Hon CHRIS HIPKINS: It is possible; the advice that we have had, though, is that it's highly unlikely. What we've indicated with these particular cases is because we don't know the origin of the cases, we'll leave no stone unturned to find the origin of the cases. The most likely scenario is that it's associated with case B's workplace, which was at the border. That is still the most likely scenario. However, because there are still some question marks over that, we will pursue and investigate any other possibility, no matter how unlikely it is. There was a case that arrived at the Sheraton Four Points late last year where there is not a clear match with the cases we are dealing with at the moment but where there is a more distant match—it's a B.1.1.7 variant—so we want to just absolutely discount that possibility. So there's some further investigation going on around that.