Fig. 2From: Risk factors for SARS-CoV-2 seropositivity in a health care worker population during the early pandemicEpidemiologic context of HCW study with respect to community prevalence and hospital burden of COVID-19. This study was performed between May 15th to June 30th, 2020 (top graph), a period in which total cases in Orange County were on a rise (bottom graph). Key events for the University Hospital system are outlined in the bottomBack to article page