The Department for the Environment, Food and Rural Affairs said the H5 strain was found in turkeys near Diss on the Norfolk and Suffolk border.

The site also houses ducks and geese and all the birds will be slaughtered.

A 3km protection zone and a 10km surveillance zone are being set up.

Following further test results from the Veterinary Laboratories Agency (VLA) the Acting Chief Veterinary Officer has confirmed that the strain of Avian Influenza present at the Infected Premises near Diss is the highly pathogenic H5N1 strain.

Further characterisation of the virus is in progress, which may give an indication of the origin of the strain.

All birds are being slaughtered at the premises, and Defra said it was consulting on what further measures may be needed.

The latest information about the Suffolk outbreak, together with advice for anyone who keeps poultry can be found on the Defra website at:

* Defra – Avian Influenza
Prompt action is key to controlling avian influenza. If you see dead wild gulls, waders, ducks, geese or swans or groups of dead birds, please report them to the Defra Helpline 08459 33 55 77 and choose the Avian Influenza option which will be open from 8:30am – 8pm, 7 days a week. More information on finding dead birds can be found at:

* Reporting dead birds
How to report dead birds which may have avian influenza.