Temporal Trends in COVID-19 Incidence in Two Healthcare Worker Cohorts

J Occup Environ Med. 2021 Jun 1;63(6):528-531. doi: 10.1097/JOM.0000000000002208.

Abstract

Background: Health care workers (HCWs) experience increased occupational risk of contracting COVID-19, with temporal trends that might inform surveillance.

Methods: We analyzed data from a Veterans Affairs hospital-based COVID-19 worker telephone hotline collected over 40 weeks (2020). We calculated the proportion of COVID-19+ cases among persons-under-investigation (PUIs) for illness compared to rates from a nearby large university-based health care institution.

Results: We observed 740 PUIs, 65 (8.8%) COVID-19+. Time trends were similar at the study and comparison hospitals; only for the first of 10 four-week observation periods was the ratio for observed to expected COVID-19+ significant (P < 0.001).

Discussion: These data suggest that employee health COVID-19+ to PUI ratios could be utilized as a barometer of community trends. Pooling experience among heath care facilities may yield insights into occupational infectious disease outbreaks.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • COVID-19 / diagnosis
  • COVID-19 / epidemiology*
  • Cohort Studies
  • Health Personnel / statistics & numerical data*
  • Hospitals, University
  • Hospitals, Veterans
  • Humans
  • Incidence
  • Occupational Exposure / statistics & numerical data*
  • Occupational Health / statistics & numerical data
  • SARS-CoV-2 / isolation & purification
  • San Francisco / epidemiology
  • Sentinel Surveillance