Hon GRANT ROBERTSON (Minister of Finance) on behalf of the Minister of Health: I, as a member of Cabinet, am involved in setting the criteria and assessment of the alert levels. Cabinet has agreed eight factors to use in assessing changes between alert levels, including the Director-General of Health's satisfaction on four health matters, which include transmission of the virus, contact tracing and testing, isolation and border measures, and capacity of the health system. The Director-General of Health makes an assessment against these four criteria for the Minister of Health and Government to consider. This assessment is based on the latest epidemiological evidence in New Zealand and internationally, data on the health service response, and other available sources of information. It is also informed by independent scientific public health experts.