The virus had weeks to spread before anyone knew what they were looking for.
Over five weeks at sea, a rare and silent illness moved through the passengers of the MV Hondius before anyone knew its name — by the time hantavirus was confirmed, the ship had crossed oceans, the sick had scattered across continents, and at least three people were gone. The Andes strain, one of the few hantaviruses capable of passing between humans, traced its likely origins to the southern reaches of South America, where the voyage had begun. What unfolded is a reminder that in an age of global movement, a single unidentified illness can quietly outpace the systems designed to contain it.
- Three passengers are dead and several others remain in intensive care after a hantavirus outbreak aboard the MV Hondius went undetected for nearly a month as the ship crossed the Atlantic.
- Because the virus was not identified until May 2 — weeks after the first death — infected or exposed passengers had already disembarked at multiple ports and boarded commercial flights to destinations across seven countries.
- The Andes strain at the center of the outbreak is uniquely dangerous among hantaviruses because it can spread directly from person to person, raising the stakes of every untraced contact.
- Cape Verde initially refused to allow anyone off the ship, and two critically ill crew members — including the ship's own doctor — had to be evacuated by air to European hospitals before the vessel was cleared to continue.
- Health authorities in Switzerland, Britain, the Netherlands, France, Singapore, and South Africa are now racing to locate, isolate, and monitor anyone who shared space with passengers who left the ship before the outbreak was known.
A Dutch-flagged expedition cruise ship, the MV Hondius, departed Ushuaia, Argentina on April 1 with more than 140 passengers and crew bound for Antarctica and the remote South Atlantic. Within days, a 70-year-old Dutch man who had sightseeing in Ushuaia before boarding fell ill with fever and respiratory symptoms. He died aboard on April 11. The cause was unknown.
The ship continued its voyage. At St. Helena on April 24, the man's body was removed and his wife — already showing signs of illness — disembarked along with more than two dozen others. The following day she boarded a commercial flight to South Africa with 88 fellow travelers. She collapsed at a South African airport on April 26 and died. Meanwhile, a British passenger fell ill on April 27 and was evacuated to Ascension Island before being transferred to intensive care in South Africa. A German woman became sick on April 28. She died by May 2.
It was only on May 2 that South African health authorities received the first positive hantavirus test — from the British man in intensive care. The Dutch woman's body was tested posthumously and confirmed positive on May 4, the same day the World Health Organization declared an outbreak. By then the ship had reached Cape Verde, where authorities initially barred disembarkation. Two critically ill crew members, including the ship's doctor, were evacuated by air to European hospitals on May 6. Two tested positive. The vessel was then permitted to sail for Spain's Canary Islands.
The virus was identified as the Andes strain — the only hantavirus known to transmit between humans, endemic to Argentina and Chile, precisely where the outbreak's first victim had traveled before boarding. The weeks-long delay in identification had allowed exposed passengers to fan out across the globe on commercial flights. By May 7, health officials in at least seven countries were working to trace contacts and contain an outbreak whose full reach remained unknown.
A Dutch-flagged cruise ship carrying more than 140 passengers and crew members is heading toward Spain's Canary Islands after an outbreak of hantavirus—a rare rodent-borne virus—killed at least three people and spread across multiple continents over the course of five weeks.
The MV Hondius departed from Ushuaia in southern Argentina on April 1, with plans to visit Antarctica and several remote islands in the South Atlantic. On April 6, a 70-year-old Dutch man fell ill with fever, headache, and mild diarrhea. He and his wife had spent time sightseeing in Ushuaia before boarding, and had also traveled in Argentina and Chile. Five days later, on April 11, the man developed respiratory distress and died aboard the ship. At the time, the cruise company could not determine the cause of death.
What followed was a cascade of illness and death that unfolded slowly enough that the true nature of the outbreak remained hidden for weeks. The ship continued its voyage, stopping at Tristan da Cunha on April 15, where six new passengers boarded. On April 24, the dead man's body was removed at St. Helena, and his wife disembarked along with more than two dozen other passengers. The next day, the Dutch woman—who was showing signs of illness—boarded a commercial flight from St. Helena to South Africa with 88 other passengers and crew members. On April 26, she collapsed at an airport in South Africa while attempting to board another flight home and died.
Back on the ship, a British male passenger fell ill on April 27 and was evacuated to Ascension Island before being transferred to intensive care in South Africa, where he presented with high fever, shortness of breath, and pneumonia. On April 28, a German woman passenger became sick as the vessel sailed toward Cape Verde. By May 2, she had died—nearly a month after the first passenger fell ill. That same day, South African health authorities received the first positive test result for hantavirus, from the British man in intensive care. It was only after this confirmation that authorities decided to test the Dutch woman's body posthumously, which also came back positive on May 4.
The World Health Organization declared it an outbreak on May 4. By then, the ship had arrived in Cape Verde waters, where authorities initially refused to allow any disembarkation, though they did send health workers to assist. Two crew members aboard were seriously ill, including the ship's doctor. On May 6, those three people were evacuated and flown to specialized hospitals in Europe. Two tested positive for hantavirus. The ship was then permitted to sail for the Canary Islands.
On May 6, Swiss authorities announced a fifth confirmed case: a man who had left the cruise ship earlier at St. Helena. Health officials in both South Africa and Switzerland identified the virus as Andes virus, the only strain of hantavirus known to spread from person to person. It is found primarily in South America, particularly in Argentina and Chile—the very region where the outbreak's first victim had traveled before boarding.
The delayed identification of the virus created a contact-tracing nightmare. Passengers had disembarked at multiple ports and boarded commercial flights before anyone knew what they were carrying. By May 7, health authorities in Switzerland, Britain, the Netherlands, France, Singapore, South Africa, and elsewhere were isolating and monitoring people who had left the ship at earlier stops and tracing anyone who might have come into contact with them. The full scope of exposure remained unclear, and the work of tracking and containing the outbreak had only just begun.
Citações Notáveis
The World Health Organization says the risk to the wider public is low because the virus can't easily be passed between people.— World Health Organization
A Conversa do Hearth Outra perspectiva sobre a história
Why did it take so long to identify hantavirus as the culprit? The first person died on April 11, but the virus wasn't confirmed until May 2.
The ship kept moving. People disembarked at different ports, scattered across continents. The first death looked like it could have been anything—respiratory distress on a ship. No one suspected a rare rodent-borne virus. It wasn't until the British man got seriously ill and was tested in South Africa that the pattern became visible.
So the wife who died in South Africa—she was already sick when she boarded that commercial flight with 88 other people?
Yes. She had symptoms. She flew from St. Helena to South Africa with nearly 90 other passengers and crew. Then she died at the airport. That's when the scope of the problem became apparent—not just a ship, but a plane full of people who might have been exposed.
The virus is Andes strain, which spreads person-to-person. How worried should people be?
The WHO says the risk to the general public is low because the virus doesn't transmit easily between people. But in close quarters—a ship, a plane—the risk is real. That's why authorities are now isolating and monitoring everyone who left the ship at earlier stops.
What about the people still on the ship? More than 140 are still aboard.
They're heading to the Canary Islands. Two crew members were evacuated on May 6, including the ship's doctor. The others are still there, presumably being monitored. The ship was essentially in limbo for days—Cape Verde wouldn't let anyone off until those sick people were evacuated.
This started in Argentina, spread across the Atlantic, and now involves seven countries. How do you even trace all of that?
You don't, not completely. That's the hard truth. People left at different times, flew to different places, went home to different countries. Health authorities are doing their best, but some contacts will be missed. The virus had weeks to spread before anyone knew what they were looking for.