Two more Queenslanders have been diagnosed with COVID-19 and more than 200 hospital staff are in quarantine as the corrective services cluster grows.
A nurse working with infected patients at Ipswich Hospital tested positive for the virus, Chief Health Officer Jeannette Young says.
The other case is the sister of a student at Staines Memorial College, who was already in quarantine.
"We [also] have 222 staff at the Ipswich hospital in quarantine," Dr Young told reporters on Sunday.
"That means there is some pressure on the capacity of the hospital."
She said both new cases had links to outbreaks in the Brisbane Youth Detention Centre and Queensland Corrective Services training centre.
"In both situations the people involved have been close contacts," she said.
"In one it is a household contact situation ... The second case is one of the nurses who has been looking at one of those known cases."
Dr Young reminded Moreton Bay islands residents to get tested if they develop virus symptoms after a Russell Island woman tested positive on Saturday.
The woman, who commuted on a local ferry while infectious, is also part of the corrective services cluster that has now grown to 83 cases.
"I want to commend her for her response," Dr Young said.
"She has, after hearing all of the messages about if you can't social distance wear a mask, been doing that."
There are currently 25 active COVID-19 cases in Queensland.
Victoria reported 63 new coronavirus cases on Sunday and five new deaths as Premier Daniel Andrews revealed the government's roadmap to reopening the state.
NSW recorded 10 new COVID-19 cases, including three linked to the Sydney CBD cluster.
People in Australia must stay at least 1.5 metres away from others. Check your state’s restrictions on gathering limits.
If you are experiencing cold or flu symptoms, stay home and arrange a test by calling your doctor or contact the Coronavirus Health Information Hotline on 1800 020 080.
