I think another important point to make is that it would be naive to think we're going to stop infectious disease at the border with any sort of number of measures. The practical fact is that many infectious diseases, based on the incubation periods and when people actually declare their symptoms, are discovered after the fact.
So a large part of how we're going to control infectious diseases coming from other countries is by training our health care system providers--physicians in emergency rooms and in doctors' offices--to be on the lookout, to be always vigilant, and if someone comes to their office who is sick, they pick up a careful travel history and ask where they've been recently. When someone walks through an emergency room in Saskatoon, you can't just assume they're from the local area. They might have started 24 hours ago in South Africa or some other part of the world, taken a bunch of flights, and ended up in that emergency room.
Our experience is that for many of the infectious diseases that are actually diagnosed in Canada and reported, yes, these people actually did travel from other parts of the world and came to Canada by a variety of means--air, marine, or land--but actually didn't fully become symptomatic and seek medical attention until after they were in the country. That's really another important point to note. It's not going to be because of certain measures that we're going to catch everything at the border. That seems to be accepted and—