Will Canadians need a third dose COVID-19 booster? Experts weigh in:'Evidence is not there yet': immunologist
by from on (#5MCXQ)
Pfizer and BioNTech have announced they will be seeking approval for a third dose of COVID-19 vaccine to act as a booster in the coming months, stirring up mixed feelings among scientists and experts who are unsure if a booster shot will be necessary.