A Deadly Virus Hit a Cruise Ship. Here’s How the World Is Racing to Stop It.
When the MV Hondius left Argentina on April 1, passengers expected an Atlantic voyage full of remote wonders. Instead, they got a nightmare. A rare, deadly strain of hantavirus—Andes virus—slipped aboard. Within weeks, three passengers died. Nine others fell ill, including the ship’s doctor and a guide. Three of the sick are British.
Authorities scrambled. The ship was turned away from Cape Verde, then anchored off Tenerife. On Sunday, the first evacuees left under tight control. Twenty-two Britons were flown to a Merseyside hospital for isolation. The U.S. flew 17 Americans home, one of them positive but symptom-free, another with mild symptoms. France placed five nationals in strict isolation after a passenger showed signs on a charter flight.
Dr. Charlotte Hammer, an infectious disease epidemiologist at Cambridge, says the strain is known—which helps. “It’s transmitted from specific rodents, and we’ve seen human-to-human spread,” she explains. “But with 20 nationalities on one ship, coordination is a challenge.”
Experts call this work “disease detective” work: tracing every passenger, testing theories, checking past studies. The World Health Organization leads the global effort, with Dutch, Spanish, and other authorities pitching in. The likely scenario: one or two people caught the virus in South America before boarding, then passed it to a few others on the ship.
Containment is the goal. Everyone who sailed is being tracked. “They have a strong motivation to come forward,” Hammer notes. “It’s a scary disease, and the news coverage has been massive.”
Cruise ships, ironically, make the job easier. Cabins are small, air circulation limited, and passengers stay in close contact. Once the outbreak was spotted, keeping people onboard until a safe exit was simple. Harder: finding the 29 who left early. But all had tickets traceable to remote stops.
Hammer says public risk is low. This virus needs sustained, close contact to spread. Unlike COVID, it doesn’t travel easily in the air before symptoms hit. “If this were COVID,” she says, “we’d be in deep trouble.”
Still, the scare is a warning. The U.S. has cut funding for infectious disease research and left the WHO. Argentina did the same. “Another pandemic is likely,” Hammer says, “probably from a zoonotic virus hitting a major transport hub.” This contained crisis may be a quiet alarm bell.