Canada's 'gamble' on delaying, mixing and matching Covid-19 vaccines paid off
Canada's 'gamble' on delaying, mixing and matching Covid-19 vaccines paid off
Oct 10, 2021, 5:15am UTC
https://www.cbc.ca/news/health/canada-vaccine-effectiveness-data-delayed-doses-mixing-matching-covid-19-vaccines-1.6205993