England head coach Chris Silverwood has tested positive for Covid-19 while isolating with family in Melbourne.
Silverwood was due to miss the fourth Ashes Test in Sydney after entering quarantine as one of his family was caught up in the initial coronavirus outbreak.
The head coach has been replaced by Assistant coach Graham Thorpe.
"England men's head coach Chris Silverwood has tested positive for Covid-19," a statement from the England and Wales Cricket Board read.
"Silverwood has been isolating in Melbourne since December 30 following a positive test from one of his family members. He will remain in isolation until January 8. Silverwood is asymptomatic and is fully vaccinated," the statement added.
Silverwood is expected to return to the England team ahead of the fifth Ashes Test.
The Aussies have already retained the Ashes after securing a 3-0 lead in the five-match Test series. The fourth Test will begin on January 5.
