Bird flu: third premises near Dereham, Breckland, Norfolk (AIV 2025/132)

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in commercial poultry at a third premises near Dereham, Breckland, Norfolk on 22 December 2025.

• From: Department for Environment, Food & Rural Affairs and Animal and Plant Health Agency
• Published: 22 December 2025
• Last updated: 22 February 2026 — See all updates

• Disease Type: Bird flu (avian influenza)
• Disease control zone restrictions: No longer in force
• Disease control zone type: None
• Virus strain: H5N1
• Case opened date: 22 December 2025
• Case closed date: 22 February 2026

Case information

22 February 2026

Following successful completion of disease control activities and surveillance in the zone around a third premises near Dereham, Breckland, Norfolk, the 3km protection zone has ended and the surveillance zone has been revoked.

22 December 2025

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in a large commercial poultry unit at a third premises near Dereham, Breckland, Norfolk.

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

Download the declaration of the ending of a protection zone and revocation of a surveillance zone (PDF)

This revokes the declaration of an avian influenza protection zone and surveillance zone (PDF).

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 2025/132

Published 22 December 2025

Last updated 22 February 2026 + show all updates

1. 22 February 2026

   Following successful completion of disease control activities and surveillance in the zone around a third premises near Dereham, Breckland, Norfolk, the 3km protection zone has ended and the surveillance zone has been revoked.

2. 22 December 2025

   First published.