I dunno, why don't you declare provinces of emergency?? - hockey season's suspended, there was no Hockey Night in Canada, isn't that about the same thing?! jk a little levity...
States can declare a state of emergency, usually it's been when there was severe storm/tornado damage, etc. If they declare that they can get supplies without having to take bids (our county agency had to do that too for certain things) or be eligible for funding. Our governor got asked at the press conference about some criticism that's he's being too aggressive. I think, go for it! If it keeps it from spreading as much as possible, then do what needs to be done.
There's one bar in a college town near me that was packed and had lines down the sidewalk over the weekend, and is now closed, and green beer day won't be happening - will students panic in the streets?! Nah, they'll probably just have it at the houses they rent off campus! (while they're supposed to be doing their work online). Especially with unseasonably warm weather. They don't start spring break til next week, although schools like my alma mater are closing dorms (making arrangements for students who will be staying) since they're just starting spring break then going online til the end of the semester.