The principle is good. It's a health declaration card, which actually sits outside the flu pandemic response. It sits in another document, from 2016, around protecting international ports and borders. It's a good document. It's a good tool, but we've got to ask the right questions. The wrong questions, to reiterate, are "cough, fever, and difficulty in breathing". It's the difficulty in breathing part that's the wrong question, and we know that because when I queried the Institute of Environmental Science and Research (ESR) and said "What are the main set of symptoms that New Zealanders had?", they said "Cough, fever, and a sore throat." Were there only a few people with a sore throat? No. In fact, nearly 50 percent of people with coronavirus have had a sore throat, and when I talk with people who have gone to the testing stations and asked them "Well, what symptoms did you have?", the vast majority have actually complained about a sore throat. So it's a really key symptom, and our arrivals card—our prime screening tool—doesn't cover it. 