The BRICS TimesA rare and deadly hantavirus outbreak on the MV Hondius a Dutch expedition cruise ship has now reached eight cases, including three deaths. The World Health Organization has stepped in, launching contact tracing across multiple countries as the vessel remains stranded off West Africa.
A Deadly Illness Breaks Out Mid-Ocean
A routine polar expedition has turned into a medical emergency one that has now drawn the World Health Organization into a global response effort. The MV Hondius, a Dutch-flagged cruise ship operated by Oceanwide Expeditions, set sail from Ushuaia, Argentina, on April 1, 2026. It was carrying 147 passengers and crew members through some of the world’s most remote Atlantic waters. But by early May, hantavirus a rare and often fatal rodent-borne illness had claimed three lives on board.
Eight cases have now been identified in total. Three are confirmed hantavirus infections. Five others remain suspected cases under active investigation. Among those ill, one British national is fighting for his life in an intensive care unit in Johannesburg, South Africa. Health authorities say his condition is slowly improving.
The Outbreak Timeline, How It Unfolded
The first known victim was a 70-year-old Dutch man who died aboard the ship on April 11. His 69-year-old wife fell ill next. She disembarked at Saint Helena on April 24 and boarded a flight to South Africa. She collapsed at the Johannesburg airport and died in the emergency department on April 26. Lab tests later confirmed hantavirus infection.
A British passenger on board fell seriously ill around April 27. He was medically evacuated to South Africa, where PCR testing confirmed hantavirus on May 2. Then on May 2 a German woman died on board the ship after rapidly developing pneumonia. Her case is treated as a suspected infection, although formal confirmation is still pending.
WHO later confirmed an eighth case a passenger who had already disembarked was undergoing treatment at a hospital in Switzerland after testing positive for hantavirus.
WHO Steps In, Contact Tracing Goes Global
On May 2, 2026, the World Health Organization received formal notification from the UK’s International Health Regulations focal point. Within hours, a coordinated international response was underway. Authorities from Cape Verde, the Netherlands, Spain, South Africa, and the United Kingdom have all joined the effort.
Contact tracing has extended far beyond the ship itself. Officials are now tracking down passengers who shared a flight to Johannesburg with the Dutch woman who died. Medical staff at Ascension Island where one patient received treatment are self-monitoring for symptoms.
“We do believe that there may be some human-to-human transmission that’s happening among the really close contacts, the husband and wife, people who’ve shared cabins,” said Maria Van Kerkhove, WHO’s Director of Epidemic and Pandemic Preparedness and Prevention.
WHO currently rates the global risk from this outbreak as low. Hans Kluge, WHO’s Regional Director for Europe, was direct: “There is no need for panic or travel restrictions.”
Where Did the Virus Come From?
That question is still not fully answered and scientists say it matters enormously. Hantavirus usually spreads through contact with infected rodent urine, droppings, or saliva. It does not typically pass from person to person. However, one strain the Andes virus, found primarily in Chile and Argentina is known to spread between humans in rare cases.
The MV Hondius departed from Argentina. WHO believes the Dutch couple may have been exposed to the virus before even boarding the ship possibly during wildlife activities in Argentina. “This cruise ship took off from Argentina, which is why we’re wondering, is it the usual kind, or is it a kind that can be transmitted person-to-person?” said CBS News medical contributor Dr. Céline Gounder.
Crucially no rodents were found aboard the Hondius. Traps showed no signs of infestation, which makes on-board rodent contact unlikely for most passengers. Still, researchers note that the ship stopped at several remote islands during the voyage places where rodent exposure is possible during shore excursions.
“This was an expedition boat and many people were doing birdwatching, things with wildlife,” Van Kerkhove said. “There could be some source of infection on the islands as well for some of the other suspected cases.”
Passengers Stranded: A Political Storm Brews
As the medical investigation continues, nearly 150 people remain confined aboard the MV Hondius, anchored off Praia, the capital of Cape Verde. The island nation sent medical teams to assess patients but refused to allow the ship to dock. Three people, including two ill crew members, are being evacuated by air ambulance to receive urgent care.
The ship’s next destination has sparked a political dispute in Spain. The Spanish government confirmed the MV Hondius would be allowed to dock in Tenerife, one of the Canary Islands. But Fernando Clavijo, the President of the Canary Islands regional government, publicly opposed the decision and urgently sought a meeting with Prime Minister Pedro Sánchez.
One stranded passenger described the experience in raw terms: “We’re people, people with families, with lives, with people waiting for us at home. There’s a lot of uncertainty, and that’s the hardest part.”
What Is Hantavirus And How Dangerous Is It?
Hantavirus is a family of illnesses that can cause severe respiratory failure and death. Symptoms which appeared in all shipboard patients between April 6 and 28 included fever, gastrointestinal distress, rapid-onset pneumonia, acute respiratory distress syndrome, and shock. The disease has a fatality rate ranging from under 1% in parts of Asia and Europe up to 50% in the Americas.
There is no specific cure. There is no approved vaccine. Early supportive care in a full-fledged intensive care unit remains the best available option. Hantavirus pulmonary syndrome the deadly respiratory form of the disease gained wider public attention after it claimed the life of Betsy Arakawa, wife of the late actor Gene Hackman, in 2025.
Despite its severity, WHO and health experts stress this outbreak does not approach pandemic territory. Ann Lindstrand, WHO’s representative for Cape Verde, was asked directly whether hantavirus posed a pandemic-level threat. Her answer: “It’s not.”
