New suspected hantavirus cases in Spain and remote island under investigation

New suspected hantavirus cases in Spain and remote island under investigation
Ships at dock at Granadilla port, where the MV Hondius, carrying nearly 150 people, is expected to arrive within three days, Granadilla de Abona, Spain, 7 May, 2026
Reuters

Health authorities are monitoring a widening hantavirus alert after new suspected cases emerged in Spain and on a remote South Atlantic island, days after an outbreak on a cruise ship left three people dead and several others infected.

The World Health Organization (WHO) confirmed on Friday (9 May) that six of eight suspected cases linked to the Dutch-flagged cruise vessel MV Hondius have tested positive for hantavirus, a rare rodent-borne disease that can be fatal and, in limited circumstances, spread between humans.

Officials said they are now investigating additional suspected infections outside the ship’s direct passenger group, raising concerns about possible secondary transmission linked to international travel.

Health authorities in Spain’s Alicante region are testing a 32-year-old woman who developed symptoms consistent with hantavirus infection after briefly sitting on a flight near a passenger connected to the cruise outbreak.

In a separate case, the UK Health Security Agency said a British man on Tristan da Cunha (one of the world’s most remote inhabited islands) is also suspected of infection after possible exposure linked to the same voyage.

The cases are not yet included in the WHO’s official outbreak count but are being actively investigated by national health agencies.

Cruise ship outbreak

The outbreak began aboard MV Hondius, which was carrying 147 passengers and crew when a cluster of severe respiratory illnesses was first reported during its voyage through Antarctica and the Atlantic.

Three people, a Dutch couple and a German national, have died. Four patients remain hospitalised in the Netherlands, South Africa and Switzerland.

World Health Organization said laboratory analysis indicates the outbreak involves the Andes strain of hantavirus, the only known variant capable of limited human-to-human transmission through prolonged close contact.

Risk of wider spread

Despite concern over new suspected cases, WHO officials said the risk to the general public remains low.

Technical officer Anais Legand said transmission patterns so far do not suggest sustained community spread, noting that infections have largely been confined to close contacts of confirmed cases.

The U.S. Centers for Disease Control and Prevention (CDC) has activated a “level 3” emergency response, indicating a moderate outbreak requiring enhanced coordination but not a global emergency.

Global tracking and quarantine measures

The cruise operator, Oceanwide Expeditions, said no symptomatic passengers remain on board as the ship heads to Tenerife, where health screenings will be conducted before disembarkation.

United States Centers for Disease Control and Prevention said 17 U.S. citizens were aboard and that returning passengers will be flown to Omaha for quarantine at the University of Nebraska under medical supervision.

Health authorities across multiple countries are continuing contact tracing for passengers who disembarked earlier in the voyage, as the investigation into possible secondary transmission continues.

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