"I think we can be quite positive about making some announcements tomorrow," Mr Andrews said.

The Premier Daniel Andrews brought in a snap lockdown a fortnight ago to ward off the highly contagious UK variant of the virus spread in the Holiday Inn quarantine hotel outbreak at Melbourne Airport.

"But Victorians were equal to that challenge," he said. "That's what makes me so proud. No state's been through as much as our state ... I think tomorrow will be a positive day for all."

Victorians are allowed a maximum of five visitors to their homes and public gatherings are limited to 20 people outdoors.

The Health Department on Thursday confirmed Victoria has recorded no local or overseas acquired cases of the virus, following 18,282 tests.

There remain 16 active cases of COVID-19 in the state, four fewer than Wednesday.

It comes as authorities late on Wednesday night declared Auckland a 'red zone'.

Anyone arriving in Victoria from Auckland from Thursday will be required to enter mandatory hotel quarantine for 14 days.

Those who landed on Tuesday have been asked to get a COVID-19 test immediately and quarantine until they receive a negative test result.

At least eight cases have been linked to a cluster at a high school in Auckland, triggering a three-day lockdown.

Australian Associated Press