Rt Hon JACINDA ARDERN (Prime Minister): I agree with him that it is unlikely that there could have been silent transmission for that long, and the Institute of Environmental Science and Research (ESR) analysis supports that to date. However, that does not necessarily mean there has been a failure at the border. As I said on 15 July, when announcing our resurgence plan, "We only need to look to Victoria, New South Wales, Hong Kong, Singapore, and Korea to see examples of other places that, like us, had the virus under control at a point in time only to see it emerge again. This does not mean anyone has failed. It means perfection in the response to a virus and a pandemic is just not possible." There are a number of ways the cluster originating at Americold could have entered New Zealand. To date, we have not established the source of the cluster, but we are working hard to investigate all possible options.