The state recorded nine virus deaths and 5746 new cases after 14,490 tests in the 24 hours to 6.30am on Sunday taking the total number of active cases to 48,447.
There are 726 patients being treated for COVID-19 in hospital and another 47 people are in intensive care.
Deputy Premier Steven Miles says seven of the nine deaths were aged care residents and only four of the dead had received two doses of a vaccine, and none had had a booster.
"The staff and the residents should all be double vaccinated and boosted," Mr Miles told reporters on Sunday.
"Now they're not, we know they're not because it's coming through in the death figures.
"We can't get data though to tell us how many residents have been boosted, which aged care facilities are all boosted, which are below targets, where the Commonwealth has been and where they haven't been, and so it's very difficult to see where we can assist.
"We've requested that data, it hasn't been provided to us and as you've seen over recent days, in particular, if more people were boosted, then less people would be dying."
The deputy premier said the impact of staff shortages due to isolation requirements and supply chain issues were worsening the situation in the state's aged care homes.
"We've got people now who have been isolating or feeling very isolated - the impact on their mental health is significant," he said.
"They're not getting the regularity of care that they used to, whether that's bathing or other assistance.
"They're not getting in some cases the medication and medical care that they would normally receive because their facility has staff off with COVID, or because they've been exposed, potentially exposed to COVID."
Meanwhile, Mr Miles said rapid antigen tests have arrived ahead of the return of children to schools on Monday after it was delayed two weeks due to the states outbreak.
He said the delay had helped relieve pressure on the state's health system, but said the return of class would increase the spread of COVID-19.
Chief Health Officer John Gerrard said some children will get sick enough from the virus to be admitted to hospital after schools return on Monday.
"Hospitalisations associated with the children themselves I would not expect to be in very large numbers," Dr Gerrard said.
"There will be some, but not large numbers."
The chief health officer also refused to comment on any trigger point for potentially shutting down individual schools, saying that was "very unlikely" and only a "last resort".
