Thank you for these questions.
I'll begin by saying that the vaccination rate of 50% to 60% is a minimum. In the UK, 50% to 53% of the population has received a first dose of the vaccine, and we're seeing that the infection rate continues to drop there.
I believe that a similar situation could exist in Canada. The big difference is that our immunity rate is much lower because fewer people have been infected with the virus. So it's possible that we'll need to reach a 60% or 65% vaccination rate before health measures are relaxed, but we'll see.
As for herd immunity, I think we'll have to continue following all public health measures until there's a significant drop in the infection rate. We can all agree that we haven't yet reached that point, so it's absolutely necessary to continue to follow all public health measures.