Hon CHRIS HIPKINS: No, I don't have an accurate estimate of that at this present time. That is one of the things that our contact tracers will identify as they continue to work their way through case investigations, but the key priority for our case investigators—and I think this is very, very important—is to limit the onwards spread. So they need to be forward-looking in their case investigations first, and then, of course, they will look to provide us with other insights and information as it's possible to do that.