Seema Jain¹

¹California Department of Public Health, Epidemiology, Surveillance and Modeling Section, COVID-19 Response, Richmond, California, USA.

²Infectious Diseases, Stanford University, School of Medicine, Palo Alto, California, USA.

³Enable Biosciences, South San Francisco, California, USA.

⁴Gauss Surgical, Menlo Park, California, USA.

PubMed PMC DOI PDF

Abstract

BACKGROUND: Understanding the distribution of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies from vaccination and/or prior infection is critical to the public health response to the pandemic. CalScope is a population-based serosurvey in 7 counties in California. METHODS: We invited 200 000 randomly sampled households to enroll up to 1 adult and 1 child between April 20, 2…

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