Nearly 100 Sickened in Major Norovirus Outbreak on Royal Caribbean Cruise Ship

A Royal Caribbean cruise ship has docked in Miami after a significant norovirus outbreak. Nearly 100 passengers fell ill during the 13-day voyage. The ship, Serenade of the Seas, arrived at PortMiami on Thursday.

The Centers for Disease Control and Prevention (CDC) is investigating the outbreak. This incident is part of a larger trend of gastrointestinal illnesses on cruise ships this year.

Outbreak Details and Passenger Account

The CDC confirmed 94 passengers and 4 crew members reported illness. Symptoms included diarrhea and vomiting. The ship was carrying 1,874 passengers and 883 crew members.

One passenger, Bob Pettit, shared his experience. He described the illness as hitting “hard, violently.” Pettit, 87, said he had never been so sick in his life.

The cruise began in San Diego on September 19. It made stops in Mexico, Costa Rica, and Colombia before its final arrival in Miami.

Understanding Norovirus and Cruise Ship Risks

Norovirus is a highly contagious stomach bug. Symptoms like vomiting and diarrhea typically appear 12 to 48 hours after exposure. It spreads through contaminated surfaces, food, or close contact.

According to the CDC, this is one of 19 gastrointestinal outbreaks on cruise ships in 2025. Fourteen of these were confirmed as norovirus. The CDC notes these illnesses spread quickly in closed environments like cruise ships.

This recent norovirus outbreak highlights the persistent challenge of containing contagious illnesses at sea. Cruise lines continue to implement strict sanitation protocols to protect passengers.

Info at your fingertips

What are the symptoms of norovirus?

Common symptoms include diarrhea, vomiting, nausea, and stomach pain. These usually begin 12 to 48 hours after exposure to the virus.

How does norovirus spread on a cruise ship?

The virus spreads easily through contaminated surfaces, food, and liquids. It can also spread through direct contact with an infected person.

How common are norovirus outbreaks on cruises?

The CDC has recorded 14 norovirus outbreaks on cruise ships so far in 2025. Gastrointestinal illnesses are a known risk in semi-enclosed environments.

What should you do if you get sick on a cruise?

Immediately report your illness to the ship’s medical staff. Isolate yourself in your cabin to prevent spreading the virus to other passengers.

How can passengers reduce their risk of norovirus?

Frequent and thorough hand washing with soap and water is the best defense. Avoid touching your face and use hand sanitizer as a supplementary measure.