Celebrated Australian composer Brett Dean has been diagnosed with coronavirus.

The 58-year-old was due to conduct an Adelaide Festival performance over the weekend. He recently travelled to Australia from Taiwan and arrived in Adelaide on Tuesday via a flight from Brisbane. He tested positive to COVID-19 on Thursday.

Australian composer Brett Dean at the Sydney Opera House. Credit:Domino Postiglione

Three people have been asked to voluntarily quarantine themselves in the wake of the diagnosis. None of those who have been asked to self-isolate are displaying symptoms of COVID-19, according to Adelaide Festival. The festival's executive director, Rob Brookman, said he is working closely with authorities to limit the virus.

“The health and safety of the public, our artists and our staff [is] of paramount importance to the Adelaide Festival and we are following the advice provided to us by SA Health and instituting appropriate measures meticulously,” he said. “We are obviously very concerned for the health of Brett who is receiving the best of care and we hope that he has a swift and full recovery.”