The cases include four children – two boys and two girls – a man and woman in their 20s, four women in their 30s and a man in his 40s, the state’s health department said on Monday.
Of those, three – one child and a man and woman in their 30s – are considered historical inflections.
“All of today’s cases acquired their infection overseas and have been in a medi-hotel since their arrival,” the health department said.
There is no known risk to the community.
It brings the state’s total number of coronavirus cases to 719 with 32 currently active.
The fresh infections come just days after West Australian Premier Mark McGowan lambasted the federal government for failing to provide better alternatives to hotel quarantine.
He wants the government to open military bases and Christmas Island to assist in quarantining overseas travellers, saying state hotels can’t cope.
But Defence Minister Peter Dutton has pushed back against the idea, saying such facilities are not fit for purpose.
The comments come after metropolitan Perth and the neighbouring Peel region were placed in a three-day lockdown after COVID-19 cases were linked to the Perth Mercure Hotel.
– with AAP