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?

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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.

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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.

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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.

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

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