Norovirus outbreaks on cruise ships are spiking in 2025, with 16 reported incidents so far, nearly as many as all of last year.

A “newly dominant strain” of norovirus has increased outbreaks of the stomach bug onboard cruise ships, says a US public ...

Princess Cruises delayed boarding of the September ... Less than five months into the year, a steady string of norovirus cases has sickened guests and crew members on cruise ships.