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A second Spanish passenger linked to the MV Hondius hantavirus outbreak has tested positive while in quarantine at Madrid’s Gomez Ulla Central Defense Hospital, according to Spain’s Ministry of Health.
The patient remains asymptomatic and has been transferred to the hospital’s High-Level Isolation Unit, where specialized medical teams are monitoring the case under strict biosafety measures. Spanish health officials emphasized that the infection does not pose a risk to the general public because the individual had already been isolated and placed under epidemiological surveillance upon arrival in Spain.
The new diagnosis marks the latest development in the ongoing hantavirus outbreak linked to the expedition cruise ship MV Hondius, which prompted a large-scale public health response involving Spanish authorities and international health agencies.
Second Hantavirus Case Detected During Madrid Quarantine
The infected passenger was among 14 Spanish nationals evacuated from the MV Hondius after concerns emerged about possible hantavirus exposure during the voyage.
The group arrived in Tenerife on May 10 before being transferred to Gomez Ulla hospital in Madrid to complete a mandatory quarantine period under strict medical supervision.
According to the Ministry of Health, the second positive case was identified during routine PCR testing conducted on all quarantined passengers.
Officials said the patient had already been classified as a close contact during the epidemiological investigation launched after the first hantavirus case was confirmed shortly after the group arrived in Spain.
Following confirmation of the infection, the patient was moved to the hospital’s specialized isolation unit for infectious diseases.
Health authorities said the individual currently shows no symptoms associated with hantavirus infection, although doctors will continue close observation because symptoms may appear weeks after exposure.
First Patient Recovering Favorably
The first confirmed hantavirus patient among the Spanish evacuees was diagnosed shortly after arriving in Madrid.
That patient, a 70-year-old man, initially developed mild symptoms consistent with hantavirus infection and was immediately admitted to the same isolation unit.
Spanish health officials now describe his condition as “practically asymptomatic,” suggesting a favorable recovery.
The remaining 12 passengers continue to test negative in regular PCR screenings, according to the Ministry of Health.
What Is Hantavirus?
Hantavirus is a group of viruses primarily transmitted to humans through exposure to rodents or contact with their saliva, urine, or droppings.
In rare cases, some strains may spread between humans, although person-to-person transmission remains uncommon and is generally associated with variants identified in South America.
The virus can cause severe illnesses, including hantavirus pulmonary syndrome, a potentially life-threatening respiratory disease characterized by:
- Fever
- Muscle pain
- Fatigue
- Breathing difficulties
According to the World Health Organization, the incubation period for hantavirus can range from one to six weeks, which explains why Spanish authorities continue enforcing extended quarantine and monitoring measures.
The exact source of exposure aboard the MV Hondius has not been publicly detailed. However, international health authorities have coordinated contact tracing efforts since the outbreak was identified.
Spain Maintains Strict Quarantine Measures
Monday marked the 15th day of quarantine for the passengers isolated at Gomez Ulla hospital.
Under current health protocols, individuals who continue testing negative may complete hospital isolation after 28 days, allowing them to leave the facility on June 7 if no additional infections are detected.
However, passengers will still be required to continue isolation at home until the full 42-day monitoring period ends.
During home monitoring, individuals must:
- Conduct daily temperature checks
- Report any symptoms immediately
- Follow strict isolation guidance
Last week, the Ministry of Health slightly relaxed some quarantine restrictions because most passengers remained symptom-free.
Passengers were permitted to:
- Receive visitors
- Access shared areas within the hospital ward
However, strict protective measures remain in force.
Officials said the second positive case has not changed the overall quarantine strategy, although the situation continues to be reviewed daily.
Additional Hantavirus Monitoring Cases in Spain
Spanish health authorities are also monitoring two women identified as close contacts of a Dutch woman who died after contracting hantavirus.
One of the women, a 32-year-old in Alicante, has now tested negative five consecutive times.
She was initially admitted to San Juan Hospital after possible exposure during an international flight linked to the Dutch patient.
