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 and Respirators

Cloth face mask fit and function for children part one: design exploration, Fashion and Textiles

Masking during the COVID-19 pandemic – An update of the evidence, National Collaborating Centre for Environmental Health

What doctors wish patients knew about double masking, Does double masking help

Universal Mask and Cloth Face Covering Precautions

Metodología para evaluar el nivel de protección respiratoria de mascarillas y respiradores ante partículas similares a las que transmiten el SARS-CoV-2

Effect of Double Masking with Silk or Cotton Over-masks on the Source Control Capabilities of a Surgical Mask - Aerosol and Air Quality Research

Evaluation of Different Types of Face Masks to Limit the Spread of SARS-CoV- 2 – A Modeling Study

CDC Microsite - Coronavirus Disease 2019

Filtration efficiency of makeshift material masks vs . surgical/procedure masks and/or filtering facepiece respirators: a narrative review - Louie - Journal of Public Health and Emergency

Abraar Karan on X: 1/ Here is official @CDCgov @CDCMMWR report out today They assessed various modifications incl: •wearing a cloth mask over a medical procedure mask (double masking) •knotting the ear

Effect of Wearing a Face Mask on the 6-Minute Walk Test in Healthy Volunteers

Safety & Efficacy of Masks & Face Coverings During Exercise