Among other things, this is obvious BS: > "There is no scientific evidence they are effective in reducing the risk of SARS-CoV-2 transmission Given that the c

Among other things, this is obvious BS: > "There is no scientific evidence they are effective in reducing the risk of SARS-CoV-2 transmission Given that the coronavirus appeared only a few months ago, "no scientific evidence" doesn't mean much because very little research exists on the subject. Also, there is no harm in caution. Interestingly, they keep suggesting social distancing, which doesn't have much scientific support, either. It's just one of those common sense things.