Some countries have made medical-grade masks mandatory in public.
And the Centers for Disease Control and Prevention says thatonly healthcare workersshould be wearing medical-grade masks.
So what is the correct mask to wear in 2021?

The answer might be more than one, according to epidemiologists.
[Theres] still a constraint on the supply of N95s.
Its not as bad as it was, but it still exists as a bottleneck.

Anthony Harris, MD, MPH, is the associate medical director for WorkCare.
Its Amazing How Its All Connected.
Why is the science changing?
Heres the answer:
Multiple layers of fabric are likely to provide better protection than a single layer does.

Single-layer masks are easy to find and it is easy to double them up, says Dr. Labus.
Wearing two masks can also help prolong the longevity of a medical-grade mask.
When shopping for an N95, be sure to check that its a certified mask.

it’s possible for you to find the CDCs approved list of N95shere.
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