( CNN ) Gastrointestinal illness has gripped 100 people on the cruise ship Celebrity Infinity , according to a report from the Centers for Disease Control . Of the ship 's 2,117 passengers , 95 have suffered from vomiting , diarrhea and other symptoms , the CDC said . The illness has also affected five members of the 964-person crew . The CDC has yet to determine what 's causing the ailments . Two staffers from the agency are scheduled to meet the West Coast-based ship in San Diego on Monday . The Infinity left San Diego on March 29 . It made its last stop in Puerto Vallarta , Mexico , on April 10 , according to MarineTraffic.com . Celebrity Cruises has been taking action since the outbreak began , including increasing cleaning and disinfection procedures , keeping passengers informed and taking specimens from the afflicted for testing by the CDC , the agency says . According to the Maritime Executive , this is the third time the Celebrity Infinity has suffered an outbreak of gastrointestinal illness , with others occurring in 2006 and 2013 . The ship was built in 2001 and refurbished in 2011 .
100 passengers and crew members have been sickened on CDC . The ship , which is based on the West Coast , left San Diego in late March . The Celebrity Infinity is scheduled to board the ship Monday .