Cruise & Cruise Line

CDC Investigates Cruise Ship Illness Outbreak

Image: Lounge chairs lined up on the deck of a cruise ship. (Photo Credit: Adobe)
Image: Lounge chairs lined up on the deck of a cruise ship. (Photo Credit: Adobe)
Laurie Baratti
by Laurie Baratti
Last updated: 5:15 PM ET, Fri February 6, 2026

The U.S. Centers for Disease Control and Prevention (CDC) has begun an investigation into an outbreak of gastrointestinal illness that affected more than two dozen people aboard Regent Seven Seas Cruises’ Seven Seas Mariner last month. 

The agency says 27 people — including 21 passengers and six crew members — reported gastrointestinal symptoms during a cruise from Miami to Honolulu that ran from January 11 to February 1. There were 631 passengers on board at the time of the outbreak, Fox News reported. 

According to CruiseMapper, the sailing included several port stops in Central America and Mexico, including visits to Costa Rica, Guatemala, Colombia and a transit through the Panama Canal en route to Hawaii.

According to the CDC, the cruise line alerted the agency of the first cases on January 29, while the ship was still sailing. The exact cause of the illness has not yet been identified, and the CDC currently lists it as unknown. Passengers who reported symptoms were asked to provide stool samples so officials can test for a possible cause. Lab results are still pending.

While stomach illnesses on cruise ships are often linked to norovirus, the CDC notes it can take time to confirm the cause of an outbreak.

In response to the outbreak, the cruise line took several actions to help contain the spread of illness, including isolating those who displayed symptoms and intensifying cleaning and disinfection efforts throughout the ship. The CDC said the ship followed its required sanitation and outbreak-response protocols.

According to CBS News, this is the first cruise ship illness outbreak reported by the CDC in 2026. The agency continues to remind travelers that frequent handwashing is one of the best ways to reduce the risk of getting sick while traveling.


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Laurie Baratti

Laurie Baratti

Assistant Editor

Laurie Baratti is an Assistant Editor for TravelPulse. She is a San Diego-based journalist whose work has previously appeared in publications like TravelAge West, SPACE, Modern Home + Living, Montage, and Sandals Life magazines. Travel writing has long been her passion, and she is always looking for excuses to explore the world outside of her native California. Laurie is also a lifelong equestrian, a proud pet-parent, and an underground advocate of the Oxford comma.

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