Legionnaires’ Disease Outbreak on Symphony of the Seas

Quick Outbreak Details:

Outbreak Dates (First to Most Recent Cases): 

March 2025 – April 2025

Confirmed Cases: 1

Deaths: 0

Exposure Source: Remains undetermined. 

In March and April of 2025, a passenger aboard Royal Caribbean’s Symphony of the Seas was diagnosed with Legionnaires’ disease, prompting the CDC to take swift action. This diagnosis raised alarms, as it sparked concerns among passengers who had recently sailed on the same ship.

Symphony of the Seas Legionnaires’ Disease Overview

In April 2025, Royal Caribbean sent letters to passengers who sailed on the Symphony of the Seas between March and April, warning them about the possible exposure to Legionnaires’ disease. While no outbreaks were confirmed onboard, one individual was later diagnosed with Legionnaires’ disease after their voyage. The CDC has not determined where the exposure occurred, but heightened sanitation measures were implemented on the ship as a precaution.

This follows a similar incident in January 2025, where passengers from previous sailings in October and December 2024 had contracted Legionnaires’ disease. Although these outbreaks were not linked directly to the ship, the cruise line took swift action to ensure the safety of its guests and prevent further risks.

How Legionnaires’ Disease Spreads

Legionnaires’ disease is caused by inhaling water droplets contaminated with Legionella bacteria, which can be present in water sources like pools, hot tubs, and whirlpools. Though it’s not easily spread from person to person, environments like cruise ships—where pools and spas are central features—can provide the right conditions for the bacteria to flourish if proper maintenance isn’t followed. While exposure to Legionella doesn’t guarantee illness, those in good health are generally less likely to show symptoms.

Symptoms of Legionnaires’ disease can include:

• Cough
• Shortness of breath
• Fever
• Muscle aches
• Headaches

Royal Caribbean’s Response and Precautionary Measures

In response to the Legionnaires’ disease case, Royal Caribbean has followed CDC guidelines, which include increasing sanitation protocols across its fleet. These actions included hyperchlorinating water sources and intensifying cleaning efforts in high-risk areas like private hot tubs and pools. Passengers on the affected sailings were notified immediately and given guidance on what steps to take if they developed symptoms after returning home.

Legal Considerations for Affected Individuals

If you or a loved one sailed on the Symphony of the Seas during the affected dates and later developed symptoms of Legionnaires’ disease, you may have grounds for a legal claim. The attorneys at Legionnaires Lawyers specialize in investigating Legionella outbreaks on cruise ships and determining liability for the cruise line. We can assist you in pursuing compensation for medical costs, pain and suffering, lost income, and other damages.

Contact Us

If you have been diagnosed with Legionnaires’ disease after sailing on the Symphony of the Seas, it is important to seek medical attention immediately. Additionally, consulting with an experienced Legionnaires’ disease attorney can help protect your rights and ensure you receive the compensation you deserve. Our team is ready to help you understand your options and take the necessary steps to hold the responsible parties accountable.