What if you test positive?

Any suggestions as what to what a a departing visitor should do if he or she does test positive.? Are there rules or protocols in place?
I have no reason to think I will test positive BUT, forewarned is forearmed.

For starters, you won't be allowed on any plane. You will be asked by local authorities to quarantine yourself.

But if you've been following protocols including the strict adherence to wearing a facemask in public then you shouldn't have anything to worry about. I worry about the foreigners wandering our streets while not wearing facemasks. It only takes one of them to ruin the day for a lot of people.