A young Victorian who tested positive to COVID-19 after being in Sydney's northern beaches area made a stop in Gundagai, NSW Chief Health Officer Kerry Chant says.
Victorian health authorities confirmed the case on Tuesday morning but were slow to confirm the exact stopping place along the Hume as it was above the border.
Dr Chant said the 15-year-old girl and her family had stopped at Oliver's Real Food Outlet at Gundagai, mid-to-late afternoon on Friday, December 18.
"Advice will be going out to the community in Gundagai who may have also accessed that food outlet," Dr Chant said.
Takeaway outlets at Gundagai are popular stopovers for people travelling the Hume Highway between Sydney, Canberra and Melbourne.
Victorian authorities have said the family have done the right thing, and exposure sites in Victoria were limited as the family was isolated before getting tested.
The girl visited several exposure sites in Sydney's northern beaches area before being driven back to Victoria by a parent.
The parent has so far tested negative and the family is isolating at their home in the Moonee Valley area.
They stopped at Gundagai's Oliver's Real Food on Thursday before arriving in Melbourne either late that night or early Friday.
The girl returned a positive test on Sunday, but it was only publicised on Tuesday.
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The NSW Health website will have instructions for people who attended Oliver's at Gundagai.
According to NSW Health, anyone who attended Oliver's Real Food at Gundagai on Friday December 18 between 5.30pm and 6.05pm is a casual contact and should isolate until receiving a negative test result and continue to monitor for symptoms.
Victorian Health Minister Martin Foley on Tuesday said there were no known exposure sites on the Victorian side of the border and close contacts of the family were being contacted.
Mr Foley said the family had done the right thing.
"They have isolated when they returned to Victoria and as a result of the awareness of the situation in Sydney, the young person has sought testing."
"We've been working with our NSW colleagues who have now listed that site as an exposure site in NSW, but at this point no exposure sites have been identified in Victoria," Mr Foley said.
Mr Foley was originally confused about the location of the stop as it was outside Victoria, but NSW Health confirmed details.
Victoria has shut its border to people travelling from greater Sydney and the NSW Central Coast, while people travelling from or through regional NSW need a permit.
- With AAP