Dr SHANE RETI (National—Whangarei): Thank you. The Minister's talked about those who were negative at day three and then positive at day 12, maybe the false positives. He wrote to me when I asked that question—what is the rate of false positives—and the reply to me was 30 percent. That's a big number. It's not your fault or anyone's fault, but it's still a big number—one in three who test and say "I'm negative; I'm fine." but in fact may be positive. What plans does the Minister have to address that? How do we look at the impact of that? What do we do about that other than sequential testing of some duration?