More than 90 people on a Royal Caribbean cruise ship returning to Tampa are sick after a gastrointestinal illness outbreak.

(CNN) – A gastrointestinal illness broke out on a Royal Caribbean ship this past week. According to the U.S. Centers for Disease Control and Prevention, nearly 100 passengers onboard the Radiance of the Seas have been affected by the outbreak. Only two crew members have reported symptoms.

More than 90 people have been reported ill on board a Royal Caribbean ship sailing out of Tampa, according to the Centers for Disease Control. An outbreak of an unknown illness with primary symptoms of diarrhea,