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Queensland remains on alert over mystery COVID-19 cases on the Gold Coast after recording two new local cases in another part of the state.
Premier Annastacia Palaszczuk said the new cases, who were already in isolation, emerged after 9474 tests in the 24 hours to 6.30am on Friday.
The girl and a woman are linked to the Goondiwindi-Moree cluster in the state's south.
Ms Palaszczuk says authorities are more concerned about two other cases, which emerged on the Gold Coast in recent days.
She says there's a possibly of a missing link or index case who is still infectious in the community.
"So we do need to find out that link," the premier told reporters on Friday.
"And we do need to make sure that people are getting tested and getting vaccinated."
Deputy Chief Health Officer Peter Aitken said the two Gold Coast cases were genetically identical.
They're not linked to any Queensland cases, but they have some similarities with clusters in Victoria and NSW.
Dr Aitken said family members and close household contacts of the cases, one of whom is an Uber driver, have tested negative.
He said authorities were trying to see if there was a common link between them.
"See if they've come in contact together, or see if there's that one other link, that may be evident, that has brought those two people together somehow, or shared COVID between them," Dr Aitken said.
Ms Palaszczuk said despite the lack of new local cases on Friday, the Gold Coast was "not out the woods yet".
There are no immediate plans for a local lockdown.
Tighter restrictions would depend "on a whole range of circumstances, and we don't even want to entertain that at the moment".
"So far so good, but let's just see how we go if there is a rapid escalation of unlinked community transmission," the premier said.
Schoolies is set to begin on the Gold Coast on Saturday week and the premier was hopeful the event would happen.
Ms Palaszczuk also said it was still safe for Queenslanders to visit the region.
"But people just need to be mindful that we've had two unlinked cases on the Gold Coast," she said.
"That could mean there are more, we have to be careful.
"And we have to show caution and that means that people know when they feel they should put a mask on."
The number of eligible Queenslanders who are fully vaccinated will reach 70 per cent in the next few days.
When the state hits that target, home quarantine will be offered to all fully vaccinated domestic travellers who have direct outdoor, "fresh air" access to the homes and live within two hours' drive of an airport.
On Friday overall 81.11 per cent of Queenslanders had one jab and 69.39 per cent were fully vaccinated.
Queensland also recorded two new cases of COVID-19 in hotel quarantine on Friday.