New South Wales has reported 6,324 new infections of COVID-19 and three deaths, a day after NSW Health Minister Brad Hazzard warned everyone in the state would likely get Omicron "at some point in time."
There are 520 people in hospital - 62 more patients since Sunday's numbers were reported. 55 people are in intensive care - three more than on Sunday.
Victoria has recorded 1,999 cases of COVID-19 and three deaths.
368 people are in hospital - six less than the previous day's numbers. 119 patients are in ICU - four more than the previous day.
Queensland has recorded 784 COVID-19 infections as the state government announced parents can now book COVID-19 vaccinations for their five to 11-year-olds.
The number of active COVID-19 cases in Tasmania has grown to 194 after the state reported 35 new infections on Monday.
The ACT has recorded 189 new COVID-19 cases, a new daily high for the territory.
One person is in hospital but no one is in intensive care or requiring ventilation, according to the figures reported on Monday.
The cases come amid 4266 negative results being returned.
The territory has moved to prioritise testing those who are close contacts, people who have symptoms of COVID-19 or returned international travellers, amid extremely high testing demand.
Hospitals, testing sites overwhelmed
As NSW's testing sites and hospitals come under pressure, the government has asked people not to get tested unless they have symptoms, need a PCR test to travel, or are advised by authorities to get swabbed.
"What we can't have are people sitting in testing queues which takes away from people who are unwell and who need that test because we want to get those tests back as quickly as possible," NSW Premier Dominic Perrottet said on Sunday.
"I would like everybody to think about whether or not you really need to call an ambulance, number one, and number two, [if you need to] go to hospital," Mr Hazzard added.
Queensland Chief Health Officer John Gerrard on Sunday pleaded with people not to show up at the emergency department unless they experience difficulty breathing, have chest pain or feel "significantly unwell".
Members of the public queue for Covid19 PCR tests at a clinic in Redfern in Sydney, Friday, December 24, 2021. Source: AAP/Mick Tsikas
It comes as record numbers of daily COVID-19 cases were reported on Sunday as Australians hit Boxing Day sales.
NSW posted a national record of daily infections, reporting 6,394 cases and zero deaths.
Victoria recorded 1,608 cases and six deaths. In Queensland, 714 infections were reported.
South Australia had 774 new cases, while Western Australia reported one case that tested positive while in quarantine.
Additional reporting by AAP
