Hantavirus Outbreak on MV Hondius Cruise Ship Leads to Multiple Cases and International Response

A hantavirus outbreak aboard the MV Hondius cruise ship has led to multiple confirmed cases and fatalities, prompting international health responses and monitoring efforts. The Dutch-flagged vessel departed Ushuaia, Argentina, on April 1, 2026, with approximately 150 passengers and crew. The first passenger developed symptoms on April 6 and died aboard the ship on April 11. Subsequent cases have been reported among passengers and crew from various countries.

As of May 12, 2026, the World Health Organization (WHO) has confirmed seven cases of hantavirus linked to the MV Hondius, including three deaths. The virus strain identified is the Andes virus, known for its potential human-to-human transmission. The outbreak has affected individuals from multiple countries, including the United States, France, Spain, and the Netherlands.

In the United States, 18 individuals who were aboard the MV Hondius have been repatriated and are under medical observation. Sixteen are being monitored at the University of Nebraska Medical Center, with one individual in a biocontainment unit and the others in quarantine. Two additional passengers are at Emory University Hospital in Atlanta, Georgia, one of whom is symptomatic but has tested negative for the Andes variant of hantavirus. Health officials emphasize that the risk to the general public remains low.

In France, health authorities have confirmed one case among repatriated passengers. The infected individual is hospitalized in critical condition. The French government has implemented strict containment measures, including a 42-day quarantine for those exposed, to prevent further transmission. French Health Minister Stéphanie Rist stated that, as of May 12, 22 contact cases have been identified and are undergoing testing.

The MV Hondius is currently en route to Rotterdam, Netherlands, with 25 crew members and two medical professionals remaining on board. The ship is expected to undergo thorough sanitization upon arrival. Oceanwide Expeditions, the vessel's operator, is coordinating with Dutch health authorities to finalize plans for the ship's arrival and decontamination procedures.

The WHO continues to monitor the situation closely and has stated that, while additional cases may emerge due to the virus's incubation period, a larger outbreak is not anticipated at this time. WHO Director-General Dr. Tedros Adhanom Ghebreyesus emphasized the importance of international cooperation in managing the outbreak and preventing further spread.