Victoria has recorded zero new COVID-19 cases in a 24-hour period for the first time in more than three weeks.
The latest figures released by the health department showed it was the first time Victoria did not record any new cases since July 11.
The zero day was detected from 30,117 test results processed on Tuesday.
There are now 99 active cases of coronavirus in the state, including those in hotel quarantine.
More disadvantaged parts of Australia, including COVID-hit southwest Sydney, have some of the country's lowest vaccination rates.
Ballarat has more vaccinated people than the majority of people, but is lagging behind Bendigo and Geelong.
Almost one in four people aged of 15 are fully vaccinated in Ballarat.
Just 14.6 per cent of people aged 15 and older in southwest Sydney have received both vaccine doses as the city's coronavirus outbreak worsens.
The federal government has released data detailing vaccination rates across Australia from the start of the rollout up until Sunday.
IN OTHER NEWS
None of the people hospitalised in Victoria with coronavirus following a recent Delta strain outbreak was fully vaccinated, although two had been given their first jab.
In his daily update on Tuesday, Chief Health Officer Brett Sutton said there were 10 COVID-19 positive patients in hospital, two of whom were in intensive care including one on a ventilator.
Statistics, obtained by AAP, show two of those cases were partially vaccinated before their admission to hospital.
Five patients were eligible but had not received their first dose, two were ineligible as they were under 40 years, and one was an unvaccinated returned traveller in hotel quarantine.
Of the two partially vaccinated people, one was in their 50s and the other 70 years and over.
Meanwhile, the Victorian-NSW border bubble tightened for residents from 11.59pm on Tuesday, banning non-essential movement across state lines.
Border bubble residents are now only able to state-hop for six reasons including medical care, compassionate purposes, work, education, playing sport or getting vaccinated.
In another change taking effect in Victoria from Wednesday, group booking limits have been scrapped for hospitality venues, tours and gyms but density limits remain.
On the back of the state's third day without a "wild" case, Professor Sutton said authorities would consider removing a ban on home visits at the end of the current two-week restrictions on August 10.
"We'll have a long tail to this outbreak," he said on Tuesday.
"There might be a week or more of a trickle of cases and we need to make sure we can clear those remaining 3000 primary close contacts, and make sure no one has been out in the community during their potentially infectious period that might kick this off again."
We have removed our paywall from our stories about the coronavirus. This is a rapidly changing situation and we aim to make sure our readers are as informed as possible. If you would like to support our journalists you can subscribe here.