A woman in Mount Gambier tested positive for COVID-19 after visiting Casterton and has since been taken to the Royal Adelaide Hospital with respiratory problems.

There have been unconfirmed reports however that the woman travelled directly from Melbourne to Mount Gambier.

The Wimmera Mail-Times has contacted the Casterton Memorial Hospital to confirm whether or not the woman was from Melbourne.

Under the new SA Health declaration, the border travel corridor will be reduced to 40km west and 30km east of the border, from its previous boundaries of 70km on either side.

Towns such as Nhill and Casterton will be excluded from the corridor under the new boundaries.

All other restrictions or requirements relating to arrivals from other jurisdictions will remain unchanged.

Nhill resident Bree Lowe has a 15-year-old daughter who attends boarding school at Sacred Heart in Adelaide.

She said this year had been difficult for trying to arrange her daughter's travel between the school and Victoria.

In August, Ms Lowe's daughter was granted a boarding school student travel exemption, however as the travel exemption does not apply to Ms Lowe herself she has had to arrange for alternative means to get her to Adelaide.

"I normally run her over to Bordertown to catch the bus, because there is no VLine travelling to South Australia," she said.

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Under the new health direction, Nhill, which sits on the edge of the 70km border corridor, will be excluded from the border travel corridor.

"We drop her off a Bordertown and away she goes. But now I don't know what to do because I can't get to Bordertown," she said.

"I am going to have to try and find someone who can pick her up, maybe at Kaniva, and take her to the bus."

A lack of clear communication from state health authorities has also made Ms Lowe's situation more difficult.

"You ring one place and they will tell you something, you ring another and they will tell you something different," she said.

"It is just conflicting information all of the time, you don't get a set answer. I haven't even tried, because I am just going to find someone who might be willing to drop her to Bordertown.

"Unless I apply for an exemption myself, but it will take too long before the end of school holidays."

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