In terms of the overall source investigation, this may well be one of those cases where we never quite get to the bottom of exactly what happened here. We weren't able to identify clearly the source of the Americold case which triggered the Auckland outbreak back in August, and it may well be that this is a similar situation. When in doubt, though, there are some more likely scenarios than others, and of course we do have a border worker who was involved here, and so that continues to be one of the more likely of a series of unlikely potential scenarios.