Victoria has recorded no new virus cases as health authorities race to contain a fresh outbreak in Melbourne.
The four cases mentioned in the health department’s daily tweet on Tuesday morning were confirmation of the infections that Health Minister Martin Foley outlined on Monday afternoon.
Victoria has 13 active cases, with the rest in hotel quarantine.
Acting Premier James Merlino, Mr Foley and Chief Health Officer Brett Sutton will hold a media conference in Melbourne at 9.30am.
Health authorities have now identified 10 exposure sites as they race to contain the COVID-19 outbreak.
Testing sites serving the city’s north were straining to cope with demand as people heeded public health advice over the new outbreak.
Officials hope genomic sequencing will establish the source of four new COVID-19 cases among a family in the city’s north.
Nando’s Epping and Woolworths Epping North joined Jump! Swim Schools Bundoora and Highpoint Shopping Centre as tier one exposure sites in the new outbreak, meaning anyone who attended those places at specified times must be tested and isolate for 14 days.
Futsal Brunswick, Epping North Shopping Centre, House and Party at Epping, Urban Diner Food Court at Pacific Epping Shopping Centre, Shells Coles Express Reservoir and B.T. Connor Reserve are tier two sites – meaning affected people must get tested and isolate until they have a negative result.
Also on Tuesday morning, there were lengthy delays at test sites in Melbourne’s north.
Channel Nine reported a test site at Epping had closed because of demand, while there was a two-hour wait on Tuesday morning at the Royal Showgrounds.
The family cluster – involving a man in his 30s, a man in 70s, a woman in 70s and a pre-school aged child from three households in the Whittlesea area – emerged on Monday.
Mr Foley said there was no indication the infections were linked to exposure sites visited by a Victorian man who contracted coronavirus in South Australian hotel quarantine.
The health department last week admitted it had listed the wrong supermarket as an exposure site during the outbreak earlier this month.
With the first Whittlesea man’s infectious period potentially starting on May 18, Mr Foley noted the COVID-infected returned traveller had already re-entered hotel quarantine well before then.
“We do not rule out the prospect that there is a link,” he said.
“The dates do not line up immediately so we cannot rule out if there is a missing link out there.”
Genomic sequencing results may establish if there is a link between the pair, and are expected back as early as Tuesday.
More household contacts of the cases have been put into isolation despite testing negative so far.
Victoria Chief Health Officer Brett Sutton said the first Whittlesea man is carrying a high viral load and warned the community to brace for more possible cases.
“He is likely to be quite infectious,” Professor Sutton said.
“We have to ready ourselves for any other positives, and when there are close contacts who do become positive, that raises the possibility that even a casual contact could become positive as well.”
Highpoint Shopping Centre in Maribyrnong and the Bundoora swimming school were listed as initial exposure sites.
Mr Foley flagged no immediate changes to COVID-19 restrictions, and all domestic borders remain open despite most states and territories issuing updated travel advice for recent Victorian arrivals.
The latest outbreak snapped Victoria’s 86-day streak without a locally acquired case.