from FOX News https://ift.tt/3fXxHOz
Homemade coronavirus face masks should be two or three layers to stop spread of virus, study finds
Homemade cloth face masks of two or three layers are more effective against coronavirus, according to researchers in Australia.
from FOX News https://ift.tt/3fXxHOz
from FOX News https://ift.tt/3fXxHOz
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