Residents in the suburbs of Dallas, Roxburgh Park, Broadmeadows, Preston and West Heidelberg are being called on to get tested if they have any coronavirus symptoms.
Both East Preston Islamic College and Croxton School will remain closed for the next two weeks.
The Royal Children’s Hospital will set up a testing site at the Croxton School for staff and families from Sunday. There are more than 15 testing sites across the northern suburbs, including at East Preston Islamic College.
Of Victoria's seven new cases, there were three cases reported in Darebin, and single cases in the local government areas of Banyule, Greater Dandenong, Maribyrnong and Wyndham.
There were two mystery cases added to Victoria's total across 14 days on Saturday. Melbourne's 10 mystery cases between October 8 and October 21 are located in the postcodes 3024, 3025, 3029 (two cases), 3047, 3073, 3081, 3128, 3152 and 3173.
Non-aged care outbreaks with the highest number of active cases include:
- Eastern Health Box Hill Hospital (seven active cases, total 15)
- South-eastern community (four active cases, total 9)
- Chadstone Shopping Centre (three active cases, total 39)