(CNN) - A vacation turned into a nightmare on a Royal Caribbean cruise ship after 300 people got sick since the ship set sail from New Jersey Tuesday.
The Centers for Disease Control said in a statement on its website several passengers and crews members on the Explorer of the Seas are suffering from vomiting and diarrhea.
The cause of the illness is unknown.
The situation has made some passengers on the ship unhappy.
"We'll never come back again. Not on this cruise line. We're were here with them two years ago the same thing. The ship was overrun with this sickness," a passenger said. "You know any sicknesses get involved, but it's the most disorganized trip I've ever been on in my life. I'm almost 80 years old. It's sad."
Health officials are expected to board the ship Sunday while it's docked off the Virgin Islands.
They're expected to conduct an investigation and evaluate the response to illnesses.
A spokeswoman for Royal Caribbean says the ship skipped a planned stop Saturday in Haiti and headed straight to Puerto Rico for an extensive cleaning.
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