NSW Health is working with Albury Wodonga Health and their Victorian counterparts in an attempt to ensure Albury hospital can continue to offer critical services, despite two thirds of its medical workforce being cut off due to border restrictions.

Health Minister Brad Hazzard and chief health officer Kerry Chant said they had been in discussions with Albury Wodonga Health about staffing now Melbourne locum doctors were no longer able to work in Albury.

Yesterday, Albury Wodonga Health revealed the Albury hospital was facing a critical shortage of doctors and might need to divert urgent cases to Wagga.

The chief executive of Albury Wodonga Health Michael Kalimnios said two thirds of the medical workforce were locums from Melbourne.

He said the emergency department would feel the impact of the staff shortfall from Thursday.

"If we're unable to source those staff we do have a critical workforce shortage and we will need to consider over the next few days alternatives," Mr Kalimnios said.

Dr Chant said NSW Health had reached out and offered support to AWH in relation to staffing to ensure it can maintain critical services.

She said the department had provided details to NSW locum agencies and assured NSW locums they do not have to self-isolate if they do shifts in Albury.

Dr Chant said they also had contingencies in place, but did not detail these.

"We do want to maintain services to the border communities and can I express my gratitude to the border communities," she said.

NSW Premier Gladys Berejiklian has warned more restrictions could be coming to NSW if there was not an increase in businesses being COVID-compliant and people wearing masks.

"I want to see a greater uptake on all those categories and if we don't see a greater uptake in the next little while, we will consider further measures in which we can increase that uptake," she said.

"So please know whilst numbers have remained stable in NSW for the past month we can't be assured of that moving forward."

Ms Berejiklian said it was very concerning that a number of mystery cases existed, where the origin of the infection could not be found.

She said for the next month, NSW residents returning from Victoria still needed to quarantine in hotels but would not have to pay.

"We don't want to see a backlog of people who can't afford it or they are having certain hardship," she said.

"We think under the circumstances it's fair to extend a mother grace."

Kerry Chant said 18 new cases of COVID-19 had been diagnosed in Victoria.

Health Minister Brad Hazzard said the virus had not gone away and pointed to its recurrence in New Zealand as evidence it was going to be present for a long while.

"We don't expect right now or in the foreseeable future this virus will disappear," he said.

Mr Hazzard called on residents to treat themselves and everyone else as if they have the disease.

Watch the NSW Premier speak below. Please allow a moment for the video to load.

10.50am

Victoria Premier Daniel Andrews has revealed 16 of the 21 deaths in Victoria in the past 24 hours were linked to aged care outbreaks.

He said two woman and a man in their 70s had died as had six women and five men in their 80s, five men and one woman in their 90s and one woman in her 100s.

Mr Andrews said 25 Victoria were currently on ventilators.

He said there had been an increase of regional cases with outbreaks in Geelong, Ballarat and Bendigo.

Mr Andrews said the outbreaks were stable and were low in numbers but coming off such a low base any additional cases were of concern.

"You've done a great job in following these rules right across the pandemic but it's very important that each and every... regional Victorian stays the course with this," he said to regional Victorians.

"I know it's tough, I know it's challenging, I know we would prefer to be at a different set of circumstances but even at low numbers, we've got to have that vigilance across the board so we can keep them low and drive them down even further."

The premier reiterated his call for travel in regional Victoria and between regional Victoria and Melbourne to be limited.

"This is an endurance test," he said.

"All of us whether we're in Melbourne or regional Victoria... need to stay the course."

Watch Daniel Andrews speak below. Please allow a moment for the video to load.

9.30am

Victoria has recorded 21 coronavirus-related deaths in the past 24 hours - a sad new record for the state.

It comes after two consecutive days where 19 Victorians died.

Victoria's death toll now sits at 267, while the national toll is 352.

IN OTHER NEWS:

The Department of Health and Human Services report another 410 cases of COVID-19 have been diagnosed in the past 24 hours.

Victorian Premier Daniel Andrews is expected to address the state later today.

Yesterday, NSW recorded 22 new cases, while 331 cases were recorded in Victoria.