往昔猖撅为害的一些传染病,虽然大多今日已经基本消失;很多国家的传染病医院已被取消,代之以综合医院的传染病单位(科),但是隔离这项古老的预防措施依然保存,而且内容不断发展,需要有增无减。这是因为:(1)经典的传染病仍有散发,甚至偶可爆发;(2)传染病的范围扩大,目前认识到另一些类型的感染,如病毒性肝炎和各种医院感染同样需要隔离;(3)应用免疫抑制剂 Although most of the epidemics that were rampant in the past have largely disappeared today, the infectious disease hospital in many countries has been canceled and replaced by the infectious disease unit (department) of the General Hospital. However, this ancient precautionary measure of isolation still exists. And the continuous development of content, need to increase. This is because: (1) classical infectious diseases are still circulating and even occasionally exploded; (2) the scope of infectious diseases is widening and currently it is recognized that other types of infections such as viral hepatitis and various nosocomial infections also need to be isolated ; (3) the application of immunosuppressive agents