The Bolton Clarke Aged Care facility at Pinjarra Hills in Brisbane's southwest has been locked down following the positive test and there are fears other workers and residents could be at risk.
Both of the male's loved ones are yet to test positive.
Her husband is believed to have caught the virus from relatives who visited the Madtongsan IV Korean restaurant at Sunnybank on July 23, when one of the women was there.
The aged care worker is the 3rd case of neighborhood transmission connected to the cluster, after among the ladies's siblings evaluated positive previously today.
"I am still concerned; we have had this cluster of cases and we're not through it yet, so, I think this is the time to just go back and remember all those basic principles", she said.
Haja Timbo, 21, was with Olivia Winnie Muranga, 19, and Diana Lasu in Melbourne, where they hosted a drunken party at their Airbnb property that was shut down by Victorian police.
It was revealed on Wednesday Ms Muranga, a cleaner at Parklands Christian College in Park Ridge, west of Brisbane, did not self-isolate on her return to Logan, instead working three days at the private school before being later diagnosed with the virus.
All 150 staff and residents of the home are being tested. She has tested negative to Covid-19.
He said his sister waited several days in between experiencing symptoms and getting sick.
All three have since been charged with fraud and providing false or misleading documents under the Public Health Act and are due to appear in Brisbane Magistrates Court on September 28.
Queensland Police has launched a second criminal investigation and said all three women are now co-operating.
Deputy Commissioner Steve Gollschewski said police had high confidence they had all the details and information they needed in relation to the case.
Ms Carroll said she was "very disappointed" with the alleged behaviour of Muranga and Lasu, and their unidentified travel buddy.
'I'm very anxious about the second individual who has not been cooperative and has not shared where she's been, so we haven't been able to contact those venues, ' Queensland's Chief Health Officer Jeanette Young said.
New South Wales recorded 17 more cases.
People from the whole of Victoria were already banned from entering.
One of the women attended the Orion Springfield Central in Ipswich, south-west of Brisbane, on Sunday where she dined at the Peak Thai restaurant about 6.30pm.