Health officials and international experts are urgently investigating whether Argentina is the source of a lethal Hantavirus outbreak aboard the MV Hondius, a cruise ship currently navigating the Atlantic. The emergency comes amid reports that several passengers have already returned to their home countries, including the United States.
Argentina is frequently cited by the World Health Organization (WHO) as having the highest incidence of Hantavirus—a rare rodent-borne disease—in Latin America.
The Outbreak: Deaths and Evacuations
The outbreak has proven severe, involving the Andes virus strain, which is notorious for causing Hantavirus Pulmonary Syndrome (HPS), a condition with a high fatality rate.
- Casualties: Three passengers have died: a 70-year-old Dutch man (April 11), his 69-year-old wife (April 26), and a German woman (May 2).
- Medical Emergencies: One passenger remains in intensive care in South Africa, and another former passenger tested positive in Switzerland.
- Recent Evacuations: On Wednesday, three individuals—a British expedition guide, a Dutch ship doctor, and a 65-year-old German passenger—were medically evacuated from the ship near Cape Verde.
The U.S. Connection
Concerns are mounting over 23 passengers who disembarked the MV Hondius at Saint Helena on April 23. These individuals have reportedly returned to their respective countries.
- Monitoring in the US: According to the New York Times, American passengers are currently being monitored by health authorities in Georgia, California, and Arizona.
- Status: As of today, May 7, none of the monitored individuals in the U.S. have shown symptoms of the illness.
The Argentine Investigation
The Argentine Ministry of Health reported 101 infections since June 2025, nearly double the previous year’s figures. Investigators are focusing on the pre-boarding activities of the infected passengers in Ushuaia, the southern Argentine city where the cruise departed on April 1.
The incubation period for Hantavirus is long—ranging from one to eight weeks—making it difficult to determine if the virus was contracted:
- During inland travel in Argentina, Uruguay, or Chile prior to departure.
- During a stop at a remote South Atlantic island.
- Through rare human-to-human transmission on board.
International Cooperation
Argentina has announced it is sending Andes virus genetic material and testing kits to Spain, Senegal, South Africa, the Netherlands, and the UK to assist in rapid detection.
Meanwhile, a diplomatic debate has erupted in the Canary Islands. While Spanish authorities gave the MV Hondius permission to dock in Tenerife, the regional president has expressed significant concern over the potential public health risk.
Expert Insight: The Climate Change Link
Specialists in Argentina, including infectious disease expert Hugo Pizzi, suggest that climate change is accelerating the spread. Rising temperatures are turning parts of Argentina more “tropical,” leading to ecosystem shifts that allow the rodents carrying the virus to thrive and multiply in new territories.
“There is no doubt that over time, Hantavirus is spreading further and further,” Pizzi stated, noting that higher temperatures provide more seeds and food for the carrier mice.
