South Australia has recorded its sixth consecutive day with zero new coronavirus cases, a milestone applauded by health authorities.

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

Watch the video above

There are only 14 people now in South Australia with COVID-19, with 96 per cent of the state’s cases now recovered.

Health authorities say there are seven cases of community transmission.

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

More on 7NEWS.com.au

More than 50,000 COVID-19 tests have been conducted by SA Health since the outbreak began.

Health authorities also revealed that a cluster of cases in the Barossa Valley, which prompted a near-total shutdown of the region, has now been contained.