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Norovirus outbreak on Royal Caribbean cruise in US: Symptoms, risks, and safety measures

Norovirus has affected passengers on the Royal Caribbean Serenade of the Seas. Learn how to protect yourself from infection, spot symptoms, and prevent spreading the virus while on a cruise.

October 03, 2025 / 17:58 IST
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Cruises are exciting adventures — but viruses like norovirus remind us to take precautions. Clean hands, mindful sharing, and early medical alertness go a long way. (Image: Pexels)

A norovirus outbreak has struck the Royal Caribbean cruise liner Serenade of the Seas, leaving nearly 100 passengers and crew members ill. The virus—often called the “stomach flu” or “stomach bug”—is highly contagious, causing sudden vomiting, diarrhoea, nausea, stomach pain, and dehydration. As cruises are at high risk for such contagious spread, knowing preventive measures can help you stay safe at sea.

What Is Norovirus? Norovirus is a condition that causes acute gastroenteritis, or inflammation of the stomach and intestines. It spreads fast through:

The illness shows up usually 12 to 48 hours after exposure, Symptoms include: Also Read: Stomach infections in kids during monsoon: Prevent diarrhoea, stomach cramps in kids in rainy season

If left unchecked and untreated, dehydration can become serious, especially for children, older adults, or those with weakened immunity.

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Why are Cruise Ships at Risk

In essence, cruise ships are floating cities, with:


These circumstances facilitate the rapid spread of viruses such as norovirus. In this outbreak, over 94 passengers and 4 crew members fell ill as Serenade of the Seas made its journey from San Diego, starting September 19, heading toward Miami. The US Centres for Disease Control and Prevention (CDC) confirmed the total.

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