Abstract: In April 1987 and March, 1988, an epidemiological investigation was conducted in a county in Anhui Province. We found the inapparent infection rate in HFRS mixed epidemic focus is 4.82%, just between the mice and rat epidenic focus. And no sexual difference. There is inapparent infection in every age group, and there is more common in 20—50 years old group. There is a raising tendency of inapparent in fection after anepidemic year. We also found that the value of HFRS inapparent infection rate is correspoal with that of incidence rate and population inapparent infection whose family has HFRS patient is higher than that of pupulation whose family has no HFRS patient.

摘要： 于1987年4月和l988年3月,在安徽某县进行了HFRS隐性感染调查,发现混合型疫源地的隐性感染率为4.82%,介于野鼠型和家鼠型病源地之间,同时发现,HFRS隐性感染男、女间无性别差异;各年龄组均有隐性感染,但以20～50岁组为高;经过一个流行年度后,隐性感染似有上升趋势,且发现发病率的高低与该地人群隐性感染率高低相一致;家中有患者的正常人群隐性感染率高于家中无患者的人群。

关键词: 肾综合征出血热, 混合型疫区人群, 感染特征