Australia's players are on COVID alert as the defending T20 World Cup champions prepare for a 'backs against the wall' clash with arch rivals England at the MCG on Friday.
Spinner Adam Zampa missed Tuesday night's seven-wicket win over Sri Lanka after testing positive to COVID-19 following his arrival in Perth.
It's the second time Zampa has caught the virus, and he has been separated from the rest of the team in a bid to avoid an outbreak.
Allrounder Marcus Stoinis, who struck a match-winning 59no off 18 balls against Sri Lanka, said precautions were being taken among the player group.
"Everyone around the world is going through that, and every team is gong to have their processes in place to try to keep it as safe as possible," Stoinis said.
"We first got COVID back in the Big Bash (last summer), and a few of us had it at the same time.
"(Zampa) said it wasn't as bad as that time. So hopefully he's ok, and in a couple of days we'll see (if he can play).
"All the boys are testing and doing what we can to make sure we're alright."
Zampa is a chance to face England, and Australia will also be monitoring the health of Glenn Maxwell after the master blaster copped a sickening blow to the throat.
Maxwell fell to his hands and knees after being struck by a 141km/h delivery from Sri Lanka paceman Lahiru Kumara.
Two balls earlier, Maxwell copped a painful hit to his right hand from the same bowler.
Maxwell was able to bat on after copping the twin blows, but he appeared rattled and was dismissed soon after for 23 off 12 balls.
"He's in the change room now icing up," Stoinis said.
"He said it (his throat) is pretty sore, but I think it's all good. I think it's just going to bruise up."
Australia's 89-run loss to NZ in their tournament opener saw their net run rate plummet to -4.450, but the late blitzkrieg from Stoinis against Sri Lanka has now improved it to -1.555.
The defending champions still have work to do to get their net run rate into positive territory.
A loss to England would effectively end Australia's hopes of securing a semi-final berth, and Stoinis knows it's all on the line.
"The backs are still against the wall," he said.
"It's going to be a really important game for us."
Stoinis was the hero of the night against Sri Lanka, striking the fastest ever T20I half-century by an Australian.
The powerful right-hander needed just 17 balls to reach the mark - bettering David Warner's previous Australian record of 18 deliveries.
