Mitigation Measures
This article says that the Canadian border guards are close to striking.
Supply
This article says that Canada now has enough vaccine for two doses for every person over 12.
Vaccines
This study found way more of a certain kind of impurities in AZ than in J&J, and those impurities sure look like they would lead to blood clots.
Recommended Reading
This article talks about breakthrough cases.
This tweet thread is a great review of why the vaccines don’t impact fertility.