From Monday, Victoria is classified a low-risk region with people allowed into WA provided they self-isolate for 14 days and get tested for the virus.

NSW and Queensland remain medium-risk states, meaning travellers cannot enter WA without an exemption.

The Queensland measures are in force because of extra concerns surrounding the discovery of the more virulent UK strain of the disease found in Brisbane.

Premier Mark McGowan says there has been no health advice yet suggesting those arrangements should be changed.

"Generally the eastern states are doing pretty well, Queensland and Victoria in particular," Mr McGowan said.

"New South Wales has had it ticking along for a while now.

"I just urge all states to get it under control as quickly as possible. That allows borders to come down."

WA reported just one new coronavirus case on Sunday, a woman in her 30s who recently returned from overseas.

She remains in hotel quarantine along with 13 other people with active infections.

Australian Associated Press