We are—with the review panel that I have announced today—going to be having another look at what the most appropriate metrics are, and I've had conversations with Dr Verrall already, because those metrics are very much designed for a system where there was transmission within the community. It was designed in a different context to the one that we're dealing with now. Now we're dealing primarily with cases that come through the border, and so we've got to have another look at whether those metrics are the most appropriate, because cases that come through the border, for example, they've often been infected well before they even arrive in New Zealand, before we could even hope to test them, and therefore the metrics would not accommodate that.