2 ms·
> It only works if everyone 95% of people are wearing one, especially indoors. If this is the only RCT for cloth masks what kind of evidence is behind your cla
by ketamine__ 6y ago
> It only works if everyone 95% of people are wearing one, especially indoors.
If this is the only RCT for cloth masks what kind of evidence is behind your claim? Do you have a source?