The World Health Organization suspects that rare human-to-human transmission of hantavirus may have occurred among close contacts aboard the MV Hondius cruise ship, where a cluster of infections has emerged. As of May 4, 2026, seven cases have been identified, including two laboratory-confirmed and five suspected cases.
Key statistics:
- A total of seven cases of hantavirus infection have been identified.
- Three fatalities have been recorded among the infected individuals.
- One patient remains in critical condition under medical care in South Africa.
- The index case died on April 11, 2026, while still on board the ship.
- Symptom onset for the infected varied from April 6 to April 28, 2026, with fever and gastrointestinal symptoms reported.
The MV Hondius departed Ushuaia, Argentina, on March 20, heading towards the Canary Islands via Cabo Verde. With a total of 147 individuals aboard—including 19 British nationals—the outbreak appears confined to the vessel itself. Authorities from multiple countries are currently coordinating an international response involving case investigation and medical evacuation.
Maria Van Kerkhove from the WHO stated, “We do believe that there may be some human-to-human transmission that’s happening among the really close contacts.” This concern is echoed by experts like Prof. Emma Thomson, who remarked that incidents like this highlight how zoonotic viruses can emerge in confined settings such as cruise ships.
While hantaviruses are primarily transmitted through contact with infected rodent excreta, saliva, or urine—environmental health controls and rodent control measures are crucial in preventing outbreaks. However, officials remain uncertain about the exact source and mode of exposure for these infections.
As investigations continue into this alarming outbreak, questions linger regarding the potential for ongoing transmission among crew members. The coordinated efforts by health authorities across countries underscore the seriousness of this situation as they work to contain it and ensure passenger safety.