1. Peter Ringo Peter Ringo United States says:

    I'm not sure that's true. I seem to remember a study with mice and one with hairdressers, both involving the virus, but I could be wrong. At any rate, even if the mask material being tested partially blocks the virus, the issues are whether the mask is sealed, cleaned, switched out, and used properly in other ways--none of which practices are commonly followed by the general public.

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