河南省正常人群甲型肝炎病毒感染水平调查及催化模型分析

The Study on Infection Level of Hepatitis A Virus and Analysis of Simple Catalytic Model in Normal Population of Henan Province

对河南省７个市、县２９９１例正常人群进行了抗甲型肝炎病毒（ＨＡＶ）血清流行病学调查，抗－ＨＡＶ阳性率为６８．６４％。并用简单催化模型对此阳性率进行拟会，各地感染力有差别，７个市、县的平均感染力ｒ为０．２４２５，拟合结果良好（Ｘ２＝７．１８ｐ＞０．７）。简单催化模型可用于甲肝感染的流行病学分析研究。

Seroepidemiological investigation on anti-HAV was carried out in a population of 2991 in seven cities and counties of Henan province. The infection rate of HAV was 68.64%,statistical analysis of anti-HAV positive rate was made using simple catalytic model. The trsults of fit were satisfied(x2=7.18,P<0.7).Teh average infectivity (r)in seven regions was 0.2425. The results showed that the simple catalytic model could be applied to epidemiologlcal analysis of HAV infection.