Victoria has reported four new local COVID-19 cases as the residents along the state's northern border prepare for a bubble crackdown.
The health department confirmed all of Tuesday's locally acquired cases are linked to the state's current outbreaks and were in isolation for their entire infectious period.
It is the third day in a row no new cases have spent any time in the community while infectious, with the number of exposure sites across the state falling to 56.
Another returned traveller has also tested positive in hotel quarantine as active cases dropped to 124.
More than 22,000 test results were received in the 24 hours to Tuesday morning, while about 16,500 vaccine doses were administered at state-run sites.
It comes as Victoria bans non-essential movement across state lines because of the hovering threat of Sydney's Delta variant outbreak.
From 11.59pm on Tuesday, border-bubble residents will only be able to state-hop for six reasons including medical care, compassionate purposes, work, education, playing sport or getting vaccinated.
The new measure applies to residents on both sides of the NSW-Victorian border, who must also not travel any further than necessary for that specific purpose.
Anyone caught crossing the border for a non-essential reason could face a $5,452 fine.
