There's no 'best' vaccine, expert says as Canada OKs AstraZeneca shots
There’s no ‘best’ vaccine, expert says as Canada OKs AstraZeneca shots Twinkle Ghosh © University of Oxford/John Cairns via AP, File In this undated file photo issued by the University of Oxford on Monday, Nov. 23, 2020, a researcher in a laboratory at the Jenner Institute in Oxford, England, works on the coronavirus vaccine developed by AstraZeneca and Oxford University. Vaccines from Moderna, Pfizer-BioNTech and AstraZeneca-Oxford have now been approved in Canada. While Canadians may not get a choice about which COVID-19 vaccine to take, all three offer protection...