We already have these requirements for other infectious diseases as well as health codes that cover clothing and sometimes protective equipment and procedure requirements for workers and customers in public settings.

I liken masks to the requirement to have at least minimal clothing on. Sanitation is the same (wash your hands, here's how to scrub for 30 seconds).

You do not have to get your child vaccinated. If they're going to mandate vaccines, why haven't they done it already? What would have had to change before the pandemic for you to want them to be mandated?

No need to require vaccinations for a flash in the pan event. These things come and go. In the grand scheme of things, human civilization, this will be quickly forgotten.