French authorities on Wednesday allowed asymptomatic passengers to leave a British cruise ship, saying a gastrointestinal virus was behind an outbreak of sickness that came after an elderly man died of a heart attack. Earlier, authorities had ordered a lockdown for the more than 1,700 passengers and crew on the vessel, but insisted there was no connection with the hantavirus outbreak suspected of killing three people on the Dutch-flagged MV Hondius cruise ship, which has sparked international...