these are very low numbers for toronto, which makes it incredibly vulnerable moving forward, if subsequent studies back up the findings.

do the numbers make sense?

well, these are about the same numbers as presented by bc, and we know that the outbreak in vancouver was much milder than in toronto. if about the same percentage of people were infected in toronto as in vancouver, why was the death count so much higher in toronto? the population size doesn't account for it.

so, not really; given the number of deaths that are publicly acknowledged, and the fact that it is publicly acknowledged that many deaths are uncounted, one would expect a much higher rate in toronto than vancouver.

so, are there potential biases around the sample? well, they made some attempt to randomize it; i'd rather wait to see what further studies say than aimlessly nitpick.

so, i'll acknowledge the study, but i'm a little skeptical about it, it just seems a little too low.

https://www.publichealthontario.ca/-/media/documents/ncov/epi/2020/07/covid-19-epi-seroprevalence-in-ontario.pdf?la=en