A hantavirus outbreak linked to the Dutch cruise ship MV Hondius has triggered coordinated public health responses across the globe, after the vessel docked at Granadilla port in southeast Tenerife to disembark all remaining passengers and crew over the weekend. Three people who had traveled on the ship have died, with two of the deaths confirmed to be caused by the virus, and the World Health Organization (WHO) has logged a total of nine cases: seven confirmed and two suspected.
As dozens of international passengers make their way back to their home countries, public health agencies around the world have rolled out targeted quarantine and monitoring protocols to prevent wider community spread of the Andes strain of hantavirus, which is primarily endemic to Argentina and Chile. Investigations remain ongoing into the origin of the outbreak, with the leading hypothesis tying initial exposure to rodent habitats in Argentina, where the cruise began its itinerary after passengers completed a bird-watching trip through Argentina, Chile, and Uruguay. No official confirmation of this origin story has been released to date.
In the United Kingdom, 20 British nationals, one German resident of the UK, and one Japanese passenger were flown to Manchester Airport on a chartered evacuation flight Sunday, then transferred to Arrowe Park Hospital in Merseyside for 72 hours of mandatory testing and medical assessment. Following this initial monitoring period, the group will return to their homes to complete a 42-day precautionary self-isolation period. UK Health Security Agency officials confirmed that strict infection control measures were enforced throughout the entire repatriation journey. Public Health Minister Sharon Hodgson noted that none of the repatriated passengers have shown any symptoms of the virus, adding that the overall risk to the UK public remains extremely low thanks to stringent monitoring and isolation protocols. In total, 31 British nationals, including both passengers and crew, were on board the MV Hondius, and some disembarked before the first confirmed hantavirus case was reported on May 4.
United States health officials have echoed the UK’s assessment that the broader public risk remains minimal. Eighteen American passengers have returned to the U.S. so far: 16 are currently undergoing screening at the University of Nebraska Medical Center in Omaha, while two are being cared for at Emory University’s Regional Emerging Special Pathogen Treatment Center in Atlanta, including one patient with mild symptoms who was transported in a specialized biocontainment unit on the repatriation flight. Four California residents with potential exposure are also being monitored: three were passengers on the cruise ship, and one may have been exposed on an international flight. The California Department of Public Health confirmed Monday that the risk to California residents remains extremely low. Per Centers for Disease Control and Prevention guidance, all returning exposed Americans will undergo multi-day health assessments, followed by a 42-day self-isolation and monitoring period that requires daily temperature checks, with individual care plans adjusted based on each patient’s health status and living situation.
The European Union, via the European Centre for Disease Prevention and Control, has issued guidance aligned with the UK’s protocols: all returning citizens must undergo medical triage by trained healthcare workers, followed by a six-week self-isolation and symptom monitoring period, with instructions to seek immediate care if symptoms develop. In the Netherlands, 13 Dutch nationals (eight passengers and five crew members) who were on board when the ship docked were flown to Eindhoven Sunday, then transported directly to their homes for quarantine. Dutch health officials will conduct daily check-ins with all isolating individuals to catch any early symptoms and provide prompt care if needed.
Fourteen Spanish nationals repatriated from Tenerife to Madrid are currently in mandatory quarantine at a military hospital in the capital. Spanish Health Minister Mónica García confirmed Monday that one person has received a preliminary positive test result, but remains asymptomatic, in isolation, and in good general health. The other 13 have tested negative preliminarily, with definitive results expected within 24 hours. While Tenerife and Canary Islands residents have expressed public concern over the outbreak being centered in their port community, WHO officials have emphasized that the risk of widespread local transmission is low due to the specific transmission characteristics of hantavirus, and all disembarkation processes were carried out at a port located far from residential areas.
France has recorded its first confirmed hantavirus case linked to the outbreak: a French national who developed symptoms during a chartered repatriation flight from Tenerife to Paris. French Health Minister Stéphanie Rist reported that the woman is currently isolating in Paris, and her health is deteriorating. Health officials have already traced 22 close contacts of the patient, and all five French citizens returning from Tenerife were placed in immediate strict isolation per Prime Minister Sébastien Lecornu’s weekend order.
In Germany, four asymptomatic exposed people arrived in the country overnight Monday and were initially monitored in an isolation unit at Frankfurt University Hospital, before being transferred to their home jurisdictions across Berlin, Baden-Wuerttemberg, Bavaria, and Schleswig-Holstein. Germany’s federal health ministry stated that the group will remain under continuous close symptom monitoring, with local authorities responsible for determining any additional local public health measures.
Six Canadian citizens were on board the MV Hondius: four returned to British Columbia Sunday on a chartered repatriation flight, and are currently self-isolating for a precautionary 21 days, a period that may be extended to 42 days to align with the virus’s 1 to 8 week incubation period. Two other Canadian passengers, a couple in Ontario, are already self-isolating at home with no reported symptoms, according to Canadian Health Minister Sylvia Jones.
A Swiss national who disembarked the cruise at Saint Helena before returning home has tested positive for hantavirus and is currently receiving medical care. His wife, who traveled with him, remains asymptomatic and is self-isolating as a precaution. Switzerland’s Federal Office of Public Health has confirmed that the overall risk to the Swiss public remains low. Thirty-eight Filipino crew members are on the MV Hondius, and the Philippines has no recorded cases of hantavirus, with local officials stating that the risk of an outbreak there remains extremely low.