2006~2010年辽宁省土源性线虫病监测分析

Analysis on the epidemiological situation of soil-transmitted nematode infections in Liaoning Province from 2006 to 2010

目的了解2006--2010年辽宁省土源性线虫病流行情况，为寄生虫病的预防控制决策提供科学依据。方法按照辽北、辽中、辽南地区分布，每地区选择一个市作为监测点，调查对象选择年龄3周岁以上常住居民，收集受检者粪便，采用改良加藤法（一粪三检）检查土源性线虫卯，计算土源性线虫感染率。12岁以下儿童加做透明胶纸肛拭法检查蛲虫。结果2006--2010年，辽宁省累计调查6579人次，各年土源性线虫感染率依次为5．88％、0．67％、0．39％、0、0．57％，人群感染情况呈波动下降趋势。0～10岁年龄组的土源性线虫感染率为1．06％，在各年龄组中最高。不同性别人群问土源性线虫感染率差异无统计学意义（x2=2．000，P〉0．05）。60岁以上年龄组人群蛔虫感染率为1．11％，在各年龄组中最高。不同性别人群间蛔虫感染率差异无统计学意义（x2=2．000，P〉0