SARS-CoV-2 Positivity and Mask Utilization Among Health Care Workers

JAMA Netw Open. 2021 Jun 1;4(6):e2114325. doi: 10.1001/jamanetworkopen.2021.14325.

Aldon Li^{1

2}, Jeff Slezak³, Ana Miranda Maldonado¹, June Concepcion⁴, Catherine Voloso Maier⁴, Gunter Rieg^{1

5

6}

¹ Permanente Medicine, Southern California Permanente Medical Group, Pasadena.
² University of California, Riverside School of Medicine, Riverside.
³ Kaiser Permanente Department of Research and Evaluation, Pasadena, California.
⁴ Kaiser Permanente Southern California, Pasadena.
⁵ Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, California.
⁶ David Geffen School of Medicine at UCLA, Los Angeles, California.

Abstract

This cohort study examines the association of mask use with COVID-19 transmission among health care workers in California.