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Originally Posted by Topspinmo
Well????? IMO there no actual proof the napkin mask actually prevent anything. They may reduce odds in certain situations which IMO better than nothing. Now n95 or better mask if worn properly probably does better job. Other countries have more control and restrictions than USA, some are isolated with lot less population so there effectiveness is higher. China actually locked people in there apartments for Months. In free world that would never happen. Utube NTD china in focus.
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Oh my. I have posted many videos of how home made and store bought surgical masks are very effective for source control. Have you not seen any videos which demonstrate the usefullness of Universal masking? Been there. Done that. Not going to post any more. It is up to you to do the research now. Have fun watching those infra red cameras spelling it out for your eyes to see.
Good luck!