Best Facemask Materials – April 9, 2020

Tara Parker-Pope reported in the NY Times on studies being conducted to determine the mask material which provides the best protection from COVID-19.  They are trying to find the best compromise between viral filtration rates and breathability. Most masks block outgoing germs when coughing, but some only filter out 1% of the germs exhaled by unmasked people around you.  The best performers, a double layer of quilter’s cotton or an inner layer of flannel and an outer layer of high thread count woven cotton, were as good as surgical masks with a filtration rate over 70%.  Read the NY Times article for more information on mask material studies: