A nurse holds a phial of the Pfizer-BioNTech COVID-19 vaccine at Guy’s Hospital in London, Tuesday, Dec. 8, 2020, as the U.K. health authorities rolled out a national mass vaccination program. (AP Photo/Frank Augstein, Pool)
Health Canada authorizes use of Pfizer-BioNTech COVID-19 vaccine
Canada becomes third country after the U.K. and Bahrain to approve the Pfizer vaccine
