乌斯怀亚汉坦病毒爆发调查：阿根廷世界尽头旅游热点面临公卫危机

世界尽头旅游热点否认引发汉坦病毒爆发

Tourist hotspot at 'end of the world' denies causing hantavirus outbreak

The BBC visits the city of Ushuaia, where heath officials have been sent to investigate the origins of the outbreak.