South Australia could soon be home to international students after the state's Chief Health Officer signed off on a plan to allow them entry.

The plan still requires approval from the federal government, but universities have expressed their desire to get overseas learners back as soon as possible.

Under the plan, arrivals would be required to quarantine for two weeks at Parafield Airport in Adelaide's north.

READ MORE: Boy, 11, arrested following police chase across Adelaide suburb

In 2019, international students were worth over $40 billion to the local economy, with that figure down by $9 billion during the pandemic, according to the Australian Bureau of Statistics.

Overseas students already in Australia can continue to study, however, since the closure of the international borders those abroad have been barred from returning.

Adelaide CBD medi-hotels would continue to be used for returning Australians under the state's proposal.

READ MORE: Aged care worker is first mystery case in Victoria COVID-19 outbreak

Earlier this month Prime Minister Scott Morrison said the government was working on schemes to allow international students back in New South Wales, the Northern Territory as well as SA.

Mr Morrison told 2GB's Ben Fordham the commonwealth was working with states and the university sector on the proposal, which would be paid for by universities.

Michael Daley, former leader of the NSW opposition, has announced that he will once again run for leadership of the Labor party following the resignation of Jodi McKay last week.

Ms McKay stepped down on Friday after weeks of mounting pressure from within the party room and a devastating result at the crucial Upper Hunter by-election that saw Labor's primary vote plummet.

Also adding to her demise were the resignations of frontbencher Chris Minns and shadow treasurer Walt Secord.

READ MORE: Aged care worker is first mystery case in Victoria COVID-19 outbreak

Mr Daley, who is the member for Maroubra, announced his intention to run for leader again at a rally today surrounded by supporters.

He reportedly told supporters that he was "was very" sad to see Ms McKay resign and that it "should not have come to that".

In a statement released on Friday, Mr Daley thanked Ms McKay for leading the party and said she showed "great integrity".

"She was democratically elected overwhelmingly by both the membership and the caucus," he said.

"It's a shameful thing that she felt forced to go.

"I wish her well and hope that she stays in public life for a very long time."

READ MORE: Victorian government launches business package, accuses Federal Government of inaction

Member for Kogarah Chris Minns had earleir been tipped to replace Ms McKay but has yet to formally announce whether he will run.

If does chose to do so, a preferential vote will have to take place.

Mr Daley was previously leader of the NSW Labor party from November 2018 to March 2019 after defeating Mr Minns in a leadership spill.

In March 2019, he led the Labor party to an unsuccessful election. Following the loss, Ms McKay took over as leader.

Other candidates who had put their hat in ring for leader include health spokesman Ryan Park, however he was ruled out from running after an intervention from Labor headquarters, urging him it was "in the interests of party unity."

A surge in COVID-19 vaccine demand has forced workers to turn people away from a Melbourne vaccination hub and overloaded a dedicated phone line.

Scores of people who queued in near-freezing temperatures at the walk-in line at the Royal Exhibition Centre in Melbourne on Sunday morning were turned away.

Video taken from outside the centre showed a female medical worker stepping outside to inform those waiting there were no Pfizer vaccines available for walk-ins.

"Please stop yelling at me," she can be heard saying.

"It's not fair. I'm doing my best."

READ MORE: Aged care worker is first mystery case in Victoria COVID-19 outbreak

After apologising for a lack of jabs, the woman was hit with a barrage of questions before walking back inside.

"I've been here in the cold for an hour waiting and now they've come out and said there is no Pfizer for walk-ins," one woman who had been queuing told 9News.

"You can't get through on the phones, what are we supposed to do?

"I'm looking after my mum who's not well. She's really worried."

READ MORE: More than 150 exposure sites in Victoria as movements of COVID-19 cases traced

The federal and state governments have urged Victorians to get vaccinated as the state battles a new outbreak.

One of the many queuers said they had been at the centre for three consecutive days attempting to get vaccinated.

Another said they had tried to call the Victoria Health vaccination line hundreds of times without success.

"I've tried 200 times to call the line and I can't get through," the man said.

"The ineptitude is just staggering."

A number of people were able to receive the Pfizer jab in Geelong, some making the trip down from Melbourne.

Deputy Prime Minister Michael McCormack urged Victorians to remain calm.

"It's not a race," Mr McCormack told reporters today.

"We don't want to see panic. We want people to be alert and not alarmed."

Prime Minister Scott Morrison, who is in New Zealand meeting with NZ Prime Minister Jacinda Ardern echoed Mr McCormack's sentiment.

"We will continue to support Victoria, to get Victoria open and do everything we can to ensure Victoria does not close itself again," Mr Morrison said via video.

Acting Victorian Premier James Merlino said the Commonwealth vaccination program had been delayed.

"The reality is, outside of Howard Springs, there is no alternative quarantine facility outside of hotel quarantine," Mr Merlino told reporters on Sunday.

He said this made further COVID breaches inevitable. Leading epidemiologist Mary-Louise McLaws agreed.

"Hotels are built like your home. They're not built as proxy hospitals," she told 9News.

"Their airflow change isn't anyway near 10 full changes with fresh air every hour per person."

READ MORE: Victorian government launches business package, accuses Federal Government of inaction

Currently, there's no online booking system for those seeking a jab, meaning all appointments must be booked over the phone. Some people told 9News they would not be returning tomorrow.

Health Minister Greg Hunt was able to receive his second AstraZeneca jab on Sunday.

Victorian Health Minister Martin Foley told people not to give up trying to get through to the vaccination booking line.

He reminded people they could also contact their GP about booking, with more due to join the vaccination program.

Four teenagers are recovering after being stabbed by a group of gatecrashers during a brawl at a party in Sydney's east.

The young men, aged between 16 and 18, were attacked when a fight broke out at a 21st birthday celebration in Malabar.

"One was to the back, one was to the chest," NSW Ambulance Acting Inspector Lucky Phrachanh told 9News.

"There was another male that was stabbed in the leg and another that looked like a defensive wound to the hand."

The injured teens were rushed to hospital, two of them suffering from punctured lungs.

Police said a group of unknown men arrived outside the party on Adams Avenue before an altercation erupted just after 10pm.

"Everyone was going at it. There wasn't one person who wasn't throwing a punch," witness Annabelle Lingwood told 9News.

Ms Lingwood was sitting in her car when the fight unfolded.

"They were attacking each other. It was really aggressive, very violent. And I was like 'oh my god, I'm going to get attacked'".

Police are now investigating the incident.

Ashburton residents have endured a long night, awaiting possible evacuation as the river continues to rise following heavy rain throughout the day. Ashburton is preparing for mass evacuations as the Ashburton River rises and heavy…

The father of three children killed in a horror crash on a Sydney street has suffered further agony after the family's roadside memorial was cruelly stripped away.

Leila and Danny Abdallah lost three children Antony, Angelina and Sienna last year when a drunk driver ploughed into a group of seven children as they walked to buy ice cream in Oatlands.

In the horror, the Abdallahs also lost a niece and cousin with the death of a fourth member of the group, Veronique Sakr.

READ MORE: Family of children killed in Sydney crash 'devastated' as memorial garden plan rejected

Today, Mr Abdallah returned to the site of the crash to rebuild the family's precious memorial which had been partly removed, he believes, during the night.

"Last night I drove past and it felt like a knife was put in my heart," he wrote in a Facebook post.

"Somebody had the nerve to strip down my kid's pictures and strip down the temporary memorial on Bettington Road where the kids passed away.

"Obviously they didn't have the courage to do it in the day. It was done at night."

Mr Abdallah expressed his disappointment at someone's decision to remove the memorial without first speaking with him, particularly given there are similar memorials for others lost to car incidents all across Australia.

READ MORE: Family of children killed in Oatlands crash focused on forgiveness

"This is legal and I am not breaking the law, it's public space and we are allowed to have it there," he wrote.

"This is the last memory I have with my children. Memorial or no memorial that place will always been reminded of those beautiful children having their lives cut short.

"I hope and pray we can have something permanent in the near future. Count your blessings on what you have and to worry about four pictures on the side of the road that mean so much to grieving parents and the greater community. There are worse things to worry about."

The vandalisation of the memorial comes a month after the Abdallah family's home in Telopea was targeted when two men stormed the property and ransacked the home.

Earlier this month, the driver responsible for the deaths apologised to the families involved.

Samuel Davidson was drunk behind the wheel of his car when he crashed into the group of children.

A report following the incident found he was travelling up to 133km/h in a 50km/h zone and was moving about 111km/h at the time of impact.

He has since been convicted on four counts of manslaughter with his punishment yet to be decided by the court.

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