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

Li, Aldon; Slezak, Jeff; Maldonado, Ana Miranda; Concepcion, June; Maier, Catherine Voloso; Rieg, Gunter · JAMA Netw Open · 2021

prospective_cohort · Level II

Where this comes from

Abstract

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

Medical subject headings