Rt Hon JACINDA ARDERN: Because, as most countries around the world have implemented, the 14-day isolation period is the most important thing that any country can do to manage cases coming in at the border. That is why, when you pan around the world, most countries are opting for isolation and quarantine as opposed to a simple testing regime, with the reason for that being, of course, that because of the different time periods at which COVID can manifest, the early stage is the most likely stage when you shed infection, and the high rate of false negatives can be produced. As Dr Siouxsie Wiles says, "That two-week isolation is the really important bit, not really the testing—the isolation." 