"We're talking now about 12,226 cases in New South Wales recorded in the last 24 hours, and some modelling showing within weeks they could be at 100,000 cases a day.
"So, given the number of cases that are now across the league, it wasn't a case of if, it was probably a case of when. Thankfully the protocols we have in place have managed to, so far, isolate it to three cases out of a group of 30-odd people.
"We try to mitigate the risk, but the risk is always there."
The cases are not expected to impact their upcoming fixture against Adelaide United on Saturday night, as the remainder of the team still plans to travel to South Australia today.
"As it stands right now the game is on and we're preparing for that as normal," Gill said.
The Phoenix men's team have not played since their 2-1 defeat to Sydney FC on December 19, with their last two games - against Melbourne City and the Central Coast Mariners - being postponed after members of the opposition tested positive for Covid-19. Their scheduled fixture against the Brisbane Roar on January 5 has also been postponed.
Their match against Adelaide is one of just two games going ahead this weekend, with the other four scheduled games for the round all postponed due to Covid-19.
