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Most Canadians now have hybrid immunity against SARS-CoV-2 through a combination of infection and vaccination, but certain groups remain vulnerable.

United statesUnited kingdomNew yorkAnna bershteynDavidl buckeridgeBruced mazerPublic health agency of canadaGrossman school of medicineImmunity taskCanadian medical association journalImmunity task forceMcgill universityYork city department of healthMost canadiansTask forceMedscape medical