Effectiveness of Face Mask or Respirator Use in Indoor Public

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

Commentary: In Mask Debate, Social Distancing Remains Priority, School of Public Health

Efficacy of masks and face coverings in controlling outward aerosol particle emission from expiratory activities

Explainer: N95? KF94? Which mask is best at protecting against COVID-19

It's time to refresh your mask supply

N95, KN95 masks provide best protection against covid, CDC study shows - The Washington Post

13 Best Face Masks We Actually Like to Wear (2023)

Effect of Wearing Face Masks on the Carbon Dioxide Concentration in the Breathing Zone - Aerosol and Air Quality Research

Respirator - Wikipedia

Protective face mask: an effective weapon against SARS-CoV-2 with controlled environmental pollution

How well do face masks protect against COVID-19? - Mayo Clinic

Medical Workers Should Use Respirator Masks, Not Surgical Masks - The New York Times