USA TODAY: By Nathan Diller – Nearly 100 Holland America Line passengers got sick in a norovirus outbreak.

Among 2,522 guests on the cruise line’s Koningsdam ship, 98 reported being ill, along with 12 crew members, according to the Centers for Disease Control and Prevention. Their main symptoms were diarrhea and vomiting.

Koningsdam is currently sailing a round-trip cruise visiting Hawaii and French Polynesia that departed from San Diego on February 17, according to CruiseMapper. Holland America and the ship’s crew increased cleaning and disinfection and isolated sick passengers and crew following the outbreak, among other steps, the CDC said.

“At Holland America Line, the safety and well-being of our guests and crew is our top priority. During the current voyage, a number of guests on Koningsdam reported symptoms of gastrointestinal illness,” a spokesperson for the line told USA TODAY in an emailed statement. “The cases were mostly mild and quickly resolving. We initiated enhanced sanitation protocols to minimize further transmission and the incidence of cases has since declined significantly.”

The news comes after more than 125 Cunard Line passengers got sick in a gastrointestinal illness outbreak earlier this year. Norovirus cases have also risen in the U.S. in recent weeks.

The CDC logged 14 cruise ship outbreaks that met its threshold for public notification in 2023, more than any year between 2017 and 2019. Norovirus was listed as the causative agent in all but one.

The virus is frequently associated with cruises, but Ben Lopman, a professor of epidemiology at Emory University’s Rollins School of Public Health, told USA TODAY last year that cruises make up a “tiny minority of norovirus outbreaks.” The majority take place in health care settings such as nursing homes.

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