A mystery COVID-19 case has been on the Gold Coast and may still be infectious in the community in Queensland, authorities say.
No new locally-acquired cases have emerged in the state after 10,041 tests in the 24 hours to 6.30am on Friday.
Deputy Chief Health Officer Peter Aitken says it's still unclear how a man who tested positive on Wednesday caught COVID-19.
The case is genomically linked to clusters in NSW but not in Queensland and the man hasn't travelled interstate recently.
"So we don't know how he's got COVID at this stage," he told reporters.
"What it does mean is that we need everyone at Gold Coast to come forward and get tested, more important to get vaccinated."
Health Minister Yvette D'Ath urged people to get tested as the person who passed on COVID-19 to the man could still be infectious in the community in Queensland:
"Someone has been on the Gold Coast, and may still be on the Gold Coast or elsewhere in Queensland, who is positive and hasn't been identified as yet," she told reporters.
Meanwhile, the minister said Queensland wasn't planning to change travel rules for South Australia after 18 new local cases emerged in there on Thursday.
She said travellers should keep a close eye on the situation though, in case things change.
"We're not making any changes at this point but we are watching it very, very closely," Ms D'Ath said.
"And we will await additional information throughout today on South Australia."
Queensland recorded six new cases in home and hotel quarantine on Friday.
Meanwhile, businesses are urging the state government to unveil more details about its vaccine mandate for venues that comes into force in two weeks.
The government will ban unvaccinated people from all venues in Queensland from December 17.
People who have not had two doses of a vaccine by then won't be allowed to work in or enter restaurants, cafes, bars, pubs, theatres, cinemas or sports stadiums from that date.
The government hasn't released formal health directions on the mandate, with Ms D'Ath saying that will happen around December 10.
Businesses want to know how the mandate will be policed, how venues listed as exposure sites will be dealt with and the rights of business owners, staff and patrons under the restrictions.
National Retailers Association chief executive Dominic Lamb says Queensland retailers will comply but they shouldn't be expected to enforce the mandate.
"Store owners are not the police," she said.
The Chamber of Commerce and Industry Queensland said the government should also reveal the next vaccine milestones for restrictions on businesses to ease or change.
CCIQ general manager Amanda Rohan said businesses only knew which restrictions would change on December 17, and nothing about what will happen beyond that date and into 2022.
"Businesses are desperate for details as to what happens after then," Ms Rohan said.
"New vaccine in the workplace rules disproportionately impact small businesses so they need to know what's next so they can confidently plan for the long-term recovery."
Some 86.84 per cent of Queenslanders have had one dose of a COVID-19 vaccine and 77.21 per cent are fully vaccinated.
