Reb Eliezer: Isn’t it sad when our rabbanim are tricked by goysha scientists into doing something totally dumb. Cholera isn’t spread by breathing. The correct advice doesn’t require a mask, but does require boiling water. In the examples of telling people not to fast, that would actually be the wrong thing to do for an uninfected person. If you don’t have cholera, fasting actually makes you safer (since it was the food and drink that made people sick).
So when the goyim (and frei Jews) today announce that according to their science, we must close our shuls and yeshivos (but not their “politically correct” gatherings), we should be highly skeptical, and suggest they take a long walk off a short pier.