Hantavirus Outbreak Aboard MV Hondius Leads to Multiple Deaths and International Response

An outbreak of the Andes strain of hantavirus aboard the MV Hondius cruise ship has resulted in three deaths and prompted a coordinated international health response. The vessel, operated by Oceanwide Expeditions, departed Ushuaia, Argentina, on April 1, 2026, with approximately 150 passengers and crew from 23 nationalities. The first passenger developed symptoms on April 6 and died on April 11. Subsequent cases led to two more fatalities, including the initial victim's spouse, who disembarked in Saint Helena and later died in Johannesburg.

The World Health Organization (WHO) confirmed that the virus involved is the Andes strain, known for its potential human-to-human transmission, though such cases are rare. French health authorities, including the Pasteur Institute, analyzed the virus and found it consistent with known South American strains, with no new mutations indicating increased transmissibility or severity.

The ship made several stops during its voyage. On April 24, it docked at Saint Helena, where 23 passengers disembarked and traveled to nine different countries. The vessel later attempted to dock in Cape Verde but was denied due to health concerns. Eventually, Spanish authorities permitted the ship to dock in Tenerife on May 10, where a complex international evacuation was coordinated.

As of May 13, the WHO reported 11 cases linked to the outbreak, including three deaths. Health officials emphasize that the risk to the general public remains low, and all necessary precautions are being taken to monitor and contain the situation.