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Victorian Health Minister Martin Foley told reporters on Tuesday there were currently no exposure sites linked to the confirmed case from Sydney, who isolated with her parent on return to Victoria after visiting family interstate. The teenager's mother has tested negative to the virus.
"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," he said.
"So far, we have no reason to not believe the family, and they are solid citizens, they're doing the right thing."
The 15-year-old has visited a number of high-risk locations in the Northern Beaches, including Avalon RSL and Avalon Bowling Club. The family is currently isolating at home after the teenager returned a positive test on Monday, Mr Foley said.