The CEO of Australian airline Qantas Airways Ltd. has proposed that once a coronavirus vaccine becomes widely available, passengers on international flights be required to show proof they are vaccinated prior to travel.Speaking to Australia's Nine Network on Monday, Alan Joyce said an electronic "vaccination passport" would be a "necessity" for travelers coming into, or leaving, Australia."We are looking at changing our terms and conditions to say for international travelers, we will ask people to have a vaccination before they can get on the aircraft," Joyce said.The CEO said it is unclear…READ FULL ARTICLE