An Indian health worker culls a rooster at a government poultry farm in Lembucharra following a potential threat of the H5 strain of the Avian influenza virus. — Culling began after a fresh outbreak of a potential threat of the H5 strain of the Avian influenza virus on a poultry farm at the Indian Council Research Centre at Lembucharra, about 45km from Agartala. 27th January 2012