In an extraordinary warning she’s also urged holiday resorts to reject school holiday bookings from families from hot spot Victorian suburbs, describing the option as “basic pandemic management”.

“You should not be travelling to Melbourne at this time because of the rate of community transmission,’’ she said.

“Do not go interstate. My advice is even stronger, do not go down there.

“Do not take the risk. It’s not worth it and people from those hot spots are actually disregarding what their own Premier and health officials are saying.

“People from those hot spots should not be travelling anywhere, let alone interstate.”

Asked if the warning applied to business travellers despite the border remaining open she said “absolutely”.

“I call on all organisations not to interact with citizens from Melbourne, at this stage,’’ she said.

Ms Berejiklian said clearly any families who lived in those hotspot suburbs should not be travelling interstate.

“Nobody should be travelling,’’ she said.

“Please reconsider your plans if you are going to Melbourne in the next little while. You should definitely not go anywhere near those hot spots. Just do not do it.”

Ms Berejiklian said after the recent batch of 8,000 tests NSW had only one new case which related to an overseas traveller but now was not the time for complacency.

“The likelihood is there are people without symptoms walking around with the virus. We know that’s a fact. It can get out of control very quickly,’’ she said.

Earlier, Victorian Premier Daniel Andrews declared “this is not over” warning the state’s fight against COVID-19 has not been won after a spike in new cases.

Speaking this morning, he revealed “an army” of public servants would be moving through hotspot suburbs to doorknock this week, to spread the message to stick to the rules.

“There are 1864 cases of coronavirus. That’s 17 more than yesterday,’’ he said.

“So what we can be certain of is that there will be some significant community transmission within those numbers. The exact amount of that will be determined following those processes that I’ve just alluded to.

“As we said on Saturday, and indeed again yesterday, this is still with us. This is not over. And I know and understand that so many Victorian, perhaps all Victorians want this to be over. But we simply can’t pretend that the virus is gone. That the virus is somehow not in our state.

“It is here. It travels so fast. It is so infectious. That’s the battle we’re in.”

The announcement comes as one million Victorians face a return to lockdown conditions if the state cannot control the spike in new coronavirus cases and families could be banned from interstate travel.

“It doesn’t matter how many people are doing the wrong thing: everybody – everybody – will pay the price if we get to a point where restrictions either localised or across the state need to be reintroduced,’’ Mr Andrews said.

“We have seen, as we said on Saturday, many families, large families, who have gathered in numbers beyond the rules.

“That is just not on. It is not acceptable.”

The Morrison Government is pressing ahead with calls to lift border restrictions, but some states including SA and Queensland are carefully considering Victorian travellers as it prepares to reopen borders.

Victoria is now the only state grappling with a return to double digit daily cases with two new schools, Brunswick East Primary and Keilor Views Primary, closed in hotspot areas today for deep cleaning and contact tracing.

Health Minister Greg Hunt said local lockdowns remained an option if the new cases continue to rise.

“And that remains an option. But I am hopeful that with this level of testing, and this level of awareness and the relatively small number of unidentified cases, that we will be able to control and suppress those cases,’’ he said.

“I think Victoria is approaching this in the right way. Nationally, we’ve established testing, tracing and local response. That includes the potential for travel warnings in and out of the local Government area, or going further as we did in northwest Tasmania.

“So we effectively implemented this same approach where there was a significant outbreak around Burney. It was very difficult for the local population, but ultimately, it led to the control of what was a far greater outbreak in terms of cases to population number.”

Mr Hunt said that new cases were always a risk as the country reopened for business.

“What we’ve had is a spike, and we’ve always warned that as we ease restrictions, there could be spikes,” he told ABCTV.

“What we are urging people to do, particularly in the six affected local government areas in Melbourne – if you have any symptoms, please be tested. Work with the contact tracers if you’re being approached, and then practice the natural things that we’re working on – the cough etiquette, keeping the 1.5 metres. All of these elements are still critical, and at the same time, the Government’s putting very strong resources into testing, tracing and local containment.”

The local government areas affected by the fresh outbreaks represent communities where one in five Melburnians live.

There are particular concerns that some of the areas have large communities of non-English speaking backgrounds, with the Victorian government moving to door knock the affected areas.

Despite the situation in Victoria, Mr Hunt said the Morrison Government remained committed to reopening borders across Australia.

Victoria and New South Wales have never closed their borders throughout the pandemic, although the NSW Premier Gladys Berejiklian has urged people to reconsider travel to Victoria in light of the latest increase in COVID numbers.

Borders remain closed however in WA, which has raised the Victorian outbreak as one reason to delay reopening. SA and Queenslanders are considering reopening borders but keeping Victorians out until the situation is stabilised.

“We are encouraging all states to work to the national plan, and the national plan has three steps which includes the opening of borders. Individual states have to make their own decisions,’’’ Mr Hunt said.

“We’ve respected the rights of states to make their decisions, but we’re encouraging them to move forward.”