Three cases linked to nebuliser, authorities believe
Victoria's Chief Health Officer Brett Sutton believes the three cases are linked to a nebuliser, used by a guest at the Holiday Inn who was taken to intensive care on Tuesday.
"It vaporises medication or liquid into a very fine mist," he told reporters on Wednesday.
"If that's breathed in, especially when it's used as medication, and someone is infectious ... then that picks up the virus, and that mist can then be suspended in the air with very very fine aerosolised particles.
"We need to be acutely aware of the possibility of everyone who was on that floor, in particular, being exposed to that."
Professor Sutton said it was possible everyone on that floor of the hotel has been exposed to the virus.
"The risk with an aerosolised virus is very substantial and so I think we should expect more cases," he said.
