I just want to clarify that prior to omicron, of course, there was the very phased easing of border measures, including the application of mandatory random testing for the vaccinated travellers. Because of omicron, those measures were increased, because we knew very little about the virus and we knew it was very transmissible.
I do think that the testing has been actually quite important, in that even with pre-arrival testing the positivity rate kept going up, not surprisingly, for the non-vaccinated or partially vaccinated, but even for the vaccinated travellers. That is an actual fact. Even with pre-arrival testing, with on-arrival testing it's still quite high. I do think, though, moving forward, particularly as we see the omicron wave subside and our hospitals less impacted, that these kinds of policies or the testing strategies need to evolve.