New Cruise Ship Outbreak Raises Concerns Amid CDC Staff Reductions

Just two weeks after notable staff reductions at the U.S. Centers for Disease Control and Prevention (CDC), reports of illness outbreaks on cruise ships persist. The latest outbreak occurred onboard the Viking Polaris, which is currently on an 11-night spring itinerary from Toronto to New York. This sailing departed Toronto on April 12, 2025, and is set to arrive in New York on April 23.

According to the CDC, 28 out of the 355 guests onboard—accounting for nearly 8%—have reported gastrointestinal issues, including vomiting and diarrhea. Additionally, four crew members (1.5%) also exhibited similar symptoms. Cruise ships must report an outbreak when at least 3% of either guests or crew experience such highly contagious symptoms.

It is important to note that the reports reflect cumulative data throughout the voyage and may include individuals who reported illnesses at different times over the nine-day period, rather than all at once. In response, the crew of Viking Polaris has implemented several measures to contain the outbreak, including increased sanitation, isolation of symptomatic individuals, and investigations to identify the cause of the illness. As of now, the specific cause has not been determined.

This outbreak is part of a troubling trend, as there have already been 12 reported outbreaks in 2025, with 10 of them confirmed to be norovirus. The remaining incidents were related to E. coli and ciguatera, a toxin often found in contaminated fish. The CDC’s Vessel Sanitation Program has felt the impact of recent staff cuts, raising concerns about the continuity of monitoring cruise ships for outbreaks.

While the Viking Polaris outbreak may be disconcerting, timely reporting is crucial. Ongoing transparency allows travelers to make informed decisions regarding their future bookings. Norovirus outbreaks have been increasing, with ten reported in just under four months, compared to 15 for all of 2024 and 13 in 2023.

Passengers should keep in mind that the best way to avoid norovirus is to practice thorough hand hygiene. Regular handwashing, especially before meals and after using the bathroom, is essential in preventing the spread of illness onboard cruise ships.

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