N95 masks offer the “highest level of protection” against COVID, according to the Centers for Disease Control and Prevention The' N. Pham tpham@charlottteobserver.com As COVID cases surge in North ...
In a head-to-head comparison of masks worn by people with active COVID-19, the inexpensive 'duckbill' N95 came out on top, stopping 98% of COVID-19 particles in the breath of infected people from ...
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