I certainly think it's a possibility. I just think we really have to have a firm understanding of what the values of Canadians are concerning that.
Certainly, we know people who are vaccinated are very unlikely to get this infection, and if they do get this infection, they're probably—and I have to be careful with my words—less likely to transmit it.
I think we have to gauge the value of Canadians to see if that's something they would be amenable to, because there certainly are equity issues with that. Not everyone can travel and not everyone might have access to a vaccine. We're prioritizing the vaccines with different groups. There are going to be enormous equity issues with passports, which would have to be addressed.