Not wearing masks to protect against coronavirus is a "big mistake" - Head of CDC, China
"The big mistake in the U.S. and Europe, in my opinion, is that people aren’t wearing masks. This virus is transmitted by droplets and close contact. Droplets play a very important role—you’ve got to wear a mask, because when you speak, there are always droplets coming out of your mouth. Many people have asymptomatic or presymptomatic infections. If they are wearing face masks, it can prevent droplets that carry the virus from escaping and infecting others."
So the benefit is to protect others - this is interesting, because
the common arguments against their use in the West are that their protection is uncertain for the wearer.
But if it protects others, and everybody wears them, everybody gets protected, right?
I guess such an extraordinary thought was considered either unpopular, like strict isolation / lockdown, or would in any case never be followed by the free people in the West!