No one books a cruise expecting to spend part of it feeling unwell, or worse, bringing an illness home instead of good memories.
But over the past year, stories about cruise ship illnesses have become more common, and that has naturally made some travelers pause and wonder what’s really going on.
Reports of gastrointestinal outbreaks did increase in 2025, and they’re now discussed more openly in cruise news and online communities than they were in the past. That visibility raises reasonable questions. Is cruising becoming less safe? Are outbreaks becoming more common? And should this be something travelers factor into their plans?
Here’s what’s really happening, why it matters, and what it means for your next cruise.
Yes, Outbreaks Are Rising, But the Risk Remains Low
According to the CDC’s Vessel Sanitation Program, cruise lines reported 22 gastrointestinal outbreaks in 2025. That’s up from 18 in 2024 and 14 in 2023 — a noticeable increase over the past few years.
Cruise lines are only required to report an outbreak once at least 3 percent of passengers or crew on a single sailing experience gastrointestinal symptoms. That means the system tracks notable clusters, not isolated cases, and not every minor illness onboard. Most cases of stomach illness onboard never become official outbreaks at all, because they don’t reach that 3 percent reporting threshold.
Now compare that to scale. In 2025, about 37.7 million people went on cruises worldwide, across tens of thousands of sailings. Those 22 reported outbreaks represent a very small fraction of total cruises.
So yes, the number went up — but the actual likelihood of an individual cruiser being affected remains low.
Why Outbreak Reports Are Becoming More Common
There isn’t one single reason the number rose. It’s the result of several trends overlapping — along with a fair amount of timing and chance.
Cruising itself is bigger than ever. Ships are sailing full again, more itineraries are running year-round, and more people onboard naturally means more opportunities for any kind of illness to appear somewhere. When millions more people are traveling, even rare events become more visible simply because the scale is larger.
Seasonal viruses also played a role. Bugs like norovirus surge every winter on land — in schools, offices, hospitals, and family gatherings — which means more people are boarding ships already incubating something without realizing it. In recent years, a highly contagious variant known as GII.17 has also been circulating more widely, making outbreaks easier to trigger once the virus enters a crowded environment.
And a lot of this ultimately comes down to timing and luck. If one infected passenger happens to board at the start of a sailing, interacts with the right set of shared spaces, or attends a crowded event early in the voyage, the chances of wider spread increase.
Public awareness has also grown significantly. Every reported outbreak is now quickly shared through news sites, cruise forums, and social media, making these events feel far more common than they actually are. A situation that once stayed inside an official report now becomes a headline, a discussion thread, and a shared story.
The Cruise Lines That Showed Up the Most (and the Least)
Looking at the CDC’s 2025 outbreak reports, a few cruise lines appear more often than others — and a few don’t appear at all. That naturally leads people to wonder whether certain brands are riskier than others.
Holland America Line appeared most frequently, with several ships reporting cases during the year. A few of the same ships, like Eurodam and Rotterdam, showed up more than once. Princess Cruises and Royal Caribbean also appeared multiple times, usually across different ships.
At the other end of the spectrum, large brands such as Carnival Cruise Line, Norwegian Cruise Line, and Disney Cruise Line didn’t appear in the reports at all in 2025.
It can easily feel like a scorecard of who did well and who didn’t. But how long a voyage runs, what season it sails in, and simple timing all affect whether an illness spreads far enough to be reported. So these lists are better read as snapshots of when illness happened, not verdicts on any particular brand.
Read more: The Dirtiest Cruise Ships According to CDC (Including an Ultra-Luxury Vessel)
Why This Feels More Alarming Than It Is
Illness stories on cruise ships tend to feel more personal than similar stories about hotels or flights. A cruise is not just transportation — it’s a contained vacation experience that people plan carefully and emotionally invest in.
When something disrupts that experience, especially something involving health, it feels more serious.
The word “outbreak” also carries weight, even when the actual number of people involved is small relative to the size of the ship. Add in the speed and volume of online sharing, and rare events can easily feel constant.
This doesn’t mean concern is irrational. It means perception is shaped by how information is presented.
Should Cruisers Actually Be Worried?
Cruising is not risk-free, but it is not becoming unsafe.
Cruise ships are among the most regulated environments in the travel industry, with regular inspections, sanitation protocols, and onboard medical teams trained specifically to manage and contain illness quickly.
In many cases, a cruise ship is better equipped to monitor and respond to illness than a resort, a large hotel, or a busy transportation hub.
The risk hasn’t fundamentally changed. Awareness of that risk has — and the way cruise lines respond when something does appear is a big part of why outbreaks are usually contained quickly. That response is worth understanding.
How Cruise Ships Usually Respond to an Outbreak
When a ship detects a rise in gastrointestinal illness, the onboard medical team begins monitoring immediately — often before passengers notice anything. If cases continue to rise, enhanced sanitation protocols are activated, targeting high-touch areas like handrails, elevator buttons, restrooms, and dining spaces with stronger disinfectants designed to kill viruses such as norovirus.
Passengers who report symptoms are usually asked to isolate in their cabins for a short time, with meals delivered and regular check-ins from medical staff. This isn’t a punishment — it’s one of the most effective ways to limit spread. Self-service buffets may be switched to crew-served stations, and hand-washing enforcement becomes stricter at dining venues.
Behind the scenes, the ship coordinates with shore-side medical authorities and regulatory programs such as the CDC’s Vessel Sanitation Program when required. These steps are planned in advance, practiced regularly, and designed to contain illness quickly so the voyage can continue with minimal disruption.
How Travelers Can Reduce Their Risk Even Further
For travelers who want to be proactive, a few simple habits can make a real difference. Washing your hands with soap and water — especially before eating — is one of the most effective steps, since hand sanitizer doesn’t kill all gastrointestinal viruses.
If you do start to feel unwell during the cruise, reporting it early gives the medical team a chance to help and reduce the chance of further spread. And if you’re ill, using your cabin bathroom rather than public restrooms can also limit exposure for other passengers.
None of these steps are dramatic, but they’re practical, easy, and surprisingly effective at keeping everyone healthier onboard.
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