一、定义与背景最近十年间国际传染病发生了显著变化,天花已被消灭;由于霍乱病原菌的变迁,事实上已失去了国际传染病的地位;相反,出现了拉萨热等新的重症国际传染病。所谓国际传染病系指本国原来没有,而从国外传入的疾病。根据其临床症状、传染力等预测,一旦侵入将遭致严重后果。这是一组病毒性出血热,其病原感染力强,本国多数人无免疫力,感染者多表现为重症,病死率高,迄今尚无有效的防治措施,处理传染源(病原体)多有明显的危险性。因此日益受到许 I. Definition and Background Significant changes have taken place in the international epidemic in the past decade and the smallpox has been eliminated. As a result of the change in cholera pathogens, the status of an international infectious disease has in fact been lost. On the contrary, new serious international infections such as Lhasa fever have emerged disease. The so-called international epidemic refers to the disease that is not imported from abroad but imported from abroad. According to its clinical symptoms, infectivity and other projections, once invaded will suffer serious consequences. This is a group of viral hemorrhagic fever, the pathogen infection is strong, most of the country’s non-immune system, the infection showed more severe, high mortality, so far no effective prevention and treatment measures to deal with the source of infection (pathogens) and more obvious Dangerous. So increasingly subject to Xu