Rt Hon JACINDA ARDERN: We take the information in its totality. We're very interested in what the close contacts tell us, so those worksite contacts in particular, even though in some cases they've been considered casual plus. We are very interested to know that, of course, two passengers who were travelling in a vehicle for a long time, they've already come back negative. We're interested in what sewage testing tells us; we expect those results through tomorrow as well. We already have results from 10 February that tell us nothing was picked up. Then, of course, we'll want to see how many of the casual contacts we have through. So we take it in the round. There'll sometimes be legitimate reasons why we may struggle, out of 1,600 people, to find maybe one or two, so we're not always absolute, but we take in a round as much information as we can.