Investigations have revealed a COVID positive Launceston teenager left home quarantine without a mask to go to a local supermarket with his cousin.
The IGA at Newnham between 2:20pm and 2:45pm on Saturday October 2 has been declared an exposure site.
Anyone who was there at that time needs to isolate immediately and call the Public Health Hotline (1800 671 738).
It's also been confirmed two visitors briefly attended the 15-year-old's house on Friday night, although authorities say they're not concerned as the pair was quickly identified and placed in quarantine.
Public Health Director Dr Mark Veitch says a number of close contacts have already been confirmed from the supermarket.
"The risk is - I think - still low to the wider Launceston community. Our understanding is that this person spent only a few minutes at this public site before returning to their place of residence," he said.
"The Check In Tas data is being used to identify anyone at potential risk and they're being advised to self isolate and book a test. A number of close contacts have already been identified including the shop keeper who served the pair and they're now in quarantine," Acting Premier Jeremy Rockliff said.
The teen tested positive on Saturday after returning from Victoria and being directed into home quarantine.
He's since been moved from the LGH to the Fountainside medi-hotel in Hobart.