Western Australia could open its border to most states around the country as they already meet health requirements and have their own “generally” satisfactory border controls in place, WA’s Chief Health Officer says.

“If we are confident of the border arrangements, confident of the epidemiology, we’re mindful of our susceptibility, then I think we can continue to look at whether there are other options for the borders.

Experts have cast doubt over how realistic the 28 days of no community spread nationally would be to attain, but Dr Robertson said he believed that could be possible within a couple of months.