"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.
All three women are now in quarantine under police guard and will appear in Brisbane Magistrates Court on September 28.
Legal firm Creevey Russell Lawyers Crime and Misconduct division lawyer Craig van der Hoven said anyone who knowingly transmits COVID-19 without taking precautions could face up to two years behind bars.
"The investigation into the three women who have returned from Victoria into Queensland has obviously resulted in charges", Police Commissioner Katarina Carroll said. "We are still working with the third person (to ensure contact tracing). This is not productive at all", she said.
She said previously 24 hours, Queensland Health had administered 6866 coronavirus evaluations and anybody in Brisbane's southern metro area who had some issues had been invited to have tested at among their many congestion clinics in the area.
However Queensland Police confirmed the woman had changed her mind by Thursday afternoon and was since co-operating with officers.
It comes as the women were fined by Victorian police for hosting a party of more than 30-people at their Melbourne accommodation.
Retailers have since rushed to deep-clean shopfronts and staff will undergo testing after it was revealed the woman's husband had visited one of the southeast's largest shopping centres - Westfield Garden City in Mount Gravatt - on July 26 before he was diagnosed.
She suggested that additional suburbs in Brisbane's south might be termed as hot spots in case important neighborhood spread happened.
Ms Palaszczuk warned there would be delays at the border in coming days when Queensland shuts greater Sydney out from 1am on Saturday.
The three new cases are unrelated to Muranga and Lasu.
Authorities have described the border crossing as the "perfect storm".
'As far as I'm aware they were not symptomatic while they were onsite and then called in sick the following day and then the next week were tested'.
"We will continue to have the powers we have at our disposal, to try and get that information out so that we can absolutely focus on identifying where any risk might be for our community", he said.
Queensland residents returning will have to isolate in a hotel for 14 days at their own expense.
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.