Bird flu: near Dereham, Breckland, Norfolk (AIV2025/124)

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in commercial poultry near Dereham, Breckland, Norfolk on 8 December 2025.

• From: Department for Environment, Food & Rural Affairs and Animal and Plant Health Agency
• Published: 8 December 2025
• Last updated: 24 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• Disease control zone restrictions: No longer in force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: 8 December 2025
• Case closed date: 24 February 2026

Case information

24 February 2026

Following successful completion of disease control activities and surveillance in the zone around a premises near Dereham, Breckland, Norfolk (AIV 2025/124) 10km surveillance zone has been revoked.

10 February 2026

Following successful completion of disease control activities and surveillance in the zone around a premises near Dereham, Breckland, Norfolk (AIV 2025/124) the 3km protection zone has ended and the area that formed it becomes part of the surveillance zone.

All poultry on the premises have been humanely culled.

8 December 2025

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in a large commercial poultry flock near Dereham, Breckland, Norfolk on 8 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.

Declarations

Download the declaration of the revocation of a surveillance zone (PDF)

This revokes and replaces: the declaration of the ending of a protection zone

This revokes and replaces: 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 2025/124

Published 8 December 2025

Last updated 24 February 2026 + show all updates

1. 24 February 2026

   Following successful completion of disease control activities and surveillance in the zone around a premises near Dereham, Breckland, Norfolk (AIV 2025/124) 10km surveillance zone has been revoked.

2. 10 February 2026

   Following successful completion of disease control activities and surveillance around a premises near Dereham, Breckland, Norfolk (AIV 2025/124) the 3km protection zone has ended and the area that formed it becomes part of the surveillance zone.

3. 8 December 2025

   First published.