New lockdown restrictions will be imposed on the Perth and Peel regions for three days after Western Australia reported one new COVID-19 case in a traveller returning from Sydney.
State health minister Roger Cook said the new case was a woman who had lunch at Lyfe Cafe in Bondi, and returned to Perth on 20 June, where she has since tested positive for the virus.
Mr Cook said authorities are "assuming she has the Delta variant".
The new rules in WA will include a 30-person limit on all private gatherings; a 150-patron limit on venues and events including weddings and funerals; mandatory masks for hospital staff and visitors, and anyone who travels to a regional area; and restricted travel to remote Indigenous communities.
"These are very proactive, deliberate and aggressive responses to a potential threat to the Western Australian community," Mr Cook told reporters on Sunday.
Queensland confirms two cases of coronavirus
Earlier on Sunday, Queensland Premier Annastacia Palaszczuk confirmed two new cases of coronavirus in Brisbane, and a third case in hotel quarantine.
The Premier said one of the cases did not appear to have any symptoms while out in the community, noting the strain was not the Delta variant.
"This is not the strain that is currently circulating in Sydney. This is the Alpha strain, which is the UK strain. But we are still concerned," she said.
One case is a worker at the Brisbane airport DFO that was previously listed as an exposure site.
The second case, the partner of that worker, works on the Sunshine Coast.
Health Minister Yvette D'Ath said border declaration passes will become mandatory for anyone who has been in NSW, including border regions, from 1am on Monday.
Dr Young urged Queenslanders to reconsider plans to travel to NSW because infectious people from Sydney could be anywhere in that state and exposure sites could grow.
"People should really reconsider their need to go anywhere in NSW," she said on Friday.
"If it's urgent, unavoidable, of course they should travel, but if it's not perhaps they should think about holidaying in Queensland."
- Additional reporting by AAP.
