Hon ANDREW LITTLE (Minister of Health): Quantities of 22 different vaccines expired before they were used in the last five years. The list value of these vaccines, before applying rebates and credits, was $21.7 million, and after applying rebates and credits, the net cost was $11.5 million. When the decision to procure a particular vaccine is made, it is done on the best information at the time and with a reasonable expectation of what can be administered in the period ahead. But the nature of pharmaceutical purchasing is that once you place an order, that's it; you own the stock. Generally speaking, they don't do sale and return. In response to the second part of the member's question: 24,319 15- to 30-year-olds have been vaccinated as part of the measles catch-up campaign since July 2020.