The 2025 cruise ship season is off to a rocky start, plagued by a surge in norovirus outbreaks. Two significant outbreaks this February alone have affected hundreds of passengers and crew, raising concerns about the safety of cruise travel. These incidents mark the sixth and seventh gastrointestinal illness outbreaks on U.S.-visiting cruise ships since January, a concerning increase compared to previous years.
The Centers for Disease Control and Prevention (CDC) Vessel Sanitation Program reported that at least 104 passengers and 12 crew members aboard Holland America’s Rotterdam fell ill during a two-week cruise departing Fort Lauderdale, Florida on February 2nd. Norovirus is the suspected culprit. A separate outbreak aboard Royal Caribbean’s Radiance of the Seas affected at least 160 passengers and eight crew members before the ship docked on February 8th. While the cause of this outbreak remains officially undetermined, norovirus is highly suspected.
Cruise ships are unfortunately susceptible to foodborne illnesses due to close living quarters and shared dining facilities. However, 2025 is proving to be an exceptionally challenging year. Seven outbreaks have been reported to the CDC so far, two in February alone. This is a significant increase compared to the same period in 2024 (two outbreaks) and 2023 (three outbreaks). The total number of outbreaks in 2024 was 18, and 14 in 2023.
Norovirus, often dubbed the “cruise ship virus,” is highly contagious and spreads rapidly through contaminated food, water, or surfaces. Close contact with infected individuals can also transmit the virus. Although less than 1% of U.S. norovirus cases are linked to cruise ships, according to the CDC, the confined environment of a ship makes outbreaks more noticeable. Furthermore, norovirus cases have been rising nationwide since last summer, contributing to the increased prevalence on cruises.
While the Cruise Lines International Association claims the risk of contracting norovirus on a cruise is “quite rare,” the recent surge in outbreaks raises valid concerns.
For those still planning a cruise, the CDC recommends frequent handwashing, avoiding areas where individuals appear visibly ill, and reporting any suspected cases to ship staff. These precautions can help mitigate the risk of infection and ensure a healthier cruise experience.
