There are renewed calls for Western Australia to reopen its borders as the state passes a vaccination milestone and posts a record 62 local Omicron cases.
More than half of eligible West Australians have now received a third vaccine dose.
In the three and a half weeks since Premier Mark McGowan announced an indefinite delay to WA's border reopening, the booster rate has almost doubled from 25.8 per cent to 51.4 per cent.
The premier has said he would like WA's booster rate to surpass 80 per cent before the borders open, a threshold that is likely to be reached next month.
Thirteen travel-related cases were also recorded on Monday, taking the number of active cases to 509 with no one currently in hospital.
Just 4351 people received PCR tests in the reporting period.
WA Liberal leader David Honey suggested the low test rate reflected frustration with the government over the border delay.
He urged the premier to open the borders in the next few weeks to prevent a spike in cases coinciding with the flu season.
"We know that there's going to be an impact in terms of that Omicron spike but we know that overall, the best health outcome is going to be achieved if we open the borders sooner than later," he told reporters.
Australian Medical Association WA president Mark Duncan-Smith has speculated the number of cases in the WA community could be up to five times higher than the reported figures.
The premier acknowledged over the weekend there were likely "large numbers" of cases going undetected.
An outbreak linked to Juniper's Cygnet residential care home in the Perth suburb of Bentley has grown to 17 cases, including eight residents and four staff.
The facility, which accommodates people living with dementia, has been indefinitely closed to visitors.
Juniper chief executive Chris Hall said residents were being closely monitored and all staff and volunteers were undertaking rapid antigen tests prior to every shift.
"I would also like to confirm that no Cygnet staff members have worked at any other Juniper site since the infection was first detected last week," Mr Hall said.
Brightwater Care Group on Monday said a further eight residents and two staff had tested positive at The Cove in Mandurah.
All staff and residents are being tested and the facility has been closed to visitors after two residents tested positive over the weekend.
A second Mandurah facility, the Coolibah Care retirement village, is also testing residents and staff after an agency worker returned a positive rapid antigen test.
The government is close to introducing new public health social measures which are likely to include density limits at venues.
Currently, WA has an indoor mask mandate and a requirement to provide proof of vaccination to enter virtually all public venues.
"We haven't actually made a decision on when (further restrictions) will come in, but at some point in time they will come in," Mr McGowan said.
