We had a mini house council earlier. I live with a bunch of International students, including one from China and two from Korea... though they've all been here for at least two and a half months. OTOH, we've had five people go through the house who were in T.O. in the last week, including one of the tenants. It's extremely unlikely that any of them were exposed, but not impossible.
If we start seeing widespread infection in Toronto next week, it will be time to go from yakking to doing... if it's quiet by the end of next week (say, maybe a dozen or so more infections from contact with the initial family) then it might be OK.
... fixed typo. JT