Received: 2 June 2021
Accepted: 20 October 2021
First Online: 30 October 2021
: This study has been exempted from requiring ethical approval by the New Zealand Health and Disabilities Ethics Committees (HDEC). Data were collected by ESR on behalf of the New Zealand Ministry of Health for COVID19 surveillance to inform the local, national and international (WHO) public health response to the pandemic and all methods were carried out in accordance with relevant guidelines and regulations. Access to the data was approved by the Data Governance Committee of the New Zealand Ministry of Health.
: The New Zealand Ministry of Health gave permission to the Institute of Environmental Science and Research for the use of this data by the authors and all authors provided their consent for publication.
: The authors declare no competing interests.