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.

View of Effectiveness of manufactured surgical masks, respirators, and home-made masks in prevention of respiratory infection due to airborne microorganisms

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Reusability Comparison of Melt-Blown vs Nanofiber Face Mask Filters for Use in the Coronavirus Pandemic

Bacterial and fungal isolation from face masks under the COVID-19 pandemic

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

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