Two further bird flu cases confirmed at poultry sites in Norfolk

Protection and surveillance zones are in place after the latest H5N1 discovery

Author: Callum McIntyrePublished 21st Dec 2025

Two new cases of highly pathogenic avian influenza H5N1 have been confirmed at large commercial poultry sites near Dereham in Breckland, Norfolk.

The Department for Environment, Food and Rural Affairs (Defra) confirmed the latest case on 20th December. Both sites will see all poultry humanely culled as part of ongoing containment measures.

In line with previous cases, Defra has implemented a 3km (1.9-mile) protection zone and a 10km (6-mile) surveillance zone around the affected premises.

The newly confirmed infections bring the total number of bird flu cases in Norfolk to 12 since October, and 21 across the East of England.

Defra reminds poultry businesses and bird owners in the area to remain vigilant, adhere to the restrictions within the declared zones, and report any signs of avian influenza.

What is H5N1 bird flu?

Highly pathogenic avian influenza, commonly known as bird flu, spreads through contact with infected birds, either domestic or wild. The H5N1 strain is a form of the virus that can cause significant disease in birds, with serious implications for agriculture.

To prevent further spread, protective measures including restrictions on animal movement and thorough cleaning and disinfection of the affected premises are being carried out.

The public is being urged not to touch sick or dead birds and to report sightings to the DEFRA helpline: 03459 33 55 77.