Quote:
Originally Posted by sexobon
Your references are vague. The accounting was for many types of masks, not just those effective against the virus.
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All masks are effective. Some more than others. Claims or denials say nothing useful without numbers. Even a cloth bandanna is will block 50% of a virus. Other masks will do 70% or 80%. The N95 masks only do 95%.
All masks are effective. Even covering a face with a hand does something useful. Some solutions are more or less effective than others. Any mask is better than none.