Australia's progress against coronavirus is in stark contrast with large swathes of the globe as six new cases have been recorded across the nation.
South Australia confirmed four cases in overseas travellers who all in quarantine, while Western Australia confirmed one in a child traveller.
New South Wales recorded one locally acquired case - a teenager who attended an indoor trampoline park at the same time as a known case.
The teen is also a student at Cabramatta High School, which is closed for deep cleaning over the weekend.
Victoria recorded a single but potentially "false positive" case and Chief Health Officer Brett Sutton later announced an expert panel confirmed it was a negative case.
"So that's a donut day," he tweeted.
It is the third zero-case day in Victoria in a week.
The encouraging figures are a huge contrast with the situation overseas.
The United States has reached a grim milestone, with more than 100,000 cases reported in a single day, while on Friday the United Kingdom reported 24,405 new cases.
France on Friday reported 49,215 new confirmed cases and Russia recorded 18,283.
Progress at home has resulted in WA's long-awaited border reopening, which paves the way for mostly free travel between states by mid-November.
WA's hard border restrictions will be removed from November 14, with interstate travellers no longer required to hold exemptions.
For the past six months, the only people allowed into WA have been required workers and those granted limited exemptions on compassionate grounds.
Under the new regime, anyone will be let in so long as they complete a G2G application and adhere to health requirements.
People who have been in NSW and Victoria in the preceding 14 days will be required to enter self-quarantine at a suitable premises and undertake COVID tests.
Arrivals from all other states and territories - deemed "very low risk" jurisdictions - will not be required to quarantine but must undergo health screening, a temperature check and prove they haven't recently been in NSW or Victoria.
"The time is right, the conditions are right, and I'm very confident our control border arrangements strike the right balance," WA Premier Mark McGowan said on Friday.
His health minister Roger Cook on Saturday defended the cautious reopening saying despite "a lot of tension" about his state's border rules the government would not hesitate to revert to a hard border if the health advice changes.
WA's requirement for arrivals from NSW and Victoria to quarantine will be removed once those states go 28 days with no community spread, as all other jurisdictions have achieved.
And as Queenslanders await election results on Saturday, that state's travel restrictions will ease from 1am on Tuesday, with the border open to everyone but those in Greater Sydney and Victoria.
But NSW Premier Gladys Berejiklian said that isn't good enough and there is no reason Sydneysiders shouldn't be able to travel to Queensland now.
She said the lengths Queensland and WA have gone to is hurting families, individuals and businesses.
"It's extremely unfair and lacks logic and common sense to continue to lump NSW with Victoria - our states have taken very different paths," she said.
Prime Minister Scott Morrison has urged states not to remain "stuck in neutral" as case numbers are driven down.
Australian Associated Press