每日雅思词汇：禽流感　　avian influenza/bird flu禽流感; 　　AIV禽流感遥; 　　poultry家禽; 　　epidemic/infectious disease/contagious disease遥病; 　　outbreak疾病的突然发生或蔓延; 　　control efforts防控措施; 　　disease surveillance疾病监测; 　　suspected cases疑似病例