Depends what you mean by "prevent". Certainly your chances of being hospitalized are less if you're vaccinated. See the "Reduction Associated" items in the "Current Status in Ontario" figures at the top of https://covid19-sciencetable.ca/ontario-dashboard/
Depends what you mean by "prevent". Certainly your chances of being hospitalized are less if you're vaccinated. See the "Reduction Associated" items in the "Current Status in Ontario" figures at the top of https://covid19-sciencetable.ca/ontario-dashboard/