sinchew1 小时
专家：禽流感病毒有变异迹象 恐引发大流行
今年3月，H5N1禽流感病毒首次在美国各地的乳牛中传播后，各界越来越担心H5N1禽流感病毒， ...
Jefferson Public Radio40 分钟
Oregon commercial dairy farms will start weekly testing for bird flu
Oregon agriculture regulators will test the milk of every commercial dairy across the state weekly, amid rising concerns over bird flu in dairy cattle.