NBC News suggested Tuesday that kids should double mask as students return to school after winter vacation and the country grapples with the rise of the omicron coronavirus variant. "I actually just ...

Over the past several weeks, questions and suggestions have been raised over the potential benefit that comes with wearing three face masks — or masks made with three layers of fabric instead of one ...

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. You might have already heard this recommendation, but researchers have now found ...