Bird flu: third premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121)

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in commercial poultry at a third premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121) on 5 December 2025.

• From: Department for Environment, Food & Rural Affairs and Animal and Plant Health Agency
• Published: 5 December 2025

• Disease Type: Bird flu (avian influenza)
• Disease control zone restrictions: In force
• Disease control zone type: Protection zone and Surveillance zone
• Virus strain: H5N1
• Case opened date: 5 December 2025

Case information

5 December 2025

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed at a third large commercial poultry premises near Gainsborough, West Lindsey, Lincolnshire (AIV 2025/121).

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

Declaration

Download the declaration of an avian influenza protection zone and surveillance zone

Further information

Check:

• the updated bird flu disease control zone map

• if you need a licence to move poultry, poultry by-products, eggs, material or mammals

Case number: AIV 2025/121

Published 5 December 2025