Mito, Ibaraki Pref., Dec. 25 (Jiji Press)--The Ibaraki prefectural government said Thursday that it has confirmed an outbreak of highly pathogenic avian influenza at a poultry farm, the first such case in the eastern Japan prefecture this season. The outbreak in the farm in Shirosato will lead to the culling of about 970,000 egg-laying chickens, the largest such action in the country this se...