Three passengers are dead. At least three others are sick. And a cruise ship is sitting off the coast of West Africa while international authorities try to figure out what exactly happened on board. The vessel is the MV Hondius, a polar expedition cruise ship, and the suspected culprit is hantavirus, a rare and often lethal pathogen typically spread by rodents. This is the kind of story that sounds like a movie plot, except it’s very real, and it’s unfolding right now.
What Happened on the MV Hondius
The MV Hondius departed from Ushuaia, Argentina, roughly seven weeks ago on what was supposed to be a once-in-a-lifetime expedition cruise. The itinerary was the kind of thing adventure travelers dream about: stops in Antarctica, the Falkland Islands, South Georgia, Nightingale Island, Tristan da Cunha, and the remote British territory of Saint Helena. From there, the ship was heading across the Atlantic toward Spain’s Canary Islands. About 150 passengers and around 70 crew members were on board.
Then people started getting sick. According to the World Health Organization, six people total have been affected. Three of them are now dead. One person has a confirmed case of hantavirus. The other five cases are suspected but not yet confirmed. The ship is now anchored off Praia, the capital of Cape Verde, while authorities figure out next steps.
Who Are the Victims
Two of the three people who died were a married couple from the Netherlands. The husband, a 70-year-old man, was the first person on the ship to show symptoms. According to South Africa’s Department of Health, he presented with fever, headache, abdominal pain, and diarrhea. He became gravely ill and was declared dead on arrival when the ship reached Saint Helena Island. His remains are still there, awaiting repatriation back to the Netherlands.
His 69-year-old wife also fell ill on board. She was evacuated to South Africa but collapsed at Johannesburg’s international airport while trying to catch a flight home. She died at a nearby medical facility. A source close to the situation confirmed the Dutch couple were among the dead. Details on the third death have not yet been released publicly.
A fourth case involves a 69-year-old British man who was also evacuated to Johannesburg. He tested positive for hantavirus and is currently in intensive care. He is alive but in serious condition. The UK Foreign Office confirmed they are monitoring the situation and are in contact with the cruise company. Two other symptomatic individuals, both crew members, remain on board the Hondius.
Why Cape Verde Won’t Let Them Off the Ship
Here’s where things get complicated. The Hondius is sitting right there in the port of Praia, but Cape Verdean authorities have not authorized passengers to get off. Local health officials did board the vessel to assess the situation, but as of the latest reports, they haven’t approved the transfer of sick individuals to facilities on land. That means the two symptomatic crew members are stuck on the ship without access to a proper hospital.
Oceanwide Expeditions, the Dutch company that operates the Hondius, put out a statement saying their priority is making sure the two symptomatic people on board “receive adequate and expedited medical care.” They also said they’re working to establish the full facts and coordinate next steps. The WHO has been facilitating coordination between multiple countries, including the Netherlands, South Africa, the UK, and Cape Verde, to figure out evacuations and repatriation.
Dutch authorities are trying to arrange the repatriation of affected passengers from Cape Verde back to the Netherlands, but that depends on local officials giving the green light. It’s a messy, multi-country bureaucratic situation happening while people are still sick.
What Is Hantavirus and Why Is This So Unusual
Hantavirus is a family of viruses carried by rodents, mainly mice and rats. Humans typically catch it by coming into contact with rodent droppings, urine, or saliva. You can also get it by inhaling contaminated dust, which is how a lot of cases happen in rural areas. The disease is rare. Since the CDC started tracking it in 1993, fewer than 900 cases have been reported in the United States.
But when it does hit, it hits hard. The virus can progress to something called hantavirus pulmonary syndrome, which fills the lungs with fluid and causes a catastrophic drop in blood pressure. About 38% of people who develop those severe respiratory symptoms don’t survive. There is no vaccine. There is no antiviral treatment. There is no cure. Doctors can only try to support the body while it fights the virus on its own.
You might remember hantavirus making headlines in 2025 when Betsy Arakawa, the wife of actor Gene Hackman, died from the virus in New Mexico. In that part of the country, the most common carrier is the deer mouse.
What makes this cruise ship outbreak so unusual is that hantavirus almost never clusters like this. It’s typically a one-off, isolated infection. Someone cleans out an old shed, stirs up some mouse droppings, and gets sick. You don’t usually see six people come down with it at the same time in the same place. Dr. Scott Miscovich, a family physician, told reporters that when he first read about the outbreak, he thought it was a misprint.
How Did This Happen on a Ship
That’s the big question nobody has answered yet. Hantavirus is not typically spread from person to person. There is one known exception: the Andes virus, a variant primarily found in Chile and Argentina, where the Hondius departed from. There is limited evidence that the Andes variant can spread between humans, but it’s considered rare.
So there are basically two possibilities investigators are looking at. The first is that the ship itself was contaminated with rodent droppings or urine, maybe from rats or mice that got on board in port. A cruise ship traveling through remote, wild regions with stops at places like Antarctica and sub-Antarctic islands isn’t exactly a sterile environment. The second possibility is that someone picked up the Andes variant on land, possibly in Ushuaia or somewhere else in southern South America, and it then spread between people in the confined environment of the ship.
Interestingly, the Ministry of Health in Tierra del Fuego province, where Ushuaia is located, said there has never been a reported case of hantavirus in that province. Hantavirus is present in other parts of Argentina and Chile, but not in the region where this cruise started. That makes the second theory trickier, though not impossible. Sequencing of the virus is ongoing, which should eventually tell investigators which strain they’re dealing with and give them a clearer picture of how it spread.
Dr. Miscovich noted that if this turns out to be confirmed human-to-human transmission, it would be a significant moment for infectious disease research. His exact words: it will “change the future of travel medicine and infectious disease and tropical medicine.”
The Ship Itself
The MV Hondius isn’t one of those massive floating resorts you see docked in Miami. It’s a small expedition vessel, purpose-built for polar exploration. Commissioned in 2019, it’s the first ship in the world registered as Polar Class 6, meaning it meets the highest international standards for ice-strengthened cruise ships. It’s about 350 feet long and carries up to 170 passengers in cabins ranging from small porthole rooms to grand suites with balconies. The typical passenger is between 45 and 65 years old, an independent traveler with a taste for remote destinations.
Oceanwide Expeditions, headquartered in Vlissingen, Netherlands, has been running small-ship polar voyages since 1993. They deploy the Hondius in the Arctic during northern hemisphere summers and send it south to Antarctica for the winter months. This particular voyage was a lengthy Atlantic crossing that hit a long list of remote islands and territories.
What Happens Next
The WHO has notified global health authorities under international regulations and is conducting what they call a “full public health risk assessment.” South Africa’s National Institute for Communicable Diseases is doing contact tracing around Johannesburg to identify anyone else who may have been exposed to the infected passengers who were evacuated there. Lab testing and genetic sequencing of the virus are still ongoing.
As of the most recent reports, discussions were underway about whether the two remaining sick passengers should be isolated in a hospital in Cape Verde, after which the ship would continue on to the Canary Islands. But nothing has been decided. The roughly 150 passengers who aren’t showing symptoms are apparently still on the ship, waiting.
For the families of the three people who died, including the Dutch couple who were probably expecting to come home with photos of penguins and icebergs, this is a nightmare that came out of nowhere. For the rest of the passengers stuck on a ship anchored off Cape Verde, it’s an agonizing wait. And for the scientists and public health officials trying to piece together how a rare rodent virus ended up killing people on a cruise ship in the middle of the Atlantic, there are more questions right now than answers.
