Study raises questions about efficacy of gaiters, bandanas, knit masks in stopping spread of virus – The Boston Globe

Study raises questions about efficacy of gaiters, bandanas, knit masks in stopping spread of virus – The Boston Globe

He said a general rule of thumb is: If you have a mask and you can see through it in the light and you can blow through it, its probably not a very good mask. A knitted mask also performed poorly in …
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