The overall public risk remains low, the WHO said.

American passengers from the cruise ship at the center of the hantavirus outbreak, including at least one who tested positive, arrived in Nebraska early Monday for evaluation at a highly specialized quarantine unit.

Three passengers have died and several others have been sickened by hantavirus on board the MV Hondius cruise ship. Hantavirus usually spreads by inhaling contaminated rodent droppings.

The Caribbean Princess docked at Port Canaveral May 11 with more than 110 people sick from a norovirus outbreak.

The 1,233 holiday makers, and 514 Indian crew members are trapped on the Ambition Cruise Line vessel, docked in Bordeaux after almost 50 people onboard fell ill from gastrointestinal sickness, the ship operator confirmed.

Health officials in multiple states say they're monitoring some passengers who have returned to the U.S. after being aboard the ship for potential hantavirus infections.

Spanish authorities on Friday were preparing to receive more than 140 passengers and crew members on board a hantavirus-stricken cruise ship headed for the Canary Islands.

Health officials in multiple states say they're monitoring some passengers who have returned to the U.S. after being aboard the ship for potential hantavirus infections.