Southeast Queensland, Townsville and two northern islands will begin a three-day lockdown at 6pm after two new COVID-19 cases in the community.
Premier Annastacia Palaszczuk is furious after revealing one new case involves an unvaccinated clerical worker who sat outside the coronavirus ward at the Prince Charles Hospital in Brisbane.
The 19-year-old woman travelled while infectious from her Sandgate home to Brisbane airport with her family. They then flew to Townsville and visited Magnetic Island before flying home again.
The woman tested positive on Monday. One of her close friends and two of the four family members she lives with are now sick. They are all awaiting tests.
The other case is one of the 170 miners who returned to Queensland from a Northern Territory mine where a worker tested positive for the highly-infectious Delta strain.
The man is the second of those 170 workers to return a positive result but has been isolating since very soon after returning to Queensland and Chief Health Officer Jeannette Young considers him a relatively low risk.
The premier said a short sharp lockdown was unavoidable with four major COVID risks bubbling away in the state, and north Queensland now exposed. The lockdown will begin at 6pm on Tuesday, and lift at 6pm on Friday, unless the situation worsens.
It covers residents of Brisbane, Ipswich, Logan City, Moreton Bay, Redlands, Sunshine Coast, Noosa, Somerset, Lockyer Valley, the Scenic Rim, the Gold Coast, Townsville, Magnetic Island and Palm Island.
Ms Palaszczuk expressed anger that there's been another case of a frontline worker going to work without being vaccinated.
"She works as a receptionist outside the COVID ward ... she should have been vaccinated but was not. I'm absolutely furious about this," she said.
It's not yet clear if she became infected at the hospital, or might have picked up the virus from another source. It's also not yet known if she has the Delta variant, or possibly the Alpha variant which is also circulating in Brisbane.