It causes inflammation of the stomach , intestines or both , often leading to stomach pain , nausea , vomiting and diarrhea . The Royal Caribbean 's Grandeur of the Seas was sick during back - to - back cruises ending Saturday . That wo n't stop it from setting off again for a third time . Norovirus is a common cause of diarrhea and vomiting among cruise ship passengers . It causes as many as 100 U.S. deaths per year , CDC says .
The Royal Caribbean 's Grandeur of the Seas was sick during back - to - back cruises ending Saturday . That wo n't stop it from setting off again for a third time . Norovirus is a common cause of diarrhea and vomiting among cruise ship passengers . It causes as many as 100 U.S. deaths per year , CDC says .