Because she remains symptom-free, authorities allowed her to continue quarantine at home under strict precautions.
According to health protocols:
- She must remain isolated in a ventilated room
- Household members must wear FFP2 masks
- Strict hand hygiene measures must be maintained
Meanwhile, another woman under observation in Barcelona has also remained asymptomatic and tested negative in three consecutive PCR tests.
Catalonia’s regional health department confirmed she will continue home isolation for an additional 14 days while epidemiological monitoring continues.
Spanish Authorities Reassure the Public
Spanish officials continue emphasizing that the current hantavirus cases do not represent a threat to the wider population because all potentially exposed individuals were identified quickly and isolated promptly.
Experts say the response demonstrates lessons learned from previous infectious disease emergencies, with close coordination between hospitals, epidemiologists, and regional health authorities helping contain transmission risks.
The Gomez Ulla hospital, operated by Spain’s Ministry of Defense, houses one of the country’s most specialized high-level isolation units and has previously managed patients with other highly infectious diseases.
For now, authorities remain focused on:
- Completing the quarantine process
- Continuing regular PCR testing
- Monitoring for additional symptoms
- Preventing further transmission
While concern surrounding the outbreak remains high, Spanish officials insist the situation remains under control and that public health protocols are functioning as intended.
Frequently Asked Questions About the MV Hondius Hantavirus Cases
What is hantavirus?
Hantavirus is a virus primarily transmitted to humans through contact with infected rodents, their saliva, urine, or droppings. In severe cases, it can cause serious respiratory or kidney-related illnesses.
How did the MV Hondius hantavirus outbreak begin?
Health authorities believe passengers may have been exposed to hantavirus during the MV Hondius expedition cruise. The exact source of exposure has not been publicly confirmed.
How many Spanish passengers tested positive for hantavirus?
So far, two Spanish passengers evacuated from the MV Hondius cruise ship have tested positive for hantavirus while under quarantine in Madrid.
Where are the infected passengers being treated?
The infected passengers are being treated at the High-Level Isolation Unit at Gomez Ulla Central Defense Hospital in Madrid, one of Spain’s specialized facilities for infectious diseases.
Are the hantavirus patients showing symptoms?
The second confirmed patient is currently asymptomatic, while the first patient reportedly experienced mild symptoms and is now recovering favorably.
Is there a risk to the general public in Spain?
Spanish health officials say the current cases do not pose a risk to the general public because all potentially exposed individuals were identified early and placed in isolation.
How long is the hantavirus quarantine period in Spain?
Passengers linked to the outbreak must complete a 42-day monitoring period, including hospital quarantine followed by home isolation if they continue testing negative.
What are the symptoms of hantavirus?
Common hantavirus symptoms may include:
- Fever
- Muscle pain
- Fatigue
- Headache
- Breathing difficulties
Symptoms can appear between one and six weeks after exposure.
Can hantavirus spread between humans?
Human-to-human transmission is considered very rare and is typically associated with certain hantavirus strains identified in South America.
What is hantavirus pulmonary syndrome?
Hantavirus pulmonary syndrome is a rare but potentially life-threatening respiratory disease caused by hantavirus infection. Severe cases can lead to breathing failure and require intensive medical treatment.
Why are passengers quarantined for so long?
According to the World Health Organization, hantavirus can have an incubation period of up to six weeks. Spanish authorities extended monitoring measures to ensure any new cases are detected quickly.
What is the latest update on the MV Hondius outbreak?
Spanish authorities confirmed a second hantavirus case among quarantined passengers in Madrid. The remaining passengers continue testing negative, and health officials say containment measures remain effective.
Information Source:
https://www.elmundo.es/ciencia-y-salud/salud/
Photo Attribution:
MV Hondius, by Fdesroches Creative Commons Attribution-Share Alike 4.0 International license. Wikimedia Commons https://w.wiki/MmM9
“Checking Blood Sample” by US Army Africa, available on Wikimedia Commons, licensed under CC BY 2.0.
