Maximizing Fit for Cloth and Medical Procedure Masks to Improve Performance and Reduce SARS-CoV-2 Transmission and Exposure, 2021

This report describes experiments conducted by CDC to assess two ways of improving the fit of medical procedure masks.

Masks to prevent COVID-19 – East Bay Getting to Zero

Safety & Efficacy of Masks & Face Coverings During Exercise

Maximizing Fit for Cloth and Medical Procedure Masks to Improve Performance and Reduce SARS-CoV-2 Transmission and Exposure, 2021

Wearing Two Masks Can Better Protect You From COVID-19

Face masks during the COVID-19 pandemic - Wikipedia

Effectiveness of different types of mask in aerosol dispersion in SARS-CoV-2 infection - ScienceDirect

COVID-19 false dichotomies and a comprehensive review of the evidence regarding public health, COVID-19 symptomatology, SARS-CoV-2 transmission, mask wearing, and reinfection, BMC Infectious Diseases

Maximizing Fit for Cloth and Medical Procedure Masks to Improve Performance and Reduce SARS-CoV-2 Transmission and Exposure, 2021

Outward and inward protections of different mask designs for different respiratory activities

Fabrication of a highly protective 3D-printed mask and evaluation of its viral filtration efficiency using a human head mannequin - ScienceDirect

Masks and Respirators

Do Fully Vaccinated People Still Need to Wear Masks?

MASK definition in American English

Wear a Mask Library of Congress

Doubling up on masks adds to obstacle course for COVID particles, research shows - CBS News