Queensland will open a mass vaccination hub in Brisbane on Wednesday amid more signs the COVID-19 threat in the state's southeast is easing.
But concerns remain high in Cairns, which is in a three-day lockdown after a marine pilot infected a taxi driver with the highly transmissible Delta variant.
Authorities are scrambling to identify every single contact of those two cases, and get them into quarantine.
Chief Health Officer Jeannette Young believes the marine pilot infected the taxi driver during a trip to the airport. The marine pilot then flew to Brisbane.
It's not clear why the taxi driver wasn't identified as a close contact of the marine pilot who tested positive last week.
But the failure means he was active and infectious in Cairns for 10 days, four of them behind the wheel of his taxi.
Dr Young said it was "vital" that everyone in Cairns and nearby Yarrabah stays home during the three-day lockdown.
"We need to work out all the contacts of the taxi driver, and reassess all the contacts of that marine pilot who brings ships in through the reef," she said.
A rugby ground, a tavern and a supermarket are among the exposure sites listed in Cairns.
Queensland has reported four new community virus cases, none of which were detected in Cairns as the far north enters its first day of lockdown.
Monday's cases are all linked to the cluster in Brisbane's west and each has been in quarantine for their entire infectious period.
His infection has now been linked to a marine pilot who tested positive last week, Premier Annastacia Palaszczuk said on Monday.
"The marine pilot actually travelled in that person's taxi, so a lot of contact tracing is now happening," Ms Palaszczuk said.
"It's great to know that linkage has been done."
A rugby ground, tavern and supermarket were added to the list of exposure sites in the Cairns area on Sunday afternoon.
Meanwhile, 11 local government areas in the state's southeast have emerged from an eight-day lockdown on Sunday.
Many rules have been relaxed in Brisbane, Ipswich, Logan City, Moreton Bay, Redlands, the Sunshine Coast, the Gold Coast, Noosa, Somerset, the Lockyer Valley and Scenic Rim.
Residents are still subject to a number of restrictions until at least 22 August including mandatory mask-wearing, a limit of ten visitors to a home and a one person per four square metre rule. Up to ten visitors can now gather in public spaces.
Schools will reopen but all high school students must wear masks at school and travelling to and from school. All staff must also wear masks and no inter-school sport is allowed.
More than 11,000 people remain in home quarantine, mostly in Brisbane.
Queensland recorded one additional case in hotel quarantine.
