A case of the highly pathogenic avian influenza (HPAI) H5N1 virus, otherwise known as bird flu, has been detected in England, according to the Department for Environment, Food and Rural Affairs (Defra).

The case, confirmed on Friday (July 25) in Bishop Auckland Co. Durham, has triggered a 3km protection zone and a 10km surveillance zone around the property.

The government confirmed that any affected animals on the property will be humanely culled.

Defra also announced that the case is related to captive birds rather than a commercial setup.

It follows the lifting of restrictions on July 21 in the area after a period of successful disease control activities regarding a case of bird flu confirmed on June 17.

This is the first confirmed case of the disease in July, with the last confirmed case in England being announced on June 20, while Wales confirmed a case on June 24.

Bird flu prevention

Defra advised bird owners to keep up-to-date with the virus and monitor the interactive bird flu map on the department’s website.

The virus, which affects poultry and wild birds, spreads through contaminated feed and water, or through birds’ droppings and saliva.

Infected birds show signs including sudden death; a swollen head; closed and runny eyes; lack of coordination; tremors; dropping of the wings; dragging legs; breathing difficulties; fever; and significant reduction in egg production, as well as other discrete signs.

The government is also reminding people to register as keeper of birds within 30 days of taking on poultry or other captive birds, in accordance with the law.

Poultry should be kept away from wild birds, standing water or ponds should be fenced off; rodents and pests controlled; and housing cleaned and disinfected,

Poultry producers are also advised to use clean clothing and footwear, have footbaths available on farm; and limit and control access to the birds.

Defra has also reminded farmers that bird flu is a notifiable disease in poultry and any suspected cases on a farm you should be reported in accordance with the law.