Victoria's chief health officer Brett Sutton said the final exposure sites relating to Victoria's most recent coroanvirus outbreaks have come down.

But he warned the outbreaks aren't over.

"It doesn't mean risk of these outbreaks are over," he said. "We have to make sure nothing is circulating residually.

"But we are in a very good position. That's not a boast. We have all been humbled by this virus and this is an opportunity to thank contact tracers and public health units but most of all every Victorian. It has been a huge collective effort from people across the state."

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Dr Sutton said Victoria is currently managing six primary close contacts related to the Northern Territory gold mines outbreak with all close contacts quarantined and returning negative test results.

Dr Sutton said West Australia's Perth and Peel regions - which entered lockdown early this morning - and the local government areas in Queensland that will go into a snap three-day lockdown would be considered red zones.

"People on fights to Victoria scheduled to leave (before 1am on June 30) can enter Victoria on their orange zone permits," he said. "Victorians with red zone permits can enter Victoria in a controlled way but you will need home quarantine for a 14-day period.

"People coming from orange zones are required to isolate and get tested within three days of returning and stay isolated until they have tested negative."

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Health minister Martin Foley said Victorian public health teams are clarifying the changes related to aged-care workers receiving mandatory vaccines and the Astra Zeneca vaccine becoming available to people under the age of 60.

"The prime minister made number updates (last night) and we are working our way through the implications of that late night statement," Mr Foley said. "Key among those is mandating vaccines among aged care workers. We are working with the commonwealth as to how we implement that.

"Separately, the prime minster said the commonwealth would further indemnify general practitioners to administer the Astra Zeneca to anyone under 60.

"The Department of Health has reached out to the commonwealth to request whether that eligibility is formally changing. When we have received this advice we will implement it and work quickly to continue to vaccinate as many Victorians as we possibly can."

Mr Foley said public health teams are also continuing to manage emerging risks from interstate outbreaks.

"It is clear that Australia as a nation is dealing with a heightened risk level on a scale not seen for well over a year," he said. "It is a very serious position the country finds itself in. Our public health response reflects that seriousness.

"Victoria has travel restrictions in place for most states. Victorians know how serious this is and our support goes out to every state dealing with outbreaks.

"Every person (needs to be) doing the right thing - coming forward to get vaccinated when they can, following public health orders, checking in, maintaining social distance. These are things we know as Victorians, will get us through."

8.25am

VICTORIA has recorded two new COVID-19 cases as Australia races to deal with escalating outbreaks in multiple states and territories.

Both coronavirus cases are in hotel quarantine. It is the third consecutive day Victoria has seen no new locally-transmitted cases.

Victoria has ramped up its border restrictions in a push to stave off the sorts of outbreaks hitting other parts of the country.

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The changes have coincided with the start of the school holidays.

The situation is wreaking havoc on central Victorian tourism operators including one travel agent who has described the situation as "diabolical".

Victoria Police has begun a border operation and deployed staff to stop anyone travelling into Victoria from red zones.

COVID-19 testing continued throughout the state on Monday.

Authorities finalised 20,723 tests in the 24 hours to midnight, the Department of Health said in a Tweet this morning.

They administered another 18,597 vaccinations.

On Monday night Prime Minister Scott Morrison revealed the National Cabinet would mandate all residential aged care workers have at least one vaccine dose by mid-September at the latest.

It would be a minimum requirement for working in a residential aged care facility, Mr Morrison said.

"That will be implemented in a partnership between the commonwealth and the states," he said.

Aged care facilities would also be able to get grants from a $11 million pool to provide staff with vaccination leave.

"That can also involve situations where someone is experiencing discomfort after a vaccination," Mr Morrison said.

He said state and federal leaders had also been briefed on a ramp up of the national vaccine program, and a "wargaming process" for the second half of the year when supplies are expected to increase significantly.

The National Cabinet also made a number of changes to hotel quarantine testing regimes.

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