UPDATE: Ducati has announced that, following the news of Jack Miller's positive Covid test and resulting absense from its planned 2022 MotoGP team launch on January 28, the factory has decided to postpone the launch until February 7.

Miller, who is asymptomatic, is currently in self-isolation in Australia and will do a second PCR test next week. His inability to travel at the moment means that the official team photoshoot cannot take place in time for the January 28 'virtual' launch.

Meanwhile, the 2022 Ducati MotoGP livery will now be unveiled on January 31, on the first day of the Shakedown test at Sepang in Malaysia, where test rider Michele Pirro will be on track for the first time this year.

Jack Miller will be unable to attend next week's Ducati MotoGP launch after testing positive for Covid-19.

The double 2021 race winner is unable to leave his home in Australia, where he has been spending the winter, due to the diagnosis.

"G'day guys, unfortunately as you can tell I'm still here at home in Australia due to testing positive for 'Corona', so I'm currently unable to travel and will miss the team presentation," Miller said in a video message on Twitter.

"I just want to let you all know that I'm doing fine. No symptoms. Still able to continue training and what not here on the farm. Just unable to travel at this point in time."

Team-mate and title runner-up Francesco Bagnaia will thus be the only Ducati Lenovo rider present at the virtual launch, on January 28.

Miller's next MotoGP appointment, once he tests negative and is able to travel again, will be the Official Sepang test from February 5-6.

Since he is no longer attending the team launch in Italy, Miller is now likely to fly directly to Malaysia from Australia.