GREENSBORO, N.C. — If you're going to wear a mask, you want to make sure it really protects you. Health experts say one of these masks is far better at protecting you than the other. To show you why ...
An Indian American-led research team at U.C. San Diego reports that if you are going to buy a face mask to protect yourself and others from COVID-19, make sure it’s a three-layered mask. The Abhishek ...
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