On April 23, 2025, the Viking Polaris cruise ship concluded its two-week voyage from Toronto to New York City amidst a gastrointestinal illness outbreak that affected over 30 individuals, including 28 passengers and 4 crew members. The Centers for Disease Control and Prevention (CDC) is investigating the incident, with norovirus suspected as the potential cause.
Outbreak Overview
The outbreak was first reported to the CDC’s Vessel Sanitation Program (VSP) on April 18, 2025. Affected individuals exhibited symptoms such as vomiting and diarrhea. The CDC is currently testing stool samples to confirm the causative agent.
Response Measures
In response to the outbreak, Viking Polaris implemented its outbreak prevention and response plan, which included:
- Enhanced cleaning and disinfection procedures
- Isolation of ill passengers and crew members
- Consultation with the CDC’s VSP regarding sanitation procedures and illness reporting
- Collection of stool specimens for testing
The VSP is remotely monitoring the situation, including reviewing the ship’s outbreak response and sanitation measures.
Norovirus and Cruise Ships
Norovirus is a highly contagious virus that causes vomiting and diarrhea. According to the national food poisoning lawyer, Tony Coveny, it is often a cause of gastrointestinal illness outbreaks on cruise ships due to the close living quarters and shared dining areas. Symptoms typically develop 12 to 48 hours after exposure and last 1 to 3 days.
Broader Context
This incident marks the 13th gastrointestinal illness outbreak on a cruise ship reported to the CDC in 2025. Of the previous 12 outbreaks, 10 were confirmed as norovirus cases. The CDC’s VSP continues to monitor and assist cruise ships in preventing and responding to such outbreaks.
Final Note
The Viking Polaris outbreak underscores the importance of stringent sanitation protocols and rapid response measures in managing gastrointestinal illnesses on cruise ships. As the CDC continues its investigation, the cruise industry remains vigilant in implementing health and safety practices to protect passengers and crew members.
