A health worker from the veterinarian station vaccinates chicken in a poultry farm in Qinjiang Village of Taizhou City, east China's Jiangsu Province, December 18, 2008. Through a compulsory avian influenza vaccination policy, the vaccination rate reaches 100%.

Health workers from the veterinarian station vaccinate chicken in a poultry farm in Qinjiang Village of Taizhou City, east China's Jiangsu Province, December 18, 2008. Through a compulsory avian influenza vaccination policy, the vaccination rate reaches 100%.