Two Singapore Residents Isolated After Hantavirus Exposure on Cruise Ship

The Communicable Diseases Agency (CDA) of Singapore has isolated two residents who were exposed to hantavirus while traveling on the cruise ship MV Hondius, which has been linked to a multi-country outbreak of severe respiratory illness. Both individuals, a 67-year-old Singaporean and a 65-year-old permanent resident, arrived in Singapore after the ship reported a cluster of hantavirus cases, including three deaths. As of May 7, 2026, their test results for hantavirus are pending, and health officials emphasize that the risk to the general public remains low.

The cruise ship MV Hondius departed from Ushuaia, Argentina, on April 1, 2026, and traveled through ecologically diverse regions, including stops in the South Atlantic and visits to remote islands such as Saint Helena and Ascension Island. By May 4, 2026, a total of seven cases—two laboratory-confirmed and five suspected—had been identified aboard the ship, according to the World Health Organization (WHO). Three passengers have died, one remains critically ill, and three others reported mild symptoms. Illness onset among cases ranged from April 6 to April 28, with symptoms including fever, gastrointestinal distress, and rapid progression to pneumonia and acute respiratory distress syndrome.

The WHO notes that hantavirus infection is typically acquired through contact with the urine, feces, or saliva of infected rodents. While human-to-human transmission is rare, it has been documented in previous outbreaks involving the Andes virus, a specific strain of hantavirus. The WHO currently assesses the global risk from this event as low, but international health authorities are coordinating investigations, case isolation, and medical support.

The two Singapore residents were among passengers who disembarked and later traveled to Singapore. One of them was on the same flight as a confirmed hantavirus case from Saint Helena to Johannesburg, South Africa, on April 25, though that individual did not travel to Singapore. The CDA’s statement underscores that both men remain under observation at the National Centre for Infectious Diseases (NCID), with one experiencing mild symptoms and the other being asymptomatic.

Public health officials are closely monitoring the situation, with the WHO and other agencies emphasizing the importance of continued surveillance and rapid response to limit the spread of the virus. The cruise ship’s itinerary and the diversity of its passenger and crew nationalities have raised concerns about potential further cases in multiple countries. As investigations proceed, health authorities are advising travelers and the public to remain vigilant for symptoms and to seek medical attention if respiratory or gastrointestinal illness occurs after potential exposure.

Hantavirus infection can be severe, with a case fatality rate that varies by strain and can exceed 30% for certain types if untreated. Early diagnosis and supportive care are critical to improving outcomes. The WHO and national health agencies continue to update their risk assessments and recommendations as new information becomes available.

For the general public, the risk of hantavirus infection remains low, but travelers returning from regions with known rodent populations should be aware of symptoms and seek medical advice if they develop fever, muscle aches, or respiratory difficulties within weeks of travel.