Hundreds of passengers and crew were reported among the sick in at least five separate outbreaks of gastrointestinal illness in December, according to reporting from The Washington Post.
Just last month alone, 781 passengers and 109 crew reported symptoms of the highly contagious norovirus. Such symptoms include diarrhea and vomiting. In 2024, the cruise ship industry reported at least 16 stomach illness outbreaks on ships. This is the highest number of outbreaks since 2012, according to numbers reported by the Centers for Disease Control and Prevention.
While the main cause of these outbreaks has been norovirus, other causes that have been identified include E. coli and salmonella.