河北省农村人群蛔虫感染的流行病学调查

EPIDEMIOLOGICAL STUDY ON INFECTION OF HUMAN ASCARIS LUMBRICOIDES IN RURAL DISTRICT OF HEBEI PROVINCE.

目的:了解当前我省人体重要寄生虫中蛔虫的流行特征,为今后有计划、有重点的开展蛔虫病防治工作提供科学依据。方法:应用分层整群随机抽样方法,2002年选择了6个中签县15个调查点,对调查对象采用改良加藤厚涂片法检查粪便中蛔虫虫卵。结果:调查了7 316人,检出蛔虫感染者117例,感染率为1.60%。蛔虫感染呈全省广泛性分布,不同地区间差异有统计学意义(χ2=90.69,P<0.005),丰宁县感染率最高为4.60%;以10岁以下儿童感染较为严重,感染率为2.24%;不同文化程度间差异有统计学意义(χ2=10.42,P<0.05),学龄前儿童最高,感染率为2.07%;性别间差异无统计学意义(χ2=0.00,P>0.05);由于感染率最高的丰宁县满族人口占98.60%,致使调查的民族分布,以满族感染率最高。蛔虫感染具有明显的家庭聚集性。结论:该省卫生条件较差的地区人群中蛔虫感染率较高,应作为今后蛔虫病防治的重点地区。

Objective. In order to know epidemiological characteristics of Ascaris Lumbricoides in HeBei province, so as to pro vide scientific basis for Ascaris Lumbficoides prevention and treatment. Methods： Random sampling was used in 2002 in this investigationa and 15 pilot sites were selected from 6 counties of HeBei province. Local residents were examined by modified Kato- Katz＇s thicksmear technique for A. Lumbricoides eggs in feces. Results： 117 of 7 316 residents were found to be infected with A. Lumbricoides by fecal examination, the infection rate reached to 1.60%. The infector of A. Lurnbricoides were widely distributed all of the province. There was significant difference in different areas （x^2 =90.69, P〈0.005）, the area of highest infection rate was fengning county, with the infection rate was 4.60%. Among different age groups, age under 10 groups was severe one, with infection rate was 2.24%. There was significant difference in infection rate in cultural levels （x^2 = 10.42, P〈0.05）, the infection rate of Pre-school children was the highest, reaching to 2.07%. There was no significant difference in infection rate in sexes （x^2= 0.00, P 〉0.05）. Because Man people accounted 98.60 % of the residents in fengning county where infection rate was the highest in all distinct, the infection rate of Man people was the highest in this investigation. The result showed that notably family aggregation was found in A. Lumbricoides infection. Conclusion： Although the infection rate of human A. Lumbricoides was lower in rural distinct of HeBei province, but the infection rate was higher in the distinct where the people have less yearly income and the hygiene condition was lower. Therefore, the prevention and treatment of A. Lumbricoides should be strengthened in these areas in HeBei province.