Information on the Pfizer COVID-19 vaccine provided by the government of Canada
Pfizer-BioNTech COVID-19 vaccine: What you should know
https://www.canada.ca/en/health-canada/services/drugs-health-products/covid19-industry/drugs-vaccines-treatments/vaccines/pfizer-biontech.html?utm_source=link.cep.health&utm_medium=urlshortener&utm_campaign=covid-emerg