日本脑炎(Japanese encephalitis,JE)在我国又称为流行性乙型脑炎(简称乙脑),是由日本脑炎病毒(JEV)引起的急性中枢神经系统传染病,临床以高热、惊厥、意识障碍及脑膜刺激征为主,病死率可达10%,幸存者约15%有后遗症。2010年我国卫生部公布的甲乙类法定报告传染病发病数及死亡数排序中,乙脑分别位于第15位和第7位[1],严重威胁着人民生命健康。近年来日本脑炎的流行地域有不断扩大的趋势,如日本、韩 Japanese encephalitis (JE), also known as Japanese encephalitis (JE) in our country, is an acute central nervous system infectious disease caused by Japanese encephalitis virus (JEV) .Hepatic fever, convulsions, Awareness disorders and meningeal irritation-based, case fatality rate of up to 10%, about 15% of survivors have sequelae. In 2010, China’s Ministry of Health announced the statutory reporting of Class A and B infectious diseases incidence and the number of deaths, JE were located in the first 15 and 7, [1], a serious threat to people’s lives and health. In recent years, endemic areas of Japanese encephalitis have been expanding, such as Japan and South Korea