Coronavirus cases reach zero in some Australian regions

People walk past a sign reading "exercise only" at Coogee Beach in Sydney on April 20, 2020. - Authorities in Sydney reopened three beaches for walking, running, swimming or surfing only amid lockdown restrictions put in place due to the COVID-19 coronavirus outbreak. (Photo by Saeed KHAN / AFP) (Photo by SAEED KHAN/AFP via Getty Images)
Coogee Beach in Sydney on Monday. (AP)

South Australia and the Northern Territory have reported no new coronavirus cases over the weekend, and Queensland has had none in 24 hours.

Australian health officials say lockdown measures are working, with just 80 new COVID-19 cases recorded across the country over the weekend.

South Australia remained at just 81 confirmed cases as of Sunday evening despite a dramatic rise in testing during the past two days, while the Northern Territory remained at just 28 cases.

Elsewhere, New South Wales recorded just six new cases overnight, a result the state’s premier Gladys Berejiklian said was “very positive”, and Victoria recorded only one new case.

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Victoria has also ramped up testing, with around 7,000 tests done over the weekend.

Queensland announced on Monday it had no new cases overnight, the first time it reported no new cases in more than two months.

A medic performs COVID-19 tests on a member of the public at a drive-through COVID-19 testing center on Bondi Beach in Sydney on April 11, 2020. - Authorities have closed Sydney's Bondi Beach and increased police patrol in an effort to deal with the coronavirus pandemic. (Photo by Saeed KHAN / AFP) (Photo by SAEED KHAN/AFP via Getty Images)
A medic performs COVID-19 tests on a member of the public at a drive-through testing centre on Bondi Beach in Sydney last week. (AP)

The Australian Capital Territory previously had six days with no new cases but health officials there confirmed on Monday it has one new diagnosed case, a man in his 40s who is said to have contracted the disease overseas.

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Western Australia marked one new case on Sunday, taking the state’s total to 545, while Tasmania recorded nine more cases over the weekend, bringing its total number of cases to 197.

SYDNEY, AUSTRALIA - APRIL 18: Sunrise at the Sydney Opera House as seen from a drone on April 18, 2020 in Sydney, Australia. Prime Minister Scott Morrison on Thursday flagged that current restrictions in place to stop the spread of COVID-19 could be lifted in four weeks, should Australia's infection rate continue to flatten. Currently, all non-essential business are closed and strict social distancing rules are in place, while public gatherings are limited to two people. New South Wales and Victoria have enacted additional lockdown measures to allow police the power to fine people who breach the two-person outdoor gathering limit or leave their homes without a reasonable excuse. Queensland, Western Australia, South Australia, Tasmania and the Northern Territory have all closed their borders to non-essential travellers and international arrivals into Australia are being sent to mandatory quarantine in hotels for 14 days. (Photo by James D. Morgan/Getty Images)
Sunrise at the Sydney Opera House in New South Wales. (Getty)

Health authorities have now called for more South Australians in the 21-30 age group to present themselves for testing so they can identify any asymptomatic carriers of the virus.

South Australia’s Mike Cusack said more than 5,000 COVID-19 tests had been completed over the past two days during a testing blitz across the state.

"With the restrictions, especially with the border restrictions, we really have managed to get control of it,” he said.

"But in the coming weeks, we will get a true sense of it."

South Australia’s chief public health officer Nicola Spurrier said she was “very pleased” with the outcome of the testing.

"This is in the context of many more tests being done in South Australia, so thank you to all those people who have developed a mild cold in the last three or four days and have come forward and had a test done.

"It is all very reassuring because if we were getting very low numbers but our testing rate was dropping then we would be concerned so please keep up the good work."

The results have not prompted ministers to ease lockdown restrictions yet, but they could relax them in the next few weeks.

South Australia’s health minister Stephen Wade said it was too soon to ease border controls but that other measures would be lifted in the next few weeks.

Speaking to ABC News on Sunday, Wade said: “The border control will not be the first wave of restrictions eased.

“We're going to be very cautious as we ease back on these restrictions.”

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