21 December 2025

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed at a large commercial poultry flock near Market Rasen, West Lindsey, Lincolnshire (AIV 2025/131) on 21 December 2025.

A 3km protection zone and 10km surveillance zone has been declared around the premises. All poultry on the premises will be humanely culled.