So 1% protection ?
>but nothing does. However, masks are important, because they enable people to safely perform essential activities like grocery shopping, and most jobs.
fortunately that the chance of getting sick from covid from doing those activities without mask are very very low.
infection is not useful metric because only small percentage actually cause sickness.
Masks: The Science & The Myths : https://www.youtube.com/watch?v=9RaBLKKXJt4