University Of Waterloo: Blue Surgical Face Masks Are Only 10% Effective In Preventing COVID Infection, New Study Finds

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University Of Waterloo: Blue Surgical Face Masks Are Only 10% Effective In Preventing COVID Infection, New Study Finds

The above is my version of title by Ronny Reyes at The Daily Mail.

N95 masks squeeze the face and are very uncomfortable. Plus, they cut off spaces where the wearer can get air, so that he/she is breathing more of their own CO2.