Face masks or respirators (N95/KN95s) effectively filter virus-sized particles in laboratory settings
— Read on www.cdc.gov/mmwr/volumes/71/wr/mm7106e1.htm
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Face masks or respirators (N95/KN95s) effectively filter virus-sized particles in laboratory settings
— Read on www.cdc.gov/mmwr/volumes/71/wr/mm7106e1.htm