Warning: Used Masks Provide Less Protection
WHAT’S BEING CLAIMED: A new 3-layer surgical mask has a 65% efficacy to filter particles while a used one only has 25%. Masks slow down …
Did that just really happen
Did that just really happen
WHAT’S BEING CLAIMED: A new 3-layer surgical mask has a 65% efficacy to filter particles while a used one only has 25%. Masks slow down …