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 MehrotraEsther LimKatherine LambaAmanda KamaliKristina W LaiErika MezaIrvin SzetoPeter RobinsonCheng-Ting TsaiDavid GebhartNoemi FonsecaAndrew B MartinCatherine LeySteve ScherfJames WattDavid SeftelJulie ParsonnetSeema JainPublished in: Open forum infectious diseases (2022)
As of June 2021, one third of adults and most children in California were seronegative. Serostatus varied regionally and by demographic group.