More than 100 people got sick in a norovirus outbreak during an AIDA Cruises voyage.

Among the 2,007 guests on the German cruise line’s AIDAdiva ship, 95 reported being ill, along with six crew members, according to the Centers for Disease Control and Prevention (AIDA is part of Carnival Corp.). Their main symptoms were vomiting and diarrhea.

The ship departed on a 133-day cruise from Hamburg, Germany, on Nov. 10 with scheduled stops in England, the U.S., Mexico, Costa Rica, and more, according to CruiseMapper.

The cruise line implemented heightened disinfection and cleaning measures and isolated sick passengers and crew, among other steps, the health agency said. AIDA did not immediately respond to USA TODAY’s request for comment.

The CDC has logged 21 outbreaks of gastrointestinal illness on cruise ships that met its threshold for public notification in 2025, 16 of which were caused by norovirus. The illness caused 15 of 18 total outbreaks in 2024, and 13 out of 14 the prior year.

"While the number of recent cruise ship outbreaks has been higher than in years prior to the pandemic, we do not yet know if this represents a new trend," the CDC told USA TODAY in late April. "However, CDC data show a newly dominant strain is currently associated with reported norovirus outbreaks on land. Ships typically follow the pattern of land-based outbreaks, which are higher this norovirus season."

The illness is often associated with cruise ships, but those represent only 1% of reported outbreaks.

"(Outbreaks are) often taking place within the community, and oftentimes we don't know that they're happening," Sarah R. Michaels, an assistant professor at Tulane University’s Celia Scott Weatherhead School of Public Health and Tropical Medicine, previously told USA TODAY. "Really, when we have these areas where people … are in really close contact, things like day care facilities, nursing homes and cruise ships, it’s more likely (to be) diagnosed, reported and brought to our attention."

Nathan Diller is a consumer travel reporter for USA TODAY based in Nashville. You can reach him at ndiller@usatoday.com.

This article originally appeared on USA TODAY: 100+ passengers, crew members sick in cruise norovirus outbreak

Reporting by Nathan Diller, USA TODAY / USA TODAY

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