A confirmed outbreak of the bird flu strain H5N1 has been reported at a commercial poultry farm in Cornwall, leading to the humane culling of all poultry on the premises. The UK government has established a 3km protection zone and a 10km surveillance zone around the farm to manage the situation. This is the first case of highly pathogenic avian influenza H5N1 reported this season, following an earlier detection of the H5N5 strain in East Riding of Yorkshire.