A good post from the New York Times

They are dancing around the facts but they at least published this story:

A New Study Questions Whether Masks Protect Wearers. You Need to Wear Them Anyway.
Researchers in Denmark reported on Wednesday that surgical masks did not protect the wearers against infection with the coronavirus in a large randomized clinical trial. But the findings conflict with those from a number of other studies, experts said, and is not likely to alter public health recommendations in the United States.

More at the site.  Little or no protection.