Avian Influenza Prevention Zones lifted across the UK
The AIPZ was lifted at noon on 4 June 2026.
The UK’s chief veterinary officer has lifted the avian influenza prevention zones (AIPZs) which have been in place across Great Britain.
The measures, which were introduced across the country on 13 December 2024, were lifted at noon on 4 June 2026.
The AIPZs were initially enforced to protect flocks across the country from highly pathogenic avian influenza (HPAI), which had been circulating in wild birds. However, Christine Middlemiss, the UK’s CVO, has now said that the risk of avian influenza to poultry has reduced.
Dr Middlemiss said: “The evidence clearly shows that the risk of avian influenza to poultry across Great Britain has reduced, making this the right time to lift the Prevention Zones.
“This has been possible because of the hard work of all bird keepers, who have upheld high biosecurity standards for many months. It remains vital that keepers remain vigilant and maintain high levels of biosecurity to keep flocks safe. Low risk does not mean no risk.”
The decision followed a risk assessment which, based on epidemiological and scientific evidence, concluded that the risk had reduced in poultry and wild birds.
Although the AIPZs have been lifted, Defra continues to urge bird keepers to maintain scrupulous biosecurity to prevent and stop the spread. Bird keepers should follow good practice to prevent the risk of future outbreaks.
All bird keepers should be:
• cleansing and disinfecting clothing, footwear, equipment and vehicles before and after contact with poultry and captive birds – if practical, use disposable protective clothing
• reducing the movement of people, vehicles or equipment to and from areas where poultry and captive birds are kept, to minimise contamination from manure, slurry and other products, and use effective vermin control
• thoroughly cleansing and disinfecting housing on a continuous basis
• keeping fresh disinfectant at the right concentration at all farm and poultry housing entry and exit points
• minimising direct and indirect contact between poultry and captive birds and wild birds, including making sure all feed and water is not accessible to wild birds
Defra has published biosecurity on its website. Avian influenza remains a notifiable disease – suspected cases should be reported to the Defra Rural Services Helpline: 03000 200 301 (Wales: 0300 303 8268; Scotland: contact your local Field Services Office).
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