We've also introduced pre-departure testing, something that wasn't feasible when it was first mooted but is now feasible, and it's been added to our overall response. We do regular audits of our infection prevention and control in our managed isolation facilities at our border to identify where there may be further risk and make sure we're taking additional measures to minimise that risk as much as possible. You see that in the changes to personal protective equipment requirements, the use of N95 masks instead of surgical masks for those who are coming into contact with people who have come across the border. All of those things are continuing to improve. You see that in saliva testing. Saliva testing—it is not, as David Seymour suggested, that we are reluctant to do it; it is that we want to make sure when we do it that the science is right and that we're going to get valid test results from that, and that is what we are continuing to do. 