@_TommyBoy1995 @RIFAN23 @DailySignal You don't even have to read past the headline to see that CDC did NOT say masks don't do anything. They said cloth masks don't protect AS EFFECTIVELY.
@_TommyBoy1995@RIFAN23@DailySignal你甚至不必读过标题就能看到疾病控制中心没有说口罩什么都没用。他们说布制口罩的防护效果不太好。