Hipkins ChrisHon CHRIS HIPKINS (Minister for COVID-19 Response): Firstly on the issue of boosters the technical advisory team that we have reviewing this evidence every day and every week indicate to us at the moment the evidence on that is mixed and so they're monitoring that very closely. So therefore the prudent thing for New Zealand to do in that situation is exactly what we're doing which is making sure that we're hedging our bets making sure we're going to have options.In terms of our current roll-out we know that we will have around 1.5 million doses of Pfizer vaccine left over this year that will allow us to start the booster programme and conversations are happening with Pfizer and with other vaccine manufacturers around the supply of vaccines for boosters. We have as I indicated just before options for Novavax early in the new year and there is some international evidence that suggests that that could actually be a good booster vaccine for New Zealand's purposes as well. So in terms of those discussions we do take a different approach to some other countries who we like to compare ourselves with when those discussions are happening; we announce them once we've got a signed deal. Other countries have been announcing them once they've got if you like a handshake or an indication of what's going to be possible. We don't do it until the deal is signed and we have absolute certainty and that's the approach that we're going to continue to do.In terms of contact tracing yes I am satisfied with the performance of the contact tracing system in this outbreak. I would note a couple of things. Delta got a head start. It was circulating in the community for a week before we even knew that it was there and as a result there are still some linkages in those early cases that have been difficult to identify. So we know what our clusters are and there are multiple different sub-clusters I should say—it's all one cluster but multiple different sub-clusters. The linkages between those haven't in some of those sub-clusters been easy to identify and that is because of the head start that Delta got on us.In terms of the South Island North Island Auckland all of those issues around regions I would note that our contact—and also it comes back to the electronic tracing question the member raised. Our system has relied up until now on voluntary use of the QR codes voluntary use of the Bluetooth tracer app and we have seen very low usage rates of that amongst New Zealanders. The reality therefore is that we saw movement out of Auckland during the week that we knew that it was active in there—at least a week that we knew it was active in the Auckland community—across the country and our contact tracers don't know who was in locations of interest unless they identify themselves. So there is always the risk that people have not been identifying themselves and therefore that there could be spread in other parts of the country. The longer the period of time that's gone on the more testing we've had around the country the less that risk has been.But I think if I could reflect very candidly about our experience from the first outbreak that we dealt with this year—or the first significant outbreak that we dealt with this year—the Valentine's Day cluster I am much more reluctant to go down alert levels to push hard to go down alert levels quickly. I would rather that we give people certainty that knowing when they're going down alert levels they're not going to have to bounce back up again which is what happened with that Valentine's Day cluster. So hopefully I've covered the key points the member was raising.