A 40-year-old woman who recently returned from Iran is the fourth South Australian to have contracted the virus, with her baby now undergoing testing.
SA Health says the woman arrived on March 1 from Kuala Lumpur and is asking anyone on the same flight to contact authorities.
Authorities are also in the process of contacting anyone she had close interactions with after she disembarked.
She will be treated in an Adelaide hospital as her child awaits test results.
“It’s obviously quite important for us to also have that baby tested,” chief public health officer Nicola Spurrier said.
Another three people in the state have tested positive to the virus since the outbreak, but all have now been cleared and discharged from hospital.
Two others are awaiting results after undergoing testing.
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Meanwhile, a 26-year-old Logan man recently returned from Iran is the 11th person in Queensland to have contracted the coronavirus.
He is in isolation in the Princess Alexandra Hospital in Brisbane in a stable condition.
The patient is Queensland’s second confirmed case in two days after a 20-year-old Chinese student was diagnosed on Monday.
The University of Queensland student arrived in Australia on February 23 after spending 14 days in Dubai to bypass Australia’s China travel ban.
He fell ill two days later, but waited five more days before seeking medical help.
He remains isolated in a Brisbane hospital while his housemate undergoes testing.
A 63-year-old woman with the virus is also still isolation, in the Gold Coast University Hospital.
The other eight patients have recovered, and have been cleared and discharged from hospital.
In Sydney a woman who was displaying respiratory illness symptoms in a nursing home, where a worker has been infected by the coronavirus, has died.
The 95-year-old woman was under the care of the 50-year-old female carer, but it is unclear whether she had the virus at this stage.
The carer has been confirm as one of the of the seven new NSW victims in the past 24 hours.
She worked at the Dorothy Henderson Lodge in Macquarie Park, in Sydney’s north west, with 13 residents. Eleven of them have been isolated.