Anything you put over your face will help - The question is how effective does it have to be to be worth it? - When you are talking hundreds of millions of people it all counts - 0.5% or 50% or 100%...
Quick math - If it is just 0.5% and the survival rate is 99.8% the lives saved in the US alone would be approx 4,000 - That's with 2 in a 1000 dying.....
More deaths than 9/11...
That's if masks help by just half of one percent!....
EDIT: I rounded figures up and down - It's approx.....
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