South Australia's Chief Public Health Officer, Nicola Spurrier, has tested positive to COVID-19.
The top public health doctor, who had her fourth jab last week, met with the state's COVID-19 leaders this morning as daily new cases reached 4,172.
Professor Spurrier is experiencing "extremely mild symptoms", SA Health says.
She will continue to work from home during her seven-day isolation period.
The Emergency Management Council subcommittee met for an hour and was attended by Deputy Premier Susan Close, Police Commissioner Grant Stevens and Health Minister Chris Picton.
Professor Spurrier left after the meeting ended and did not attend a press conference announcing new modelling that is predicting more than 400 South Australian adults would be in hospital in a week's time because of the virus.
Mr Picton said non-urgent elective surgeries in public hospitals may be deferred or move to private hospitals in anticipation of daily cases peaking around 7,000 next week.
The government is also encouraging students to wear masks when school returns next week but would not make it mandatory.
