CDC Links Royal Caribbean Ship Hot Tubs to Legionnaires’ Disease Outbreaks: What You Need to Know

In recent years, awareness around health risks associated with cruise travel has grown, particularly regarding the spread of contagious illnesses in enclosed environments. A lesser-known danger, however, involves the hot tubs found on private balconies of modern cruise ships, which can potentially harbor Legionella bacteria.

The CDC (Centers for Disease Control and Prevention) has been educating cruise operators about how Legionella can thrive in hot tub systems and be transmitted through inhaled contaminated water droplets, leading to Legionnaires’ disease, a serious type of pneumonia. Although cases among cruise passengers are relatively rare, the rise of private hot tubs—which often receive less frequent cleaning and maintenance compared to public hot tubs—raises concerns about bacterial growth.

Recently, Royal Caribbean International (RCI) alerted passengers of the Symphony of the Seas to potential health risks after multiple guests were diagnosed with Legionnaires’ disease following their voyages. The CDC confirmed that one guest aboard the ship was infected, though the location of exposure was not pinpointed. Earlier in the year, similar warnings were issued regarding two additional passengers who had fallen ill on the same vessel.

The issue isn’t exclusive to Symphony of the Seas. In October 2024, the CDC reported a dozen instances of Legionnaires’ disease linked to two different cruise ships, with investigations determining that private-balcony hot tubs were a common factor in these outbreaks. Public hot tubs are generally maintained under stricter cleaning protocols, thus reducing the risk of contamination compared to less frequently serviced private tubs.

In response, the CDC continues collaborating with RCI to identify design and operational features that increase the risk of Legionella growth and to enhance maintenance practices. RCI has stated it is reinforcing sanitation measures on its ships and follows all CDC recommendations. The company stresses its commitment to the well-being of passengers and crew, highlighting that while Legionella exposure does not typically cause illness in most people, certain vulnerable groups, such as older adults and individuals with specific health conditions, are at greater risk.

Travelers are urged to watch for symptoms like coughing, fever, muscle aches, and shortness of breath. Those experiencing any of these symptoms should consult a healthcare provider for guidance.

For more information on this topic, read about the link between hot tubs and Legionnaires’ outbreaks and the health measures taken by Royal Caribbean.

Set sail on a voyage of discovery with CruiseShip.net – your ultimate destination for all things cruising! Explore the latest news, insightful reviews, and thrilling cruising adventures from around the globe. Whether you’re a seasoned cruiser or a first-time traveler, CruiseShip.net is your go-to source for expert advice, insider tips, and inspiring stories to fuel your wanderlust. Embark on a journey like no other with CruiseShip.net – where every wave brings new excitement and endless possibilities on the high seas.