The detection of a hantavirus outbreak on an Atlantic cruise ship has once again highlighted this uncommon but potentially serious virus. Despite its exceptional nature, Catalonia already experienced a recent autochthonous case: a patient from the Berguedà region diagnosed in 2024, representing the only confirmed case in recent years.

The initial evolution of the case in Berguedà was concerning. In early October, the man, a resident of a rural area, was hospitalized and admitted to the intensive care unit (ICU). After collecting samples to identify the causative agent, the National Center for Microbiology confirmed a positive diagnosis for hantavirus in early November. Health authorities activated surveillance and control protocols, and ultimately, the patient was discharged with a satisfactory recovery.

This local episode contrasts with the more recent and severe outbreak detected on the international cruise ship MV Hondius. This vessel, sailing the Atlantic with 147 people of 23 nationalities, has reported three deaths and at least seven possible infections, including one patient in critical condition. Five of the passengers are Catalan, but according to the Public Health Agency of Catalonia, none of them show symptoms and are in good health.

Hantavirus pulmonary syndrome is an infrequent but serious illness, primarily transmitted to humans through contact with urine, feces, and saliva from infected rodents, especially by inhaling contaminated air. It is important to note that the infection is not transmitted from person to person. This disease sporadically affects individuals residing in rural and wooded areas, as was the case with the patient in Berguedà.

Symptoms typically appear between one and six weeks after exposure to the virus. Initially, they include fever, general malaise, muscle aches, abdominal pain, headache, nausea, and vomiting. Subsequently, the infection can progress, leading to coughing and respiratory distress.