Study reveals children and youth had highest rates of SARS-CoV-2 infection in Canada before third wave
This brings the total percentage of Canadians with some form of immunity before the third wave to 3.6%.
- This brings the total percentage of Canadians with some form of immunity before the third wave to 3.6%.
- Younger age groups and especially children and adolescents - had higher rates of antibodies in their blood suggesting a past SARS-CoV-2 infection.
- The overall seroprevalence of SARS-CoV-2 antibodies was 3.4% among children and youth 1 to 19 years of age between November and April 2021, explains Mr. Gravel.
- As vaccines had not yet been distributed to this age group at the time of the survey, nearly all of these children and youth had antibodies due to a previous infection.