Seventeen Americans from the MV Hondius have returned to the US for quarantine following a fatal hantavirus outbreak during their Antarctic voyage.One passenger has tested positive for the Andes strain while undergoing a mandatory forty-two-day observation period at facilities in Nebraska and Georgia.Health officials from the CDC are managing the monitoring process as the cruise ship has departed Tenerife for the Netherlands.Experts emphasize that the risk of a pandemic remains very low because this specific virus requires prolonged close contact to spread among humans.