浙江省2005-2010年土源性线虫病监测结果分析

The surveillance on soil.transmitted nematode infections in Zhejiang Province during 2005-2010

目的分析2005--2010年浙江省人群土源性线虫病感染状况和变化趋势，为制定防治策略提供科学依据。方法在浙江省设立衢江区、平湖市、景宁县、开化县、松阳县等5个监测点，以当地居民为监测对象，收集监测对象的粪便样本，采用改良加藤厚涂片法（Kato-Katz）检查蛔虫卵、鞭虫卵、钩虫卵，3～12周岁儿童加做透明胶纸肛拭法检查蛲虫卵。根据2005—2010年土源性线虫病监测数据进行分析。结果累计粪检7442人，2005—2010年土源性线虫的感染率依次为1.30％、2.36％、6．07％、8．08％、4．80％和1．19％。2010年土源性线虫感染率低于2006--2009年（χ2=4．553，P〈0．05；χ2=58．023，P〈0．01；χ2=94．399，P〈0．01；χ2=45．855，P〈0．01）。开化县2010年土源性线虫感染率低于2007--2009年（χ2=108．957，P〈0．01；χ2=116．892，P〈0．01；χ2=43．394，P〈0．01）；景宁县2008年土源性线虫感染率高于2006年及2007年（χ2=4．376，P〈0．05；χ2=4．858，P〈0．05），两县都以钩虫感染为主。结论浙江省土源性线虫总感染率呈下降趋势，但部分地区钩虫感染率仍较高，浙江省土源性线虫病流行基本得到有效控制。

Objective To analyze the current status and trends of the soil-transmitted nematode infections in Zbejiang Province from 2005 to 2010 and provide scientific evidence for the prevention and control strategy. Methods Stool samples were collected from local residents recruited from Qujiang, Pinghu, Jingning, Kai hua and Songyang in Zhejiang Province. Modified Kato-Katz method was used to examine eggs of Ascaris, hookworm, Trichuris trichiura, and the method of cellaphane analswab was used to examine eggs of Enterobius for 3-12 years old children. The surveillance data of soil-transmitted nematodes from 2005 to 2010 were collected and analyzed. Results Fecal smears examination was conducted on 7 442 people cumulatively, the infection rate of soil-transmitted nematodes was 1.30%, 2.36%, 6.07%, 8.08%, 4.80% and 1.19% from 2005 to 2010, respective- ly. The infection rate of soil-transmitted nematodes was significantly lower in 2010 than those from 2006 to 2009 （χ2= 4.553, P 〈 0.05;χ2= 58.023, P 〈 0.01;χ2= 94.399, P 〈 0.01;χ2= 45.855, P 〈 0.01）. The infection rate in Kaihua was significantly lower in 2010 than those from 2007 to 2009 （χ2=108.957, P 〈 0.01; χ2=116.892, P 〈 0.01;χ2 = 43.394, P 〈 0.01）, and the infection rate in Jingning was significantly higher in 2008 than the results of 2006 and 2007 （χ2 = 4.376, P 〈 0.05;χ2 = 4.858, P 〈 0.05）. The infection of hookworm was the main type of infection in the two areas. Conclusion The overall infection rate of soil-transmitted nematodes showed a de- cline trend in Zhejiang Province, but the infection rate of hookworm was still high in some areas. The epidemic situation of soil-transmitted nematodes has been controlled basically in Zhejiang Province.