Overview

• Madrid authorities confirmed highly pathogenic avian influenza H5N1 at an egg farm in Valdemoro housing about 450,000 hens after testing by the national reference laboratory.
• Protection and surveillance zones of 3 and 10 kilometers were established around the Valdemoro site with tightened biosecurity, movement controls and bans on certain outdoor poultry practices.
• Castilla y León declared two additional H5N1 outbreaks in Aguasal and Olmedo that officials classify as secondary and epidemiologically linked to a case first reported in Olmedo on September 19.
• The two Valladolid holdings include roughly 14,000 free‑range hens and 88,000 layers, both immobilized with official sampling completed and culling, cleaning and disinfection ordered under EU rules.
• Authorities report nine poultry outbreaks nationwide this year, about 40 events in wild birds and two in captive birds, and they are monitoring exposed workers with symptom checks and PCR screening.