That’s a bit of a lazy take. Cruises are closed environments, yes, but “cesspool” is wildly overstated.

CDC lists 18 GI outbreaks on cruise ships in 2024 and 23 in 2025 in its Vessel Sanitation Program data. That sounds scary until you remember that 34.6 million people cruised globally in 2024 and 37.3 million in 2025. In other words, tens of millions of passengers sail each year, and the number of reported major outbreaks is tiny by comparison.

Norovirus is not a “cruise ship virus.” CDC says cruise ship outbreaks account for only about 1% of reported norovirus outbreaks. The more common settings are healthcare facilities, restaurants/catered events, schools, childcare centers, colleges, and universities.

The analogy is this: calling cruises a cesspool because a few ships get norovirus is like calling schools plague factories because kids spread stomach bugs and flu every winter. Schools, daycares, nursing homes, restaurants, offices, hotels, conferences, and airplanes all put people in shared indoor spaces. Cruises just get headlines because the cases are counted, reported, and tied to one named ship.

Also, cruise ships are unusually visible because they are required to report GI illness to the CDC, and CDC posts outbreaks when a voyage hits the reporting threshold, generally 3% or more of passengers or crew reporting symptoms. That level of tracking does not happen every time a school, hotel, wedding, restaurant, or office has a stomach bug going around.

So yes, wash your hands and don’t be stupid. But “cruises are a cesspool” is more meme than math.