I'm not sure. I think it's the travel. It depends. It's hard to identify whether it is Canadians travelling or immigrants. The risk depends on where they go. The well-known factor is people visiting friends and family. It's people who are Canadians, but who are visiting friends and family in areas of the world where diseases are more common than they are in Canada.
I would like reiterate that this idea that immigrants pose a risk, when they are healthier than Canadians, is a bit of an issue. There are recognized risks. We don't discount them at all. In regard to volume and continued exposure, we have huge communities like Peel, where people go back to India and spend many months there.