NSW Premier Gladys Berejiklian will this week release COVID-19 modelling on the looming peak in case numbers and hospitalisations as the state records more than 1400 local cases.

"All the modelling indicates to us that the peak is likely to be here in the next week or two," the premier said on Sunday.

"The peak in hospitalisation and intensive care is likely to be with us in October."

Ms Berejiklian said she would this week release the modelling on case and hospitalisation predictions, all of which informs health rules.

"It is important to be as open and transparent as possible but we also want to be clear about the modelling changes every single day," she said.

NSW reported 1485 new locally acquired cases of COVID-19 and three deaths on Sunday as authorities battle to contain the spread of the virulent delta strain through the locked down state.

The three deaths in the 24 hours to 8pm on Saturday were a woman in her 50s who'd had one vaccine dose, who died at Blacktown Hospital, a woman in her 70s who died at Campbelltown Hospital and a man in his 70s who died at Liverpool Hospital, both of whom were unvaccinated.

The death toll for the current NSW outbreak is now 126.

There are 1,030 COVID-19 patients in NSW in hospital, with 175 in intensive care and 72 who require ventilation.

The premier said 40 per cent of the state's population was now fully vaccinated.

"That is an incredible milestone to have reached given where we were a few months ago," she said.

Ms Berejiklian also flagged that home quarantine would eventually be an option for fully vaccinated citizens returning home to Australia.

NSW Health's Dr Jeremy McAnulty asked people in the state's regions to come forward and get tested for even the mildest of symptoms.

Meanwhile, an isolation hub, including 30 caravans, is being established at Wilcannia in the state's far west where more than 13 per cent of the town's predominantly Indigenous population have caught the virus.

The government will make a decision as to whether restrictions can ease in regional NSW after Friday.

At least 73 per cent of NSW residents aged 16 and over have had at least one vaccine dose, with more than 7.3 million jabs administered in the state.

A survey of more than 6,500 hotel staff across NSW has found the majority of employees support the premier's calls for double vaccination and more than half will be fully vaccinated by the end of October.

The Australian Hotels Association NSW Chief Executive Officer John Whelan said it was encouraging that 63.5 per cent of employees surveyed believed it should be a requirement for all hotel employees to be fully vaccinated.

"If you want to get down to the pub when we re-open, get vaccinated now," Mr Whelan said.

"You'll need two jabs and you don't want to be left out when things finally open up."

A smaller number (6.6 per cent) of staff said they did not intend to be vaccinated while 9.5 per cent were undecided.

© AAP 2021

A three-year-old boy missing for more than two days from the NSW Hunter region is the subject of an extensive search and police task force.

More than 130 people on Sunday continued to look for Anthony "AJ" Elfalak who has autism and is non-verbal.

He went missing about 11.45am on Friday from his family's 260-hectare farm at Putty, near Singleton and search efforts have continued since.

"Searchers hit the ground this morning with over 130 actively searching this large property," Superintendent Tracy Chapman told ABC TV.

"Detectives assisted by specialist resources have formed (a) task force ... to investigate the circumstances surrounding the missing three-year-old."

AJ's relatives fear he may have been taken from the property, family friend Alan Hashem wrote in a Facebook post, appealing for community members to keep any eye out for the child.

"No words other than, 'broken', we will not stop, until we find this precious boy, AJ Elfalak," he wrote on Saturday night.

NSW police have issued a geo-targeted message asking people in the area to look out for the child.

Volunteers are assisting police on foot and on dirt bikes.

Divers also searched and drained a large dam on the property.

AJ is believed to be wearing a grey jumper and pants, as well as sneakers, and is described as being of Mediterranean or Middle Eastern appearance, with short, dark hair.

Anyone with information is urged to contact Crime Stoppers.

© AAP 2021

NSW has reported 1485 new locally acquired cases of COVID-19 and three deaths as authorities battle to contain the spread of the virulent delta strain through the locked down state.

Premier Gladys Berejiklian said 40 per cent of the state's population was now fully vaccinated.

"That is an incredible milestone to have reached given where we were a few months ago," the premier said on Sunday.

The three deaths in the 24 hours to 8pm on Saturday were a woman in her 50s who'd had one vaccine dose, who died at Blacktown Hospital, a woman in her 70s who died at Campbelltown Hospital and a man in his 70s who died at Liverpool Hospital, both of whom were unvaccinated.

The death toll for the current NSW outbreak is now 126.

There are 1,030 COVID-19 patients in NSW in hospital, with 175 in intensive care and 72 who require ventilation.

Meanwhile, police, fire and emergency services staff in Sydney's coronavirus hotspots will be jabbed in big numbers on Sunday as the state targets them in a "super vaccination blitz".

After announcing a record day for case numbers with 1533 positive cases on Saturday, Mr Hazzard said the government wanted to make sure all frontline workers are vaccinated, describing Sunday as a "golden opportunity" for any hold-outs.

At least 73 per cent of NSW residents aged 16 and over have been vaccinated at least once, with more than 7.3 million jabs administered in the state.

A survey of more than 6,500 hotel staff across NSW has found the majority of employees support the premier's calls for double vaccination and more than half will be fully vaccinated by the end of October.

The Australian Hotels Association NSW Chief Executive Officer John Whelan said it was encouraging that 63.5 per cent of employees surveyed believed it should be a requirement for all hotel employees to be fully vaccinated.

"If you want to get down to the pub when we re-open, get vaccinated now," Mr Whelan said.

"You'll need two jabs and you don't want to be left out when things finally open up."

A smaller number (6.6 per cent) of staff said they did not intend to be vaccinated while 9.5 per cent were undecided.

© AAP 2021

A three-year-old boy is still missing almost two days after his disappeared from his family's rural property in the NSW Hunter region.

Hundreds of volunteers and police have been scouring bushland for Anthony "AJ" Elfalak around his family's 260 hectare farm at Putty, near Singleton, since he went missing about 11.45am on Friday.

Police were still searching for toddler, who has autism and is non-verbal, as of 7am on Sunday.

Officers were looking into whether an amber alert needed to be issued, indicating AJ had been abducted on Saturday, but are yet to do so.

"At this point in time AJ remains missing, and our search continues," Superintendent Tracy Chapman told reporters on Saturday.

AJ's relatives fear he may have been taken from the property, family friend Alan Hashem wrote in a Facebook post, appealing for community members to keep any eye out for the child.

"No words other than, 'broken' we will not stop, until we find this precious boy! AJ Elfalak," he wrote on Saturday night.

NSW police have issued a geo-targeted message asking people in the area to look out for the child.

More than 100 volunteers are assisting police on foot and on dirt bikes, but police discouraged any more volunteers from coming forward to search on Saturday.

Divers also searched a large dam on the property, which was also drained during the search.

AJ is believed to be wearing a grey jumper and pants, as well as sneakers, and is described as being of Mediterranean or Middle Eastern appearance, with short, dark hair.

Anyone with information is urged to contact Crime Stoppers.

© AAP 2021