The first phase of the Action to Beat Coronavirus (Ab-C) study in Canada is now complete, including analysis of the blood samples and correlating the lab results with responses to the survey.
The bottom line is that about 2% of the samples were positive for COVID-19 antibodies, signaling infection during the first viral wave from April to August 2020.
In most respects, the Angus Reid Forum members who participated are similar in health profile to the overall Canadian population, so 2% is a reasonable estimate for nationwide infection prevalence through September 1, or up to 1 million adult infections.
This places Canada among the lowest national rates early in the pandemic, which ranged from about 1% in Iceland to 9% in the US.
People who reported symptoms were likely to have a positive blood antibody test.
About 30% of those with positive blood antibody tests did not report symptoms—suggesting that asymptomatic infections are common.
We now know that COVID-19 transmission began to accelerate in Canada—as in much of the world—toward the end of 2020, continuing into 2021. We need your help to continue to track the pandemic!
Thanks for being part of the fight against COVID.
The Entire Ab-C Team