Andrew McDonald will miss the start of his first tour as Australia's full-time cricket coach after testing positive for COVID-19.
McDonald, who was interim coach after Justin Langer's departure in February, needs to isolate for seven days while Australia depart for Sri Lanka on Thursday.
Assistant coach Michael Di Venuto will step up into the top job for Tuesday's opening Twenty20 in Colombo.
After leading Australia to a gritty 1-0 Test series win in Pakistan, McDonald was in April named coach of the men's team for the next next four years.
Australia will play three T20s and five ODIs before a two-Test series against Sri Lanka in Galle, starting on June 29.
