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This study investigated the seroprevalence of COVID-19 antibody positivity among 40,329 healthcare providers from a healthcare system in New York City that offered voluntary antibody testing to all employees from April 20 to June 23, 2020. The overall seroprevalence was 13.7%, which was similar to the 14% seroprevalence seen among randomly tested adults in New York State. Working in a COVID-19 unit or intensive care unit was not associated with increased risk of seropositivity in multivariable analyses; previously positive COVID-19 PCR and reported high suspicion of virus exposure were associated with increased risk of antibody positivity.
This study suggests that, among healthcare personnel in a New York City healthcare system, there was not increased prevalence of COVID-19 antibody positivity compared with the general population, although the prevalence was higher among those with high suspicion of virus exposure. The findings in this study are limited by participation-related factors, and further study of nosocomial COVID-19 transmission is important to inform future efforts aimed at infection control.
– Amy S. Korwin, MD
This abstract is available on the publisher's site.
The greater New York City (NYC) area, including the 5 boroughs and surrounding counties, has a high incidence of coronavirus disease 2019 (COVID-19), and health care personnel (HCP) working there have a high exposure risk. HCP have expressed concerns about access to testing so that infection spread to patients, other HCP, and their families can be minimized. The Northwell Health System, the largest in New York State, sought to address this concern by offering voluntary antibody testing to all HCP. We investigated the prevalence of antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among HCP and associations with demographics, primary work location and type, and suspicion of virus exposure.