散发急性肝炎可能是E型肝炎,1988年度防卫医大的学生赴印度旅行时,患了此种肝炎。一、流行病学E型病毒肝炎最初是由Wong等和Khuroo在1980年总结印度的流行病例,于欧美国际杂志介绍的。曾于1957年将1955～1956年印度德里数万人大规模流行的情况汇总,从流行病学、临床、病理等方面,详细地编写成专题论文。E型病毒肝炎的独立性,在学术上已被承认,由于开发了甲型及乙型肝炎的分析系统,而将E型肝炎从急性肝炎中除外。E型病毒肝炎的流行期是固定的,在雨期或洪水后。E型肝炎病毒可经粪便排泄到体外,污染上水道水源和井水,经口传染给人体。流行的规模可从数人到败十万人,多少不等,也有散发的,一旦引起团体暴发流行,猖厥1～2年后,又如潮水般消失,只残留散发病例。不流行时,病毒是否仍保留在团体内尚是个谜。据报告,被E型肝炎病毒污染的国家有印度、巴基斯 Sporadic acute hepatitis may be hepatitis E, the 1988 defensive medical students travel to India, suffering from such hepatitis. First, the epidemiology of hepatitis E virus was first by Wong et al. And Khuroo in 1980, summed up the epidemic in India, introduced in the United States and Europe International Journal. In 1957 1957 to 1956, Delhi, tens of thousands of large-scale epidemic summary of the epidemiology, clinical, pathology and other aspects, prepared in detail monographs. The independence of hepatitis E virus has been admitted academically, with the exception of hepatitis A due to the development of hepatitis A and hepatitis B analysis systems. The prevalence of hepatitis E virus is fixed during the rainy season or after the flood. Hepatitis E virus can be excreted into the body via excrement, pollute the waterway source and well water, and be orally infected to the human body. The scale of the epidemic can drop from a few people to a hundred thousand people, ranging from a few to a hundred. There are also scattered ones. Once a group outbreak is prevalent, a year or two after a devastating event disappears again with the tide of the water and leaves only sporadic cases. It is still a mystery whether the virus remains in the group when it is not popular. It is reported that countries contaminated by hepatitis E virus are India and Pakistan