Victoria reported no additional locally acquired coronavirus cases on Thursday morning after the virus seeped into the state from NSW.
The Department of Health and Human Services (DHHS) tweeted there were a total of 10 new cases for the 24-hour period to Thursday, however all of them were reported on Wednesday.
Melbourne was put on high alert after the emergence of two separate outbreaks – both linked to Sydney's surging Delta outbreak.
Masks mandatory again in Victoria
From Thursday, anyone in Victoria aged over 12 will be required to wear a mask in all indoor settings, including schools and workplaces, unless an exception applies.
Further restrictions are expected to be announced later today when health authorities front the media.
AAP understands Victorian ministers and public health officials are holding meetings on Thursday morning to discuss reimposing restrictions such as caps on crowd limits and visitors permitted in homes.
In the 24 hours to midnight, the state received 27,061 tests and administered 15,161 vaccine doses.
Cases linked to two outbreaks
Most of the new cases in Melbourne's latest outbreak have been linked to the Ariele Apartments in Maribyrnong, where removalists from NSW, who have since tested positive to COVID-19, were working on July 8.
Another case of community transmission occurred at Craigieburn Coles on Saturday, when a man contracted the virus from a member of a family that recently returned from NSW.
The family of four have all progressively tested positive since Sunday. They live in the local government area of Hume and were granted a red zone permit to return from NSW.
A teacher from Bacchus Marsh primary school, who lives in Barwon, was also among the new cases, having reportedly attended an AFL match between Carlton and Geelong at the MCG on Saturday with an infected friend who lives at the Ariele Apartments.
A positive case was also linked to Barwon Heads Primary School.
More than 70 exposure sites have been listed across the state, with a range of DFO Uni Hill stores in Bundoora and an Epping medical centre added to the list late on Wednesday.
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