7 May 2026 — A cluster of hantavirus infections aboard a Dutch-flagged cruise ship in the Atlantic Ocean has resulted in three confirmed deaths and additional suspected cases, triggering a coordinated international public health response led by the World Health Organization (WHO). This incident represents a notable emerging event involving a virus typically associated with rodent exposure, now occurring in a confined maritime setting with potential implications for limited human-to-human transmission.
Situation Overview
On 2 May 2026, the WHO was notified of severe acute respiratory illnesses among passengers and crew on the MV Hondius, which departed Ushuaia, Argentina, on 1 April 2026. The vessel, carrying 147 individuals (88 passengers and 59 crew members from 23 nationalities), followed an itinerary that included stops in remote regions such as mainland Antarctica, South Georgia, and various Atlantic islands.
As of 4 May 2026, seven cases have been identified: two laboratory-confirmed hantavirus infections and five suspected cases. Three individuals have died, one remains critically ill in an intensive care unit in South Africa, and others report milder symptoms. Illness onset ranged from 6 to 28 April 2026, with symptoms progressing rapidly from fever, headache, gastrointestinal issues, and myalgia to pneumonia, acute respiratory distress syndrome, and shock.
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