Oxford–AstraZeneca’s coronavirus vaccine on Friday, making it the third shot officially authorized in the country.The approval by Health Canada follows that of Pfizer and Moderna, both of which also require two doses.The AstraZeneca shot is less effective in clinical trials than its rivals’ injections — 62 per cent versus high 90s — but offers distinct benefits.
Prime Minister Trudeau rejects plea from premiers to release details of vaccine contracts One major advantage is in logistics.