Face Mask Research Links
All research gathered by JenniferMaker, the designer of the pattern I use.
Cambridge University Study in Smart Air article: What Are the Best Materials for Making DIY Masks?
CDC: Improve the Fit and Filtration of Your Mask to Reduce the Spread of COVID-19
Wake Forest Baptist Medical Center: Testing Shows Type of Cloth Used in Homemade Masks Makes a Difference, Doctors Say