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Study shows N95 masks near-perfect at blocking escape of airborne COVID-19 | University of Maryland | School of Public Health
COLLEGE PARK, Md. โ In a head-to-head comparison of masks worn by people with active COVID-19, the inexpensive โduckbillโ N95 came out on top, stopping 98% of COVID-19 particles in the breath of infected people from escaping into the air. Led by researchersโฆ
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