Yes and that was what I posted originally. That the flight wasn’t the issue. Child had it pre flight. And then gave it to parents in Australia.I dont think anyone caught it on the plane as i have stated previously, although if anyone did catch it on the plane an unvaccinated maskless child would be morre likely than a fully vaccinated adult.
I do however believe the child infected the vaccinated parents and not the other way around, kids are usually the ones to bring any colds or flu home, daycare and schools are rife with respiratory virus'.