Hantavirus Global Situational Briefing — June 10, 2026

Cluster: 13 cases, 3 deaths. Day 15 without a new infection. MV Hondius returns to service in three days.

France's quarantine under legal challenge

The clearest development of the past 24 hours is not a new case. It is a courtroom filing.

Julia and Roland Seitre — retired veterinarians and wildlife photographers who were among the five French nationals aboard MV Hondius — have been confined at Hôpital Bichat in Paris since May 10, a month now. They are not ill. Every PCR and antibody test they have received, twice a week, has come back negative. Yet they remain in a 20 to 25 m² negative-pressure room with sealed windows, on the grounds that France's mandatory hospital isolation protocol applies to close contacts regardless of test results.1

On June 8, the couple spoke to France 2's 8 o'clock evening broadcast — their first public interview in a month. Roland Seitre, whose birthday fell on June 9, put it plainly to France Inter: "It's my anniversary today. I would have preferred to spend it somewhere other than in a room." His wife Julia described the psychological weight: "There's a real impact on the body and the psyche. Birthdays pass, weddings you miss — and above all, a feeling of inequality. Why us? Why not the others?" Roland pressed the comparison: "The British, the Dutch, the Belgians and the Germans have been confined at home from the start. Why is it different for the French? What is the medical difference?"2

Cargando tarjeta de contenido…

On the same day they spoke out publicly, the Seitres announced they are filing with the juge des libertés et de la détention — a civil liberties judge — in an effort to complete their quarantine at home. They had written to the Ministry of Health twice without a response. They are released under the current protocol on June 21.2

The legal challenge poses a direct question about the proportionality of France's confinement protocol. Other countries with confirmed contacts — the UK, the Netherlands, Germany — permitted home isolation for asymptomatic individuals with negative tests from the outset. Spain revised its own quarantine framework on May 22, allowing the final 14 days at home. Whether a French civil liberties judge concurs, and on what timeline, will be closely watched.3

As for the confirmed French case — the 65-year-old woman on ECMO at Bichat — there has been no public update in 13 days. The last confirmed status was "no further deterioration" as of May 28. Day 34 on ECMO as of today.

Nebraska: 8 of 18 now home, first wave of early-departure travelers cleared

Three more MV Hondius passengers left the National Quarantine Unit at the University of Nebraska Medical Center on June 9, returning to their home states for the final two weeks of monitoring.4 With those departures, eight of the original 18 repatriated Americans have left the Omaha facility; ten remain.5 Transport was coordinated by the Administration for Strategic Preparedness and Response (ASPR) alongside state and local health departments. All passengers traveled via non-commercial means with appropriate biocontainment measures; they continue monitoring under state-level oversight for two more weeks.

The CDC's situation page, updated on June 9, also confirmed a formal closure for a separate cohort: the small number of Americans who disembarked from MV Hondius before the outbreak was identified and returned to the United States independently have now completed their 42-day monitoring period, which ended June 6. No cases were detected among them. CDC states no further public health follow-up is required for this group.5 This marks the first cohort to reach a formal, clean endpoint in the US response.

The June 22 monitoring endpoint for the main NQU cohort (May 11 arrival) is now 12 days away. Jake Rosmarin, who committed to staying the full 42 days, remains at the facility. Oregon's Dr. Stephen Kornfeld continues home monitoring through June 21.

MV Hondius photographed in Magdalenefjord, Svalbard, June 2025. The vessel departs Rotterdam for its first post-outbreak voyage on June 13. — MV Hondius photographed in Magdalenefjord, Svalbard, June 2025 6

Spain: Case 2 status unchanged, contacts in final home isolation stretch

Spain's second confirmed case remains at the UATAN high-level isolation unit, with a persistent low-grade fever (febrícula) and no signs of clinical deterioration. The discharge criteria — three consecutive symptom-free days plus two negative PCR results — have not yet been met. Spain's Ministry of Health has not issued an update in the past 24 hours.7

The 12 asymptomatic contacts who cleared Gómez Ulla on June 7 are now in their third day of home isolation, which runs through approximately June 21. Discharge criteria for contacts: negative PCR plus asymptomatic status. Spain's first confirmed case (70-year-old) was discharged around June 4–5 and is under a six-month medical follow-up program.

MV Hondius: three days to Svalbard restart

The vessel is in transit toward Longyearbyen, Svalbard, on schedule for its June 13 commercial restart — the first post-outbreak Svalbard voyage.8 GGD Rotterdam-Rijnmond cleared the vessel on May 30 after final inspection. The 25 crew and 2 RIVM medical staff who remained aboard during Rotterdam decontamination have all tested PCR-negative throughout. The ship's June 13 restart would represent the first operational confirmation that expedition cruise operators can recover from a hantavirus cluster under the current international quarantine and decontamination framework.

Argentina: Malargüe survey reaches Day 3

The joint ANLIS Malbrán–US CDC rodent trapping mission in Malargüe, Mendoza Province, is now in its third of five scheduled days (June 8–12).9 Teams are trapping rodents and collecting blood samples for analysis at Malbrán's Buenos Aires laboratory; results are expected within approximately one month from June 8, around July 8. The Malargüe site was chosen on both ecological criteria and the confirmed travel history: the Dutch couple who died had traveled through the Mendoza wine region before boarding the vessel.

The more than 100 rodents trapped around Ushuaia and in Tierra del Fuego National Park in May remain under analysis. Malbrán head Claudia Perandones has noted Tierra del Fuego has recorded no hantavirus in 30 years of mandatory reporting.9 Argentina's 2026 national case count stands at 47 confirmed cases (epidemiological week 20), unrelated to the MV Hondius cluster.

Preparedness response: LFCM-CoP webinar today

Today, June 10, the Georgetown Global Health Nigeria-affiliated LFCM-CoP (Lessons from Crisis Management – Community of Practice) is holding a webinar drawing comparisons between the 2014 Ebola outbreak and the current hantavirus threat, at 10:00 AM GMT+1. The session was announced as examining what preparedness lessons from Ebola apply to emerging threats like hantavirus.10 A separate briefing from the Kentucky Medical Association on June 9 cited hantavirus as one of the active topics in its state healthcare update, alongside Ebola and respiratory disease.11