Bird flu: sixth premises near Thirsk, Thirsk & Malton, Yorkshire (AIV 2025/42)

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in commercial poultry in a sixth premises near Thirsk, Thirsk & Malton, Yorkshire on 5 April 2025.

• From: Department for Environment, Food & Rural Affairs and Animal and Plant Health Agency
• Published: 5 April 2025
• Last updated: 14 May 2025
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  1. 14 May 2025

     Following the successful completion of disease control activities and surveillance within the zone surrounding the sixth premises near Thirsk, Thirsk and Malton, Yorkshire (AIV 2025/42), the 10km surveillance zone has been revoked.

  2. 9 May 2025

     Following the successful completion of disease control activities and surveillance within the zones surrounding the sixth premises near Thirsk, Thirsk & Malton, Yorkshire (AIV 2025/42), the 3km protection zone has ended and the area that formed it becomes part of the 10km surveillance zone surrounding this premises.

  3. 5 April 2025

     First published.

• 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• Disease control zone restrictions: No longer in force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: 5 April 2025
• Case closed date: 14 May 2025

Case information

14 May 2025

Following the successful completion of disease control activities and surveillance within the zone surrounding the sixth premises near Thirsk, Thirsk & Malton, Yorkshire (AIV 2025/42), the 10km surveillance zone has been revoked.

9 May 2025

Following the successful completion of disease control activities and surveillance within the zones surrounding the sixth premises near Thirsk, Thirsk & Malton, Yorkshire (AIV 2025/42), the 3km protection zone has ended and the area that formed it becomes part of the 10km surveillance zone surrounding this premises.

5 April 2025

Highly pathogenic avian influenza (HPAI) H5N1 was confirmed in commercial poultry in a sixth premises near Thirsk, Thirsk & Malton, Yorkshire (AIV 2025/42).

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 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 2025/42