Queensland has recorded nine new locally-acquired cases of COVID-19 with the greater southeast to come out of lockdown, but a new mystery case will send Cairns into lockdown at the same time.
NSW has reported 262 new locally acquired cases of COVID-19 and at least 72 of those people were circulating in the community for all or part of their infectious period.
Victoria has recorded 11 new locally acquired COVID-19 cases. Health officials say all are linked to previously reported cases although they were not in quarantine while infectious.
Five people have died and 319 new COVID-19 cases have been recorded in NSW, as the nation's top doctor calls for a circuit breaker to halt the virus' spread.
More than 16 million Australians are under stay-at-home restrictions with Victoria having joined Sydney, parts of regional NSW and southeast Queensland in lockdown.
Victoria is in a "precarious position" on the first full day of its sixth lockdown, as authorities race to suppress two separate outbreaks of the Delta coronavirus variant.
Authorities are increasingly confident southeast Queensland will emerge from an eight-day lockdown on Sunday amid the state's worst COVID-19 outbreak in a year.
The NSW Hunter and Upper Hunter region will enter a snap seven-day lockdown after a beach party near Newcastle, which authorities believe may be linked to a COVID-19 outbreak.
Queensland is facing its biggest COVID-19 outbreak since the pandemic's first wave, with a cluster growing to 63 cases halfway through an eight-day lockdown of the state's southeast.