流行性出血热是由一种病毒引起,主要由节肢动物传播,临床上以发热、出血、伴有或不伴有肾脏损害为主征的急性传染性疾病。本病也是一种自然疫源性疾病,嚙齿类动物(如黑线姬鼠、米氏田鼠)常是传染源。本病由于病因未完全阐明,以致分类命名十分复杂。有的作者按流行地区分为远东出血热、鄂木斯克出血热,及菲律宾出血热等。有的按传播媒介分为经螨传播出血热,经蜱(壁虱)传播出血热,及经蚊传播出血热。有的则根据其临床症状而分为伴有肾脏症状群 Epidemic haemorrhagic fever is caused by a virus, mainly transmitted by arthropods, clinically with fever, bleeding, with or without renal damage mainly characterized by acute infectious diseases. The disease is also a natural foci of disease, rodents (such as Apodemus agrarius, Microtus brandti) is often the source of infection. The disease is not fully elucidated because of the etiology, resulting in a very complicated classification. Some authors are divided by epidemic areas into Far Eastern hemorrhagic fever, Omsk hemorrhagic fever, and Philippine haemorrhagic fever. Some are classified by the mass media as hemorrhagic fever transmitted by mites, hemorrhagic fever transmitted by ticks (ticks), and haemorrhagic fever transmitted by mosquitoes. Some are classified according to their clinical symptoms associated with renal symptoms