Hon CHRIS HIPKINS: The biggest constraint on the speed of our roll-out, as I've said many times, has been getting vaccines into the country. It has been supply rather than the roll-out that has been constraining that. We made the decision in January to adopt a Pfizer-based campaign. Pfizer were very clear at the time that that meant the bulk of our deliveries would be from July onwards—generally, in the July through to September period.