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

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

Universal Mask and Cloth Face Covering Precautions

A technical review of face mask wearing in preventing respiratory COVID-19 transmission - ScienceDirect

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

PDF) Effectiveness of different types of Masks in Aerosol Dispersion in SARS–CoV-2 Infection

Federal Register :: COVID-19 Vaccination and Testing; Emergency

One Year with COVID: Lessons Learned

Performance Comparison of Single and Double Masks: Filtration Efficiencies, Breathing Resistance and CO2 Content

The path of humanity in the pandemic of COVID-19: the choice of the realistic, optimist or pessimist scenario

Epidemiologia, Free Full-Text