South Australia has recorded 3,894 new COVID-19 cases and four deaths of people with the disease.
SA Health said two women and two men, all in their 80s, who tested positive for COVID have died.
That brings the total number of deaths since the start of the pandemic to 370.
Today's case numbers were an increase of 303 compared to yesterday, but coincided with a 9.8 per cent rise in testing rates.
There are now 218 people with COVID in hospital, down slightly from yesterday, and 11 in intensive care.
South Australia now has 22,539 active cases, the lowest since March 18.
