Victoria's Acting Chief Health Officer announced all of New South Wales and the Australian Capital Territory would become a red zone under the state's travel permit system.
Victoria has recorded no new COVID-19 cases after the effective closure of the border with New South Wales and the ACT came into effect last night.
There were 19,239 test results received yesterday, and 12,005 doses of vaccine were administered at state-run sites.
Yesterday, Victoria's Acting Chief Health Officer announced all of New South Wales and the Australian Capital Territory would become a red zone under the state's travel permit system.
The changes came into effect from 11:59 pm on Sunday.
It means the Victorian border is effectively closed to New South Wales and the ACT – except for Victorian residents returning on a red zone permit for 14 days of quarantine — and for people with exemptions.
The Chief Minister of the ACT, Andrew Barr, said he was frustrated by Victoria's decision to shut its border to Canberrans.
Canberra has not recorded a local COVID-19 case in a year.
Mr. Barr has called for all states to remove restrictions on the ACT as soon as possible.
"At this time, there is very little justification to consider the ACT as a COVID affected jurisdiction that requires the highest level of travel restrictions," he said.
Deakin University epidemiologist Catherine Bennett said health authorities were right to wait before making a decision on closing the border.
"It probably would have been too pre-emptive if you closed the borders when you don't have any signal that you've got even exposure sites outside of Sydney, let alone potential cases," she said.
"The case numbers were still lower than they are in these last couple of days where they've really spiked up to 77 cases a day."
Meanwhile, Victorians are being offered an incentive to register their Myki public transport cards to help contact tracers.
From today, the first 60,000 people to register their Myki card will receive a $10 credit.
Public Transport Victoria said it could take up to 40 days for the credit to appear in accounts.