Vaccines
This paper found that antibodies from infection stick around for at least ten months. Given that vaccination is even better at making antibodies, this is a good sign for the vaccinated: it makes it less likely that we will need frequent boosters.
According to this web page, Canada has a really low vax hesitancy rate:
Mitigation Measures
If someone says that masks don’t work, point them here:
I prefer to wait on news until it actually happens, but this article is pretty forceful in saying that Trudeau is going to open the border to double-vaxxed USA travellers soon.