NSW has reported 141 new locally acquired cases of COVID-19 and two deaths, including a woman in her 30s.

At least 62 of the 141 diagnosed people in the 24 hours to 8pm on Saturday were circulating in the community for all or part of their infectious period, Premier Gladys Berejiklian says.

Forty three people are in intensive care in NSW, 18 of whom require ventilation.

Greater Sydney and surrounding regions are in lockdown until at least July 30, while three local government areas in regional NSW are in lockdown until at least 28 July, as health authorities battle to contain a outbreak of the virulent Delta strain.

Ms Berejiklian said the woman in her 30s who died had no pre-existing conditions, demonstrating the severity of the virus.

Eight people have died amid the current Sydney outbreak.

"If anybody thinks this is a disease just affecting older people, please think again ... younger people without pre-existing conditions can also fall victim to this cruel disease," she said.

The 141 cases came from a record of more than 102,000 tests.

It comes as the NSW treasurer calls for the reintroduction of the JobKeeper wage subsidy scheme amid Greater Sydney's COVID-19 outbreak and Labor demands a summit to discuss the health crisis.

But the federal government has poured cold water on Dominic Perrottet's suggestion, arguing its current support payment structure is simpler and more flexible.

Disquiet over the lockdown erupted dramatically on Saturday afternoon, as thousands marched through Sydney's CBD.

At least 57 people have been arrested over the protest action, which Ms Berejiklian said left her "disgusted".

Two men have also been charged with allegedly striking a police horse.

A team of more than 20 detectives is working to identify more of the protesters and either charge or fine them.

The latest lockdown escalation has prevented all but the most essential workers in Cumberland and Blacktown local government areas leaving those areas, joining Fairfield residents.

Ms Berejiklian has described vaccination as the way out of the outbreak, but her plea for more Pfizer stocks has been rebuffed.

Instead, NSW will have to settle for 50,000 more Pfizer doses from the federal government's national stockpile.

Three regional NSW local government areas in the state's central west are also under stay-at-home orders until at least July 28.

Local elections across NSW have also been postponed by three months to December 4.

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Huddling on the beach in a blanket to watch the penguins paddle home is usually the highlight of a trip to Phillip Island - even in the depths of winter.

But there are no tourists anywhere on the island during Victoria's fifth lockdown, and worse, there are about 30 exposure sites in the region.

Tourism makes up 44 per cent of the island's economy, worth an estimated $529 million the year before the pandemic hit.

At the Penguin Parade, the loss of 500,000 yearly international visitors meant business was down 60 per cent even before the latest lockdown.

The cancellation of the Phillip Island MotoGP event earlier in July was another major blow to the local economy, estimated at more than $40 million.

"While the good times have been good, the bad times have been bad," Kim Storey from Destination Phillip Island told AAP.

Each time restrictions ease, Melburnians desperate for a break head down to the island, even causing traffic jams on the road to the bridge.

Ms Storey said before the latest lockdown, the winter holidays and weekends had been busy, with visitors from within Victoria spending generously.

"The challenge has been the stopping and starting, with loss of bookings and loss of perishables," she said.

Tourist spots within a quick drive of major capitals, like the Blue Mountains, west of Sydney, and Daylesford, 90 minutes northwest of Melbourne, have a similar story.

Major events have been called off and a bumpy ride has been endured via reliance on domestic spending.

Austrade's national visitor survey results for the year to the end of March 2021 show spending down 42 per cent - a massive drop of $33 billion.

Dr Joanne Pyke, head of Victoria University's School for the Visitor Economy, says domestic tourists don't spend as much as those from overseas.

The tourism industry is "financially and emotionally depleted", she told AAP, with moments of "peak demand" on long weekends and school holidays bringing problems of their own.

Insecure work means many employees have drifted into industries seen as more reliable, such as health or construction, according to Dr Pyke.

"It's a global phenomenon, it's so insecure people would rather work in a supermarket than risk losing their job," she said.

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Treasurer Josh Frydenberg has confirmed Australia has secured 85 million Pfizer vaccines as booster shots that will start next year.

Delivery will begin in the first quarter of 2022 and enable booster coverage throughout the year.

"This virus is not going away," Mr Frydenberg told Sky News' Sunday Agenda program.

"There is one ticket out of this crisis and that's vaccinations."

Former Labor leader Bill Shorten said the announcement was better late than never.

"I don't think Australia should waste time for the promise ... I'm worried about the people in Sydney right now," he told ABC's Insiders program.

Given the growing crisis in NSW, the Australian Technical Advisory Group on Immunisation (ATAGI) now says any adult in the greater Sydney area are strongly recommending people receive the vaccine, regardless of which one they are eligible for.

ATAGI had previously recommended that those under 60 should only get the Pfizer jab because of the extremely rare risk of blood clotting from having the vaccine in younger people.

"That's important because we know that we have got AstraZeneca available, but we haven't seen a huge take-up," Mr Frydneberg said.

But he dismissed the idea that the AstraZenecaa vaccine is suffering from brand damage.

"No it's not, because what we now have is the spread of the virus in NSW, the dangers that poses," he said.

NSW Police Commissioner Mick Fuller agreed that the only way out of the crisis is vaccination.

"The way the Delta variant is running through, particularly in Sydney at the moment, is that I can't see us getting down to zero for some time," he told Sky News.

The state crisis turned ugly on Saturday as protesters took to the streets after weeks of lockdown in the Greater Sydney area, including violent clashes with police.

Mr Frydenberg was blunt in his thoughts on the march, saying they have no place in the middle of a pandemic.

"Stupidity writ large. Just shocking, really shocking images," he said.

"Those protesters should be condemned for, not just breaking the health orders and there for breaking the law, but for putting in danger their fellow Australians."

© AAP 2021

Daniel Andrews says it's still too early to know whether Victoria's lockdown can end as planned.

The state has recorded 11 new locally acquired COVID-19 cases, all of which were linked to known outbreaks and were in quarantine throughout their infectious period.

"The strategy is working but it's still too early for me to be able to tell Victorians what will happen at midnight on Tuesday night," the premier told reporters on Sunday.

"There is still a couple of days to go, and as we know ... things can change. This is fast-moving."

Victorian cabinet ministers and the public health team will meet on Sunday night and Monday to discuss the easing of COVID-19 restrictions.

Mr Andrews expressed his dismay at anti-lockdown protesters who massed in central Melbourne on Saturday but said he was reasonably confident it would not be found to be a super-spreader event.

The rally was brought to a violent end as police used pepper spray to clear the crowd.

Penalty notices were issued to 73 people as a result of the action. More fines are expected.

"We don't want to see people out and about selfishly putting their point of view ahead of the health and wellbeing of others," Mr Andrews said.

"Everybody is entitled to an opinion, but you're not entitled to put other people in danger.

"And that's what yesterday was about. Ultimately, selfish behaviour that puts many other people in real danger."

Mr Andrews said it had been a difficult task to shut down the mass gathering without that in itself becoming an infection control nightmare.

"People understand that Victoria Police did their very best," the premier said.

"But you know, we can't vaccinate against selfishness and these people should be ashamed. Absolutely ashamed. It's just wrong."

COVID-19 Commander Jeroen Weimar described protesters as a "small minority having a self-indulgent tantrum".

Some 32,385 virus tests were processed in the 24 hours to Sunday morning, while 17,370 Victorians received a vaccine dose at one of the state-run hubs.

There are more than 22,000 people self-isolating across the state after being deemed close contacts of positive cases, while there are more than 380 exposure sites.

© AAP 2021