South Australia has recorded its fifth consecutive day with zero new coronavirus cases, a milestone not seen since the outbreak began.

The state’s total number of cases remains at 438.

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“Well done South Australians,” chief public health officer Professor Nicola Spurrier said on Monday.

A total of 95 per cent of people have recovered from COVID-19 with just 20 active cases remaining.

Seven cases of suspected community transmission remain.

SA Heath has conducted nearly 15,000 tests in the past two weeks. Credit: AAP

A 68-year-old man and 75-year-old man remain in a critical condition at the Royal Adelaide Hospital.

More than 14,289 tests have been conducted in the past two weeks during a testing blitz.

South Australia remains the top-performing state on the number of tests done per capita.

Restrictions stay

Despite the positive result, health officials say South Australia is unlikely to ease restrictions anytime soon in the footsteps of eastern states.

“It’s worth bearing in mind that South Australia didn’t regulate to the same degree as many other states,” Spurrier said.

“We just have to do it in a very sensible, measured way.”

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In South Australia, travel is not limited to only essential purposes and gatherings of up to 10 people are still allowed.

Spurrier says when adjustments are implemented they will be done incrementally, to monitor which measures are most effective in keeping coronavirus cases low.