[gruez]

>Source – there are many to choose from: https://www.sciencedirect.com/science/article/pii/S014067362...

control-f for "mask": 1 match, and it's in a sentence talking about how mask quality and fit is important to preventing infection, but doesn't elaborate on the effectiveness of cloth/surgical vs n95 masks.

On the other hand there are also studies that show it working, eg. https://www.thelancet.com/journals/lancet/article/PIIS0140-6...

>The surgical and N95 masks were both effective in significantly reducing the risk of infection, which together with the finding that 30% of non-infected staff did not use masks (table 2) supports that transmission is not airborne.

Do you have better a better study for this, preferably some sort of meta-study?