A mysterious outbreak of stomach ailments has again struck the cruise industry, the latest in a round of low level yet high profiles sickness attacks to hit the beleaguered cruise industry. The latest outbreak reportedly happened onboard Carnival's Conquest, which arrived Sunday to New Orleans after a west Caribbean cruise on which about 260 passengers and crew members got sick. It had carried 3,160 passengers. It was disinfected and set sail again Sunday evening with only four cancellations and 38 people who just didn't show up.