Statistics Canada, in partnership with the Public Health Agency of Canada and Canada's COVID-19 Immunity Task Force, conducted the second cycle of the Canadian COVID-19 Antibody and Health Survey (CCAHS-2) to better understand the spread of SARS-CoV-2, the virus that causes COVID-19, and the longer-term impacts of COVID-19 in Canadian adults. This unique survey combines self-reported information about past and current infections with direct measures of health, including dried blood spot (DBS) testing to detect antibodies against SARS-CoV-2.
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