Effectiveness of Face Mask or Respirator Use in Indoor Public Settings for Prevention of SARS-CoV-2 Infection — California, February–December 2021

This report describes face mask or respirator effectiveness in helping protect against COVID-19 infection.

PDF) Association between Face mask use and Risk of SARS-CoV-2

COVID-19 transmission in U.S. transit buses: A scenario-based

SciELO - Brasil - Effectiveness of wearing masks during the COVID

COMMENTARY: Wear a respirator, not a cloth or surgical mask, to

Resources for Health Professionals

Impact of Community Masking on SARS-CoV-2 Transmission in Ontario

Waning of two-dose BNT162b2 and mRNA-1273 vaccine effectiveness

COMMENTARY: Wear a respirator, not a cloth or surgical mask, to

Antigen Test Positivity After COVID-19 Isolation — Yukon-Kuskokwim

Community exposures among Colorado adults who tested positive for

SciELO - Brasil - Effectiveness of wearing masks during the COVID

Shielding under endemic SARS-CoV-2 conditions is easier said than

Pulmonary function testing during SARS‐CoV‐2: An ANZSRS/TSANZ

COMMENTARY: Wear a respirator, not a cloth or surgical mask, to