COVID-19 alert

WASHINGTON — The U.S. Centers for Disease Control and Prevention released a study and new guidance promoting the wearing of two face masks to help block COVID-19.

The CDC study found wearing one mask blocked 40% of the particles approaching a person’s head while a cloth mask worn on top of a surgical mask blocked between 82% and 92.5% of particles.

The CDC’s latest guidance on mask wearing recommends two layers of masking — including two masks — to help block the virus and other germs.

The U.S. health agency does not recommend wearing two surgical masks or another mask with protective KN95 masks.

The CDC also recommends tighter fighting masks that cover the nose better including ones with nose wires.

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