Western Australia, Tasmania, Queensland, Northern Territory and the ACT have all introduced early restrictions on people who have visited Sydney's Northern Beaches area in recent days, with further announcements expected on Friday.
The Australian Health Protection Principal Committee met on Thursday night in response to the Northern Beaches cluster, which has now grown to 17 cases.
One of the new coronavirus cases in the region is an aged care worker, prompting authorities to lock down retirement homes in the area while they try to contain the outbreak.
Investigations continue into whether an additional case in south-west Sydney is linked to the cluster.
Here's a list of Thursday's key events:
- Anyone who has been to Sydney's Northern Beaches since December 11 is not allowed to enter Tasmania
- Queensland, NT and Western Australia require travellers who have visited the Northern Beaches to go into quarantine for 14 days
- The ACT says people who have been to Sydney's Northern Beaches must quarantine and get tested
- NSW reports an additional 12 new cases in the region taking the total on the Northern Beaches to 17
- More repatriated Australians touch down in NT, and will head into the Howard Springs quarantine facility for two weeks
- Victorian Government breached human rights by shutting down nine public housing towers, the Victorian Ombudsman finds
- Family grieves for 13-year-old as COVID-19 deaths surge in US
- French President Emmanuel Macron tests positive to coronavirus