Hon CHRIS HIPKINS: No. There's a variety of reasons, including us wanting to make sure we're validating the science and that we're going to get good, reliable results. There are some workforce constraints. We're working through those to make sure that we can do saliva testing more widely. But there's a combination of factors. We will do saliva testing more widely at such time as it gives us the confidence that we need that it's reliable and that it adds something to our testing regime.