https://www.canada.ca/en/public-health/news/2021/06/statement-from-the-council-of-chief-medical-officers-of-health-ccmoh-interchangeability-of-authorized-covid-19-vaccines.html
Statement from the Council of Chief Medical Officers of Health (CCMOH): Interchangeability of...
Statement from the Council of Chief Medical Officers of Health on Implementing COVID-19 Vaccination in Canada.
from themedical officersstatementcouncil