Officials Race to Locate 40 Passengers from Hantavirus-Stricken Cruise Ship

Nearly 40 passengers exposed to the deadly hantavirus outbreak on the MV Hondius cruise ship have reportedly disembarked and scattered across multiple countries, creating an international health challenge as authorities scramble to locate them.

Oceanwide Expeditions, which operates the Dutch-flagged vessel, confirmed Thursday that 29 passengers left the ship on April 24, approximately two weeks after the first death occurred onboard. Dutch officials, however, estimate the number could be closer to 40.

These passengers, representing at least a dozen nationalities, have returned to their home countries across Europe, Africa and beyond, according to the company. The nationalities of two individuals remain unknown, further complicating contact tracing efforts.

The situation has already taken a concerning turn as health officials confirmed that at least one passenger who left the ship—a man who returned to Switzerland—tested positive for the Andes strain of hantavirus. This rare variant has the unusual ability to spread between humans through close contact, unlike most hantavirus strains that typically require direct exposure to infected rodents.

The outbreak has claimed at least three lives so far. A Dutch passenger died on April 11, and his body was removed from the ship at the remote South Atlantic island of St. Helena. His wife disembarked at the same location before traveling to South Africa, where she collapsed and died at Johannesburg airport, becoming the second fatality.

Argentine investigators believe they may have identified the source of the outbreak. Officials told The Associated Press that the leading hypothesis suggests the Dutch couple may have been exposed to infected rodents while visiting a landfill during a bird-watching excursion in Ushuaia, Argentina. They likely contracted the virus before boarding the cruise ship, unknowingly bringing it onboard.

Hantavirus typically spreads through inhalation of aerosolized particles from infected rodent droppings, urine, or saliva. According to the World Health Organization, human-to-human transmission is uncommon but possible, particularly with the Andes strain identified in this outbreak.

The third death and subsequent medical evacuations have highlighted the severity of the situation. A British passenger was flown to South Africa from Ascension Island, according to Oceanwide Expeditions. Three additional individuals, including the ship’s doctor, required airlifting to Europe for treatment as the vessel drifted near Cape Verde.

Public health officials now face the daunting task of reconstructing the travel paths of dozens of potentially exposed passengers. With individuals dispersed across continents and limited records of their movements after disembarkation, authorities in South Africa, Europe, and beyond are racing against time to identify anyone who may have been exposed to prevent further spread.

The situation raises important questions about cruise ship protocols during disease outbreaks and international coordination for contact tracing. While most cruise lines implemented enhanced health screening measures following the COVID-19 pandemic, this hantavirus outbreak presents unique challenges due to its rarity and the specific conditions required for transmission.

The Andes strain of hantavirus is particularly concerning to public health officials. While most hantavirus infections come directly from rodents, the Andes strain has demonstrated person-to-person transmission capabilities in previous outbreaks in South America. Early symptoms often resemble common illnesses, including fever, muscle aches, and fatigue, making initial identification difficult without specialized testing.

As the investigation continues, health authorities across multiple countries are urging anyone who traveled on the MV Hondius during the affected period to contact local health officials immediately, even if they aren’t currently experiencing symptoms.