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由病毒感染而引起的脑实质炎症称为病毒性脑炎。目前对病毒性脑炎的分类方法不统一根据其流行情况的不同分为两类:急性流行性脑炎:为虫媒病毒性脑炎,如流行性乙型脑炎(由蚊虫传播),森林脑炎(由蜱传播)等,均属传染病范围,本文不予叙述。急性散发性脑炎:是指不经虫媒传播的原发性病毒脑炎,本文主要介绍此类脑炎急性散发性病毒性脑炎病因:疱疹病毒包括单纯性疱疹病毒(尤其是Ⅰ型单纯疱疹病毒引起的约占病毒性脑炎的10%)、带状疱疹病毒、E B 病毒、B 病毒巨细胞病毒。流行性腮腺炎病毒(流行性腮腺炎合并脑炎者约占26～40%),流
The parenchymal inflammation of the brain caused by a virus infection is called viral encephalitis. The current classification of viral encephalitis is not uniform according to their prevalence is divided into two categories: Acute encephalitis: Arbovirus encephalitis, such as Japanese encephalitis (mosquito-borne), the forest Encephalitis (transmitted by ticks), etc., are infectious diseases, this article will not be described. Acute encephalitis: refers to the primary virus encephalitis transmitted by insect-free vector, this article describes the etiology of acute encephalic virus encephalitis: herpes simplex virus, including herpes simplex virus (especially type I simple Herpes virus causes about 10% of viral encephalitis), herpes zoster virus, Epstein-Barr virus, B virus cytomegalovirus. Mumps virus (mumps and encephalitis accounted for about 26 to 40%), flow