COVID-19 vaccination campaign | Gouvernement du Québec

To find out more about the administration of the 2nd dose of the COVID-19 vaccine, go to the page Second dose of COVID-19 vaccine. Administering an additional dose. For people with a weakened immune system or on dialysis, three doses of the COVID-19 vaccine are necessary. For further information, see the Additional dose of COVID-19 vaccine page.

https://www.quebec.ca/en/health/health-issues/a-z/2019-coronavirus/progress-of-the-covid-19-vaccination/