COVID-19 pandemic in Australia
The University of Queensland closed after three students tested positive for the virus. Western Australia, like New South Wales, stopped schools from organising gatherings of over 500. Susan McDonald, a Queensland senator, said she was infected with the virus. New South Wales Liberal senator, Andrew Bragg, was the third Australian politician to test positive. On 18 March, a human biosecurity emergency was declared by the Governor-General, David Hurley, under Section 475 of the Biosecurity Act 2015.