Avian Influenza in Spain
24 September, 2025
Spain has recently lost its official status as “free from avian influenza” following the emergence of several outbreaks across different poultry farms. The most recent detection of highly pathogenic avian influenza virus H5N1 occurred in a large commercial table-egg layer facility near Olmedo, in Valladolid Province, housing approximately 760,000 hens. Immediately adjacent to the farm, on its southern boundary, lies a natural wetland known as Laguna Bodón de Malnombre, which is frequented by wild birds and may represent an additional risk factor for virus introduction or persistence.
This case represents the sixth outbreak confirmed in a commercial poultry farm in Spain in 2025.
