Afghanistan will cull poultry after 13 new cases of the deadly H5N1 strain of bird flu were discovered, including some in the capital, a U.N. official said on Thursday. Assadullah Azhari, the U.N. Food and Agriculture Organisation spokesman in Afghanistan, said the latest outbreak comprised six cases of home-raised poultry in the eastern province of Nangarhar, four in Kabul and three in eastern Kunar province. Full Story