What we know about the cruise ship hantavirus

This episode of ABC News Daily investigates the hantavirus outbreak linked to the MV Hondias cruise ship, which sailed across the South Atlantic in April 2026. Three passengers—two from the Netherlands and one from Germany—died after being exposed to the Andes variant of hantavirus, believed to have been contracted in Argentina. The virus, which spreads through rodent excreta and can transmit between humans via respiratory aerosols, caused severe pneumonia and cardiac complications, with a mortality rate of 30% to 50%. Despite initial missteps by the cruise ship’s captain in downplaying the death as non-infectious, international health authorities have since coordinated a repatriation effort, with 90 passengers still on board as of May 2nd. Four Australians and one New Zealander are being quarantined in Western Australia for three weeks, with potential isolation extending to 42 days, reflecting Australia’s stringent public health protocols. While the outbreak is unlikely to become a global pandemic due to its long incubation period and limited asymptomatic transmission, experts warn that public distrust, misinformation, and vaccine hesitancy—exacerbated by the post-COVID climate—pose a greater threat to future pandemic preparedness than the virus itself.