The U.S. Centers for Disease Control.

Your opinion and discussion of the failings of cotton cloth masks ignores that fact that they are better than nothing and in many cases much better than nothing. Your dismissal of the cotton masks was opinion-based with no evidence, and the medical mask information offered was irrelevant since we have been told to leave the medical masks for medical professionals, so it was dismissed.

If indeed you're a health professional, then act like one. Understand that people taking actions to protect themselves (maintaining a distance and washing their hands) and others (wearing a mask so should they have the virus they're less likely to disperse droplets that could contain the virus) are better than listening to you whine about how every thing we might do is doomed to failure. Pull up your socks, put on your cotton mask, and move along unless you're here to be helpful.