WHO confirms two hantavirus cases on cruise ship, five under review

The World Health Organisation has confirmed two cases of hantavirus infection aboard a cruise ship, with five additional cases currently under investigation.

In an update on the situation, the global health body said the infections were detected among passengers and crew linked to the vessel, prompting a public health response and ongoing surveillance.

The suspected cases are being assessed to determine whether they meet the criteria for confirmation, while laboratory testing continues. Health officials are also tracing contacts and monitoring individuals who may have been exposed.

According to the WHO, several of those affected have shown symptoms consistent with hantavirus infection, a disease typically transmitted through contact with infected rodents or their droppings. The agency noted that clinical outcomes can vary, ranging from mild illness to more severe complications.

The organisation reported that some of the cases have resulted in serious illness, though it emphasised that the overall risk to the wider public remains low.

Measures have been introduced on board the ship to limit further spread, including isolation of suspected cases, enhanced sanitation and medical monitoring of passengers and crew.

Hantavirus infections are relatively rare in humans and are not commonly associated with cruise travel. Investigations are ongoing to determine the source of exposure and whether environmental factors on the vessel may have contributed to the outbreak.

The WHO said it is working with relevant national authorities and maritime health agencies to manage the situation and prevent additional cases.