Marshall has been isolating at home in Adelaide since finding out about his adult daughter’s positive result on Saturday. The Premier dined with her on Thursday.

“I had my PCR test, it’s come back negative,” Marshall said in a video address from home on Sunday.

“But I will continue to work from home from the seven days from my contact.”

Marshall’s isolation period comes after police commissioner and state emergency coordinator Grant Stevens tested positive to COVID-19 last week along with opposition leader Peter Malinauskas.

South Australia recorded 4506 new cases and one death on Sunday, on top of 4274 new cases on Saturday and 3707 on Friday.

176 people in SA are currently in hospital with the virus, with 18 in intensive care and two on ventilators.