Defra updates ASF control strategy

Defra has published an updated African and classical swine fever disease control strategy to strengthen protections for pig farmers and the industry in the event of an outbreak.

The revised strategy introduces a more flexible, risk-based framework designed to control disease effectively without imposing severe restrictions on famers and producers, reflecting the latest scientific and veterinary evidence and aligning with international best practice.

Important changes include the introduction of additional restriction zones (Restricted Zones 1, 2 and 3), which can be deployed depending on the situation. This will help farmers avoid blanket movement restrictions on live pigs and pork products, reducing pressures such as overcrowding and enabling day-to-day operations to continue more smoothly, Defra said.

The strategy, developed jointly with Scottish and Welsh Governments, also strengthens surveillance requirements. Veterinary inspectors will carry out visits to premises within disease control zones to verify compliance, while enhanced testing will support earlier detection of infection. These measures are expected to provide greater confidence in disease freedom, allowing restrictions to be lifted sooner.

Risk-based movement licensing has been expanded to support both welfare and business continuity. Under veterinary oversight, pigs may be moved within zones for welfare reasons or to complete production cycles, helping to prevent overcrowding and maintain appropriate housing conditions.

Better prepared

Biosecurity Minister Baroness Hayman said:  “This updated strategy reflects our commitment to working in partnership with farmers and the wider pig industry to manage disease risks effectively and protect a sector worth over £8 billion.

“These changes will help reduce unnecessary pressures on farmers and producers, maintain high standards of welfare, and ensure we are well prepared to respond quickly and confidently to any outbreak.”

UK Chief Veterinary Officer, Christine Middlemiss, said: “Our updated swine fever disease control strategy will ensure that we are better prepared than ever before to respond swiftly and effectively to a potential outbreak of African and classical swine fevers.

“Enhanced surveillance and flexible movement licensing will help us detect disease earlier and protect our national herd whilst maintain essential farming operations in a biosecure manner. Whilst the disease is not present in Great Britain, we encourage all farmers to maintain strong biosecurity standards and familiarise themselves with the new measures.”

Further updates include:

• A clearer framework for implementing a national movement ban, ensuring restrictions are proportionate and lifted as soon as conditions allow.
• Greater flexibility in meat controls, allowing certain products from restricted zones to remain commercially viable under specific conditions.
• Detailed guidance on cleansing and disinfection procedures, helping producers plan for safe and timely restocking.

The duration of disease control zones has also been revised. For example, the minimum period for protection zones has been reduced to 15 days, down from 30-45, following initial cleansing and disinfection, subject to surveillance outcomes. This is expected to significantly reduce welfare pressures on farms while maintaining robust disease safeguards.

The updated framework also strengthens the UK’s ability to apply regionalisation principles, helping to protect trade by enabling disease-free areas to continue exporting safely during an outbreak.

The current overall risk of entry of ASF virus in live animals and products of animal origin (POAO) in general from affected countries globally, is assessed as MEDIUM (event occurs regularly).  However, the risk of ASF entering the UK, through people bringing POAO to the UK (including meat and other pork products such as dog chews) is assessed as HIGH (event occurs very often).