Bird flu: a second premises near Swaffham, Breckland, Norfolk (AIV 2025/109)

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in a second large commercial poultry premises near Swaffham, Breckland, Norfolk on 23 November 2025.

• From: Department for Environment, Food & Rural Affairs and Animal and Plant Health Agency
• Published: 23 November 2025
• Last updated: 8 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• Disease control zone restrictions: No longer in force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: 23 November 2025
• Case closed date: 8 February 2026

Case information

8 February 2026

Following successful completion of disease control activity and surveillance in the zone surrounding a second premises near Swaffham, Breckland, Norfolk (AIV 2025/109), the surveillance zone surrounding this premises has been revoked.

21 January 2026

Following successful completion of disease control activities and surveillance in the zone around a second premises near Swaffham, Breckland, Norfolk (AIV 2025/109), 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.

23 November 2025

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in a second large commercial poultry premises near Swaffham, 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.

Declarations

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

This revokes the declaration of the ending of a protection zone (PDF).

This revokes and replaces the declaration of a 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 2025/109

Published 23 November 2025

Last updated 8 February 2026 + show all updates

1. 8 February 2026

   Following successful completion of disease control activity and surveillance in the zone surrounding a second premises near Swaffham, Breckland, Norfolk (AIV 2025/109), the surveillance zone surrounding this premises has been revoked.

2. 21 January 2026

   Following successful completion of disease control activities and surveillance in the zone around a second premises near Swaffham, Breckland, Norfolk (AIV 2025/109), 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.

3. 23 November 2025

   First published.