Expert Explains Why Cruise Ships Are So Prone to Disease Outbreaks

Cruise ships can become outbreak hotspots because crowded cabins, shared dining, and common surfaces help infections spread fast.

The Diamond Princess COVID-19 outbreak showed how ship design and operations can amplify transmission on board.

Norovirus remains a recurring problem, with outbreaks often tied to buffets, close contact, and rapid person-to-person spread.

Legionnaires' disease has also been linked to ship water systems, highlighting risks beyond respiratory infections.

Experts say better ventilation, sanitation, quarantine, and water-system controls can reduce risk, especially for older adults and people with health conditions.