COVID -19 Update: CDC says "tight-fitted masks or double-masking increases protection"

Feb 11, 2021, 05:45 PM(IST) WION Video Team
United States' Centers for Disease Control and Prevention said that "wearing a mask — any mask — reduces the risk of infection with the coronavirus, but wearing a more tightly fitted surgical mask, or layering a cloth mask atop a surgical mask, can vastly increase protections to the wearer and others.
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