World Health Organization (WHO)联合国世界卫生组织Centers for Disease Control and Prevention (CDC)美国国家疾病控制与预防中心Beijing municipal animal epidemic prevention centre 北京市动物流行病防治中心bird flu / avian flu / avian influenza / fowl plague / 禽流感,又称真性鸡瘟、欧洲鸡瘟outbreak 爆发suspected cases 疑似疫情confirmed cases 诊断疫情test positive 检测为阳性highly pathogenic suspected cases高致病性禽流感疫区poultry farms 家禽农场disease-affected areas 疾病感染地区disposal of animal wastes 动物粪便的处理disinfection 消毒inactive virus 非活性病毒circulate