Matthew Wade has tested positive for coronavirus but is expected to play in Australia's huge T20 World Cup showdown with England on Friday.
The wicketkeeper-batter returned a positive test on Wednesday evening, but only has minor symptoms.
Wade is set to feature at the MCG, provided his symptoms remain only minor, while spinner Adam Zampa is poised to play his first match of the tournament after he was sidelined by COVID-19.
Australia do not have a recognised back-up keeper in their squad after Josh Inglis suffered a hand injury prior to the tournament and was replaced by all-rounder Cameron Green.
Glenn Maxwell took the gloves in training on Thursday, but it would seem he will not be required to step in behind the stumps in a crucial Group 1 showdown.
The hosts are fifth in Group 1, two places behind England after they suffered a stunning five-run loss to Ireland by the Duckworth-Lewis-Stern method in a rainy Melbourne on Wednesday.