Hon CHRIS HIPKINS (Minister for COVID-19 Response): Certainly, the contact tracing measures are very good measures. They've recently been reviewed and the results of that review have yet to be formalised. We've looked at those in light of the fact that the contact tracing system—and Dr Verrall is now part of the Government—was established in the context of potential widespread community transmission. That is not what we have been dealing with most of the last year. So we've had another look at those and we'll make further decisions on whether any of those measures should be changed in due course. But the fact that we are on to this very early, the fact that this is really only five days that we are talking about here—from first potential point of exposure through to today—is a good sign. The fact that our first test results are coming back negative is also a good sign. The teams were isolating people very, very quickly. Again, that is encouraging, but we keep that under review.