Gidding HF, Machalek DA, Hendry A, Quinn HE, Vette K, Beard F, Shilling H, Hirani R, Gosbell IB, Irving DO, Hueston L, Downes M, Carlin JB, O’Sullivan MVN, Dwyer DE, Kaldor J, Macartney K Full text COVID-19 Surveillance 2021 Medical Journal of Australia. 3 February 2021