Chen Bao-jian, Li Li-sha, Zhang Rong-yan, Li Yan-rong, Zhang Zhi-fang, Zheng Guo-bin, Fang Yan-yan, Lin Chen-xin, Jiang Dian-wei
Fujian Provincial Center for Disease Control and Prevention, Fuzhou 350001, China.
Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi. 2012 Feb 29;30(1):52-5.
To analyze the prevalent trend of soil-transmitted nematode infection in Fujian Province during the past 5 year surveillance and evaluate the control effect.
From 2006 to 2010, fecal samples of the inhabitants of 3 years old and above were collected every November and examined for intestinal helminth eggs by the modified Kato s thick smear technique at the 2 surveillance sites: Punan village of Zhangzhou and Gushan village of Shaowu. Cellophane tapes were used to detect pinworm eggs for children aged 3-12. Soil samples were also collected from vegetable field, lavatory, courtyard and kitchen of 20 randomly selected families (in 2 villages) each with stool egg-positive findings and examined for ascaris eggs by a modified saturated sodium nitrate floatation method.
The prevalence of soil-transmitted nematode infection at the surveillance sites decreased from 45.3% (946/2087) in 2006 to 15.1% (226/1494) in 2010, with a reduction of 66.6%. Among the infected subjects, hookworm infection occupied 75%-85%, while ascaris or trichuris infections each accounted for less than 10%. In terms of infection intensity, 65.2%-85.5% of the hookworm infection was light, and majority of the infected subjects were farmers. The pinworm prevalence in children were still high although it had dropped down from 46.1% (140/304) in 2006 to 29.8% (36/121) in 2010, declined by 35.4%. In the 5 years, totally 400 soil samples from 100 families were examined and 21 samples were found ascaris egg positive with viable eggs in only one sample.
The 5 year surveillance reveals a decreasing trend of the soil-transmitted nematode prevalence but shows a relatively high hookworm infection rate in the population and pinworm infection in children.
分析福建省过去5年监测期间土源性线虫感染的流行趋势并评估防控效果。
2006年至2010年，每年11月在2个监测点（漳州市浦南村和邵武市鼓山村）采集3岁及以上居民粪便样本，采用改良加藤厚涂片法检测肠道蠕虫卵。采用透明胶纸法检测3 - 12岁儿童蛲虫卵。还从20个随机抽取的（来自2个村庄）粪便虫卵阳性家庭的菜地、厕所、庭院和厨房采集土壤样本，采用改良饱和硝酸钠漂浮法检测蛔虫卵。
监测点土源性线虫感染率从2006年的45.3%（946/2087）降至2010年的15.1%（226/1494），下降了66.6%。在感染人群中，钩虫感染占75% - 85%，而蛔虫或鞭虫感染各占不到10%。就感染强度而言，65.2% - 85.5%的钩虫感染为轻度，大多数感染对象为农民。儿童蛲虫感染率虽从2006年的46.1%（140/304）降至2010年的29.8%（36/121），下降了35.4%，但仍处于较高水平。5年间，共检测了100个家庭的400份土壤样本，发现21份样本蛔虫卵阳性，仅1份样本有活卵。
5年监测显示土源性线虫感染率呈下降趋势，但人群中钩虫感染率相对较高，儿童蛲虫感染率较高。
