The MV Hondius, a cruise ship that departed Ushuaia, Argentina, on April 1, is now the center of a hantavirus outbreak with no precedent in such a setting. Three passengers have died, and seven others are ill, according to reports.
The ship is currently anchored off Cape Verde, and passengers remain unable to disembark. The World Health Organization (WHO) is coordinating the international response to the crisis.
The suspected cause of the outbreak is hantavirus, a rodent-borne pathogen that has no cure and no approved vaccine. Hantavirus is not typically associated with cruise ships, making this outbreak particularly unusual.
Notably, authorities in Tierra del Fuego, Argentina—the province from which the ship departed—have confirmed that no hantavirus cases have ever been recorded there. However, the WHO notes that the virus is endemic in other regions of Argentina and Chile.
The MV Hondius was on a voyage that included transiting Antarctica and the island of St. Helena before the outbreak was detected. The ship’s itinerary and the origin of the virus remain under investigation.