Canada closed some of the internal borders between its provinces; something that has never happened before. Some road blocks, some of its based simply on the honour system. Here in Ontario, I cannot legally visit anywhere east of Quebec right now without quarantining on arrival for 2 weeks. And some remote communities are literally barricaded from entry.
The regions that did quarantine themselves like that (the Atlantic provinces) are in fact doing much better than the rest of the country. Newfoundland is in near-total suppression. Though unlike some others in this thread I do believe being an island is helpful, even if just psychologically.
