天津市2007~2010年人群土源性线虫感染状况分析

Analysis of the soil-transmitted nematode infection in Tianjin from 2007 to 2010

目的分析和总结天津市2007--2010年土源性线虫感染状况，为土源性线虫病的预防控制工作提供依据。方法依据国家监测方案要求，分别选择2个农村地区的村庄，采集3岁以上人群粪便，采用改良加藤原涂片法检查蛔虫、蛲虫、钩虫、鞭虫卵，12岁以下儿童加做透明胶纸肛拭法检查蛲虫卵。统计各虫卵感染率。采集土壤检测土壤中蛔虫卯污染状况。城市地区选择2所小学，检测蛔虫卯，计算感染率。结果2007--2010年间，农村地区共监测9327人，各年度蛔虫感染率分别为5．12％、2．84％、0、1．83％，未检出其他虫卵。土壤中蛔虫卵阳性率分别为0．37％、0．26％、0、0．32％。城区累计监测学生5016人，各年度蛔虫感染率分别为0．23％、0．40％、0．08％、0．74％。结论天津市土源性线虫感染率整体水平处于较低水平，但土壤仍能检出蛔虫卵，感染源的存在提示寄生虫的防控工作仍不能放松。

Objective To analyze the result of soil-transmitted nematode infection surveillance in Tianjin during 2007 -2010. Methods 2 villages in country side were chosen and human stool samples and soil samples were collected. Soil-transmitted nematode eggs of roundworm, hookworm, whipworm were examined by improved Kato-Kate thick smear method. The pinworm infections of children under 12 were examined by anus wiping method with transparent tape. The infection rates of them were then calculated. 2 primary schools in downtown were chosen. The roundworm eggs were examined and its infection rate was calculated. Results A total of 9 327 people had fecal examination in rural areas during 2007 - 2010. The yearly infection rates of roundworm were 5.12%, 2.84%, 0 and 1.83% respectively. No other worms were found. The positive rate of roundworm egg in soil sample was 0.37% ,0.26% ,0,0.32%. 5 016 students were examined in downtown, and the yearly infection rates were 0.23%, 0.40%, 0.08%, 0.74%. Conclusion The soil-transmitted nematode infection rate was low in Tianjin. But the source of infection is still available. Working on the disease control should be kept.