[onewhippedpuppy]

Originally Posted by Cajundaddy

The current state of science on public masking- No significant evidence it prevents spread of flu or other respiratory virus.

https://www.cochrane.org/CD006207/ARI_do-physical-measures-such-hand-washing-or-wearing-masks-stop-or-slow-down-spread-respiratory-viruses

We had the bird flu (2009) back in December. My wife had the flu shot and I abstained. First week symptoms and duration were identical. I did have a lingering cough longer than her but this is typical. The flu shot was a swing and a miss this round. I am more likely to cough, she is more likely to hurl. I attribute this to lung damage while training in SoCal during the worst smog events in US history 1968-1974.

Something that has been extensively studied and well known for at least 20 years. Except for that period of time where we were following the science. It’s not even hard to understand. Masks have holes in them, the holes are a known size. Viruses have a known size. When the virus is smaller than the hole, it can pass through the hole. Simple.