They slightly reduce the distance and amount of infected moisture from your lungs spreading into the surrounding air a bit as you exhale, but that's pretty much the extent of their benefit. Not enough to matter, though, as evidenced by that CDC study.
That benefit is overshadowed by leaving a soiled rag on your face that, if there was virus in the air or droplets, is now attached to said face. Improper use of these masks causes infection, including: reusing masks, having them on after even a relatively short period of time, constantly touching the mask and face, or coming in close contact with others because of the false sense of safety.
Many if the self-proclaimed hero mask wearers break all these rules, making their masks useless.
There's a reason why masks in hospitals are disposed after each contact. Except surprisingly now when you'd think priority should be higher.
Source: I work Healthcare and we are mandate to have a mask our entire shift, yet are only allowed 1. (Obviously with positive patients this is different and we use full fresh PPE, yet it shows how badly handled things are being handled in all other scenarios)
If they don't stop incoming viruses...
They don't magically stop them from getting out.
Even the CDC says they are of no help.
https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article
They slightly reduce the distance and amount of infected moisture from your lungs spreading into the surrounding air a bit as you exhale, but that's pretty much the extent of their benefit. Not enough to matter, though, as evidenced by that CDC study.
That benefit is overshadowed by leaving a soiled rag on your face that, if there was virus in the air or droplets, is now attached to said face. Improper use of these masks causes infection, including: reusing masks, having them on after even a relatively short period of time, constantly touching the mask and face, or coming in close contact with others because of the false sense of safety.
Many if the self-proclaimed hero mask wearers break all these rules, making their masks useless.
There's a reason why masks in hospitals are disposed after each contact. Except surprisingly now when you'd think priority should be higher.
Source: I work Healthcare and we are mandate to have a mask our entire shift, yet are only allowed 1. (Obviously with positive patients this is different and we use full fresh PPE, yet it shows how badly handled things are being handled in all other scenarios)
Talk to the CDC then. :)
Won't refute because I have no need to.
My point stands, even the CDC knows basic masks are bullshit.
Nothing you posted proved that claim incorrect.
The ONLY reason I care about that study is the CDC is supplying it and saying something else.