WHAT WE KNOW SO FAR ABOUT THE VANUATU BUS CRASH:
* 12 Australians injured, 10 seriously
* They range in age from children to the elderly
* Victims have head injuries, broken bones and open wounds
* Medical experts say it's touch and go for some
* All were on a P&O cruise and had boarded a tour bus when it collided head on with a local commuter bus in Port Vila
* Three locals died
* Three of the worst-injured Aussies have been flown to Noumea for specialist care
* CareFlight expects to return two seriously injured victims to Brisbane on Tuesday afternoon
* The Royal Brisbane and Women's Hospital is readying teams to treat victims
* NSW couple Moyna Exley and Brian Exley, aged in their 70s, are among the wounded. They have broken bones and open wounds.
* P&O cruise ship Pacific Dawn to stay in Vanuatu until medical evacuations are complete
* Vanuatu's government has promised a full investigation
