WASHINGTON — We’ve already been through two winters with COVID-19, but this year, we have three viruses on our minds: COVID-19, the flu, and RSV. The numbers are up, and Rochelle Walensky, director of ...
In a recent study published in eBioMedicine, researchers examined the efficiency of surgical masks, fabric masks, N95 respirators, and KN95 respirators in lowering the severe acute respiratory ...
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