Airlines want international travellers to take a quick US$10 Covid-19 test at the airport, removing the need for the quarantine measures they say are killing the industry.The International Air Transport Association has thrown its weight behind a 15-minute test it hoped would be ready “in the coming weeks”, citing health care firms Roche, and Abbott, who have developed rival kits.Calling for systematic testing at departure airports, Alexandre de Juniac, the association’s director general, said…