EXPLAINER:
The last flight from Sydney left for Brisbane at 9.45pm last night. While the final flight departed for Melbourne at 9pm.
WA authorities yesterday announced its hard border with NSW was already in effect and had been for 18 minutes about 11.15am local time.
Premier Mark McGowan admitted the strict border measures would cause inconvenience, but stood firm that it was necessary.
The state s 14-day isolation measures will also apply to all travellers who have been in NSW since 12.01am June 11.
The last-minute change was a hard pill to swallow for arrivals yesterday, many of whom were devastated. We came out and we had the police stopping us and just informing you either had to fly straight home or quarantine for 14 days, one traveller told 9News.
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They visited Goulburn and Jervis Bay before they became symptomatic and got tested.
Does Victoria s Department of Health have a theory on this?
Victoria s Chief Health Officer Professor Brett Sutton said it s possible the family got infected while in NSW but he said it is more likely that Delta was transmitted between two Grade 5 students at school.
Is Delta more transmissible between young people?
It could be. The Delta variant was found in 140 outbreaks in schools and educational settings in the United Kingdom, according to UK government data.
So just how contagious is Delta?
The World Health Organisaton (WHO) has categorised it as a variant of concern, stating it had significantly increased transmissibility and that a growing number of countries (were) reporting outbreaks associated with this variant .
He said he expects restrictions to ease on Friday. My expectation is that by the end of this period we ll be in a position to have a further easing of restrictions, he said.
Lockdown restrictions are set to remain in place until Thursday night, with Deputy Chief Health Officer Professor Allen Cheng explaining the relaxing of measures would be a day-by-day proposition . We don t want to be in this any longer than we need to, he said. If we can, we will lift it early - but at this stage, our expectation is that it will continue to Thursday.
Following the announcement of the extended lockdown, Victoria s Chief Health Officer Professor Brett Sutton said he had great confidence the restrictions could ease as planned after the extra week.