Tsang, T. and COVID-19 National Incident Room Surveillance Team 2020. COVID-19, Australia: Epidemiology Report 4: Reporting week ending 19:00 AEDT 22 February 2020 . Communicable Diseases Intelligence. 44, (Feb. 2020). DOI:https://doi.org/10.33321/cdi.2020.44.17.