The deadly rat-borne virus that has killed three people on a cruise ship may have been brought onto the vessel by a birdwatching couple, according to officials.
Investigators said a Dutch couple, who later boarded the MV Hondius, visited a landfill site to snap birds in the city of Ushuaia, and may have been exposed to rodents carrying the lethal infection.
It comes as more than 20 Britons on board the doomed cruise ship will be repatriated as soon as possible – and face being quarantined for up to eight weeks.