Two people have also died, including an unvaccinated woman in her 40s in Sydney and a vaccinated man in his 90s in palliative care in the Hunter region. The toll for the current outbreak in NSW is now at least 38.
"Behind every single statistic is a loved one, a family, and many carers," Premier Gladys Berejiklian said on Friday.
Greater Sydney and surrounding regions are in lockdown until at least August 28, as are multiple parts of regional NSW, as health authorities battle to contain an outbreak of the virulent Delta strain.
Ms Berejiklian said Blacktown and Mount Druitt in western Sydney had become areas of particular concern for health authorities, with a rise in cases.
There are currently 63 COVID-19 patients in NSW in intensive care, 30 of which are ventilated.
Victoria has recorded 15 new locally acquired coronavirus cases, including four mystery cases.
The health department on Friday confirmed 11 of the new cases were linked to known outbreaks, while eight were in quarantine during their infectious periods.
Some 40,737 tests were processed in the 24 hours to Friday morning, while 27,427 Victorians were vaccinated at state-run hubs.
It's the third consecutive day the state has recorded mystery infections, with authorities racing to find the source of four cases recorded on Thursday.
Queensland has recorded seven new virus cases linked to the west Brisbane cluster as authorities reinforce warnings about travelling south of the border.
Premier Annastacia Palaszczuk said each of the new cases was detected in home quarantine and spent no time in the community, as she called for "a clear plan for containment" from NSW.
"From Queensland's point of view we are very concerned...about how the clusters are continuing to expand," Ms Palaszczuk said on Monday.
"The last thing we want to see is this virus spread north.
"It is absolutely imperative that NSW contain this virus."