The Centers for Disease Control and Prevention reported Wednesday that over 100 people have fallen ill from an unknown disease on a Royal Caribbean cruise.

Over 140 passengers and crew members aboard a Royal Caribbean International cruise ship were sickened by a gastrointestinal illness that led to vomiting and diarrhea, according to the Centers for Disease Control and Prevention.

A dream vacation quickly turned into a nightmare for more than 140 people aboard Royal Caribbean’s Navigator of the Seas when a mysterious illness swept through the ship during a week-long cruise.The gastrointestinal outbreak,