Opinion: Double masking is our secret weapon against Delta
Another simple yet equally effective change is to wear a single surgical mask, but toDouble-masking and knot-and-tuck both help to seal the side gap in surgical masks that otherwise allows virus particles direct access to your lungs. COVID-19 is mainly transmitted through aerosolized respiratory particles that can be inhaled through air that travels through the side gaps. Bending the nose wire in your mask also delivers a better seal.
for illustrations of how to knot and tuck or double up to make the masks you have now more effective. Jeremy Howard is a Distinguished Research Scientist at the University of San Francisco and co-founder of fast.ai and #Masks4All
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