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February 15, 2021 Does wearing two masks
provide more protection?
By The Associated Press
Does wearing two masks provide more protection?
It depends, but it’s possible that doubling up could help in
some situations.
The U.S. Centers for Disease Control and Prevention
recommends wearing a cloth mask made with two or more layers,
and ensuring it covers your nose and mouth. The agency says it
should fit snugly so there aren’t any gaps at the sides of your
face.
Wearing just one mask should be enough for most situations,
as long as it fits well and isn’t loose, said Dr. David Hamer,
an infectious disease expert at Boston University.
"Starting out with a good mask to begin with is going to be
key," Hamer said.
Still, some people might want extra protection if they’re at
risk for severe illness if infected or will be in situations
where they expect to be around others for extended periods, such
as on a plane.
One option in scenarios when you want extra protection is to
wear a cloth mask as well as a regular surgical mask, said Dr.
Monica Gandhi, an infectious disease expert at the University of
California, San Francisco.
Gandhi said that combination — with either mask on top —
could help achieve a similar effect as the N95 mask. She
recommended the added protection for people who will be indoors
in areas where transmission rates are high — which could reflect
the circulation of more contagious variants.
Another option Gandhi and a colleague recommend for
situations where you want "maximum" protection: A two-layer
cloth mask that has a filter material in between.
With single cloth masks for everyday use, Gandhi noted it’s
important that they’re made of tightly woven material and have
at least two layers, which creates "an obstacle course" that
makes it harder for virus-carrying particles to break through. |