摘要
于1987.4～1988.3在安徽颍上HFRS混合型疫源地抽取91名当年发病病人进行病例对照研究。在野外感染因素相近情况下调查室内鼠密度、带毒率及人群隐性感染率,结果表明,病例组上述三指标均大于对照组。另在城关镇幼儿园进行城镇儿童HFRS隐性感染调查,发现与野鼠接触机会极少的城镇儿童中存在HFRS隐性感染。此两项结果均提出了HFRS混合型疫源地中家鼠的传病作用。通过配对分析及Logistic模型多因素分析,对影响家鼠传病作用的因素进行了分析。
A 91 pairs of case-control study was conducted for investigating rats' density, HFRS virus carrier rate and human inapparent infection rate indoor in epidemic area without field exposure. It was found that the three indexes in cases were much higher than these in controls. Another survey on childrens HFRS inapparent infection in town was carried out. The result showed that the children who have less chance exposed to mice have HFRS inapparent infection also. Some other factors which influenced rats' infections role were discussed by analysing with matching method and Logistic model.
关键词
HFRS
鼠带毒率
混合型疫区
鼠密度
Mix epidemic area
Rat density
Virus carrier rate
Inapparent infection
