Hantavirus Outbreak Reported on Cruise Ship MV Hondius
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Hantavirus Outbreak Reported on Cruise Ship MV Hondius
- An outbreak of Andes hantavirus on the MV Hondius cruise ship has led to 11 reported cases and three deaths as of May 16, 2026.
- The World Health Organization was notified on May 2, 2026, about the cluster of severe respiratory illness aboard the Dutch-flagged vessel.
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A hantavirus outbreak has been confirmed on the MV Hondius, an expedition cruise ship that departed Ushuaia, Argentina, on April 1, 2026. As of May 16, a total of 11 cases have been reported, including eight confirmed, two probable, and one inconclusive, with three fatalities. The World Health Organization (WHO) was first notified of the cluster of severe acute respiratory illness on May 2, 2026.
The virus identified in the outbreak is the Andes virus, a type of hantavirus primarily found in South America. While hantaviruses are typically transmitted to humans through contact with infected rodent urine, droppings, or saliva, the Andes virus is unique among hantaviruses for its documented, albeit rare, potential for human-to-human transmission through close and prolonged contact.
The MV Hondius carried 147 passengers and crew from 23 different countries, traversing the South Atlantic with stops in remote regions including Antarctica, South Georgia, and Saint Helena. The working hypothesis suggests the initial case acquired the infection on land before boarding the ship, with subsequent evidence indicating possible human-to-human transmission onboard.
International health authorities, including the WHO, the European Centre for Disease Prevention and Control (ECDC), and the U.S. Centers for Disease Control and Prevention (CDC), have been coordinating the response, which involves investigations, case isolation, medical evacuation, and repatriation efforts. The overall risk posed by this event to the global population is currently assessed as low. Symptoms of h