In April 2026, a hantavirus outbreak aboard the MV Hondius left three passengers dead and several others infected. The virus was identified as Andes virus — a South American strain distinct from the Sin Nombre virus common in North America. This page tracks the source-linked signals, route context, and reviewed public records tied to the event.
Official ECDC classification (24 May 2026): 12 total cases, including 10 confirmed, 2 probable, and 3 deaths. One earlier inconclusive record is no longer counted as a case.
Open MV Hondius route on mapThe MV Hondius is a Polar Class 6 expedition cruise vessel operated by Oceanwide Expeditions, based in the Netherlands. Launched in 2019, it carries up to 170 passengers and specializes in Arctic and Antarctic itineraries — including sailings around Svalbard, the Antarctic Peninsula, and the South Atlantic. Its ice-strengthened hull allows access to remote polar regions that conventional cruise ships cannot reach.
In normal operations, hantavirus is not a disease associated with cruise ships or polar voyages. The 2026 MV Hondius outbreak is an anomaly caused by Andes virus, a South American hantavirus strain that differs significantly from the Sin Nombre virus found in North America.
In April 2026, a cluster of hantavirus infections emerged aboard the MV Hondius while the ship was at sea. The outbreak was caused by Andes virus — a South American hantavirus strain distinct from the Sin Nombre virus commonly found in the United States. Three passengers died, and several more were confirmed infected.
The vessel was quarantined off the Cape Verde Islands before eventually docking at Tenerife, where remaining passengers were evacuated and flown home. Andes virus is notable because it is the only known hantavirus with documented person-to-person transmission, though it remains unclear whether that occurred in this outbreak.
Official ECDC classification
MV Hondius Andes hantavirus outbreak, updated 24 May 2026
12
Total
10
Confirmed
2
Probable
0
Suspected
3
Deaths
Red dots indicate source-linked confirmed cases tied to the MV Hondius route or passengers.
Yellow dots mark locations under observation. They do not confirm a diagnosis at that point.
Blue route lines connect voyage points. These are geographic context, not evidence of transmission at each stop.
Hantavirus is almost always a zoonotic disease — humans catch it from infected rodents, not from other people. The typical pathway is inhaling aerosolized particles from rodent excreta in enclosed spaces like cabins, barns, or sheds. Cruise ships, with their climate-controlled interiors and regular pest control, are not natural settings for hantavirus exposure.
The MV Hondius outbreak is unusual because the pathogen was Andes virus, which circulates among the long-tailed colilargo rat (Oligoryzomys longicaudatus) in Chile and Argentina. Andes virus is the only hantavirus strain for which person-to-person transmission has been documented — primarily in Argentine healthcare settings. Whether the MV Hondius cases involved direct human-to-human spread, or whether passengers were independently exposed to rodents at a shared port of call, remains under investigation.
The confined environment of a ship — shared ventilation, close quarters, and limited medical facilities — can amplify the impact of any infectious disease outbreak, regardless of transmission route. This is why even a single confirmed case at sea triggers quarantine protocols and public health monitoring.
Reviewed signals related to the MV Hondius route, shown in chronological order. Each entry includes source context where available.
Canadian passenger from Yukon. PHAC reported National Microbiology Laboratory confirmation of Andes hantavirus on 16 May 2026; public reporting placed the patient in hospital isolation in Victoria, British Columbia, with mild symptoms and a partner who tested negative.
French female passenger. Developed symptoms during repatriation. In ICU in Paris hospital. Status: Serious.
Spanish passenger. Hospitalized in Madrid.
American passenger. Inconclusive test result. Under quarantine in Nebraska. Status: Healthy.
British male passenger. Hospitalized in Tristan da Cunha. Status: Stable.
Swiss male passenger. Experienced symptoms at home after disembarking. Hospitalized in Zurich.
56-year-old British male crew. Evacuated from Cape Verde. Hospitalized in Netherlands.
41-year-old Dutch male crew. Ship's doctor. Evacuated from Cape Verde. Hospitalized in Netherlands.
65-year-old German female passenger. Tested positive post-mortem. Died on board.
69-year-old British male passenger. Hospitalized in ICU in Johannesburg. Status: Improving.
69-year-old Dutch female passenger. Spouse of index case. Died in Johannesburg.
70-year-old Dutch male passenger. First fatality on board MV Hondius.
The interactive map contains source links, marker details, and the full route layer. Open it to inspect each signal with date, status, and source context.
Open MV Hondius Route on MapThis page is for public awareness only. HantavirusMap.life is not an official global or CDC case registry.
Map points may represent public source mentions, not confirmed case totals. A route point does not confirm transmission at that location.
Users should consult health professionals for symptoms or exposure concerns and follow local public health authority guidance.
