Chief Health Officer Dr Jeanette Young said she believes the Brisbanenurse acquired the infection at work, however, this is yet to be confirmed.
The number of global flight arrivals to the state will be halved to ease pressure on hospitals, which are also dealing with a surge in Covid-19 cases from neighbouring Papua New Guinea. On Monday, there were four new cases of community transmission noted in the state and six cases from overseas travel. "But we now have the genome sequence result back and she has exactly the same genome - no snip is different - to a gentleman who arrived and was treated in the PA Hospital and was tested on 22 March", Dr Young said.
The order by Queensland premier Annastacia Palaszczuk is the latest in a series of snap lockdowns imposed by Australian leaders at the first sign of community spread. Those travelling through Greater Brisbane (to and from areas not under lockdown) must use only private vehicles and are not allowed to stop while moving from one place to another.
The second cluster is linked to a nurse and has grown rapidly after she attended a weekend hen's party in Byron Bay in northern New South Wales. "Do we expect to see more cases?"
The state now has 78 active cases of the virus, up from five on February 20.
On the possibility of Greater Brisbane's lockdown continuing beyond Thursday, Ms Palaszczuk said it was a "day by day" proposition.
It is not clear at this stage how long the border restrictions will last, and whether they will extend beyond Brisbane's three-day lockdown period and into the Easter weekend.
Dr Young said she would mandate that anyone working with COVID-19 patients has to have had their first vaccine dose.
"They all attended a party together down in Byron Bay".
"So we've been quite targeted, reflecting the decisions that Queensland public health authorities have made and other states are doing the same thing".
A male entertainer at the party, who is also a tradie who lives on the Gold Coast, is one of five people from the hens celebration who have tested positive overnight.
"We do anticipate that we will probably see more cases today".
"In terms of the Greater Brisbane region, we just have to take this day-by-day", she said. I don't want to see that happen to Queensland, I don't want to see that happen to Australia'.
From that time, only South Australian residents, essential workers or people relocating will be able to enter SA from Queensland, and they will have to self-isolate for 14 days.
"We know there is a flight which is due into South Australia at 4.45pm and that is why we have pulled this press conference together as quickly as possible to give that advance notice to people who might be on that flight coming into South Australia".
"My understanding is that over the next couple of weeks there will be 100 per cent of people vaccinated, and around 7000 people have been getting their second vaccinations", she said.
On Thursday, March 11 the doctor, not knowing she had contracted the virus and was infectious, visited a cafe, gym, pub and McDonald's drive-through in suburbs near the hospital.
"So, the vaccination rollout is going ahead".
And in January, Brisbane was shut down over a single case of the United Kingdom variant which was found in a quarantine hotel worker.
Outdoor sports resume across east as lockdown eases
In Wales, the "stay local" order ended on Saturday and people were allowed to stay in self-contained holiday accommodation. Outdoor swimming pools, tennis, basketball courts and other outdoor sports facilities will be allowed to reopen.
Ever Given Ship In Suez Canal Is Re Floated With Egyptian Help
But Rabie on Saturday acknowledged that "technical or human errors" led to the Panama-registered super container ship's grounding. Some shippers rerouted their cargoes around the Cape of Good Hope, adding up to two weeks to journeys and extra fuel costs.
Suez Canal ship 'now moving,' owner says
Crews from Egypt and around the world have been working nonstop to try to refloat the ship, but previous efforts have failed. The pair have a combined pulling capacity of around 400 tons, said spokesman Martijn Schuttevaer.