AUTHOR=Vickers David M. , Hardie John , Eberspaecher Stefan , Chaufan Claudia , Pelech Steven TITLE=Counterfactuals of effects of vaccination and public health measures on COVID-19 cases in Canada: what could have happened? JOURNAL=Frontiers in Public Health VOLUME=11 YEAR=2023 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2023.1173673 DOI=10.3389/fpubh.2023.1173673 ISSN=2296-2565