Over 140 people have been affected by a gastrointestinal outbreak on a Royal Caribbean International cruise, according to the Centers for Disease Control and Prevention. The round-trip from Los Angeles to Mexico began on July 4.

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.

Royal Caribbean's Navigator of the Seas was on a week-long, round-trip cruise when passengers became sick, the CDC said.