What are the side effects of Pfizer's, Moderna's vaccines? Your questions answered | CBC News
8:07am PST - December 9th, 2020 pfizer - CBC NewsModerna's and Pfizer/BioNTech's annoucements of promising results for their vaccines against COVID-19 have prompted questions from CBC readers. What are the side effects? How long does the protection last? How were volunteers infected? When will Canadians get…