[nutshell89]

In early 2020, NYC transit operators were barred from wearing masks and the MTA reasoned that there was not federal or state policy at the time recommending mask usage.

At the time, the surgeon general cautioned the general public to stop buying masks because, "they had not been proven effective in preventing the spread of coronavirus."

> https://gothamist.com/news/subway-train-operator-says-mta-wo...

[leephillips]

Interesting to know, but not examples of banning for advocating the use of masks.