South Australia has recorded its third consecutive day of zero new coronavirus cases despite an “unprecedented” number of tests.

Despite more than 3,000 tests being conducted between Thursday and Saturday, no positive results were detected.

Chief public health officer Professor Nicola Spurrier says the result is “incredibly pleasing” but warns South Australians not to take their foot off the brakes yet.

South Australian chief public health officer Professor Nicola Spurrier. Credit: DAVID MARIUZ / AAPIMAGE

Two people remain in intensive care at the Royal Adelaide Hospital.

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“Whilst we’re feeling very happy today that we have no more new cases, our thoughts are with the two gentlemen in intensive care,” Spurrier said.

The state’s total number of coronavirus cases remains at 435.