Quote:
Originally Posted by johnny d
Wearing a mask is pretty much useless. The coronavirus has a diameter somewhere between 60-140 nanometers. .
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Surgical masks are not stopping the tiny corona virus particles, they're stopping the larger diameter respiratory droplets (that contain tremendous numbers of the much smaller diameter corona virus) from being exhaled or spit out by those that have COVID-19, especially from those that are asymptomatic for COVID-19 and who don't know that they're sick (and may not be socially distancing, or can't socially distance, like at work).
A mask, be it a surgical mask, or an N-95 mask, doesn't have to be 100% effective to be better than no mask at all.
I'm sure that many of us have seen slow motion video of respiratory droplets been coughed or sneezed out of one's nose or mouth and how far they can travel.
How are surgical masks useless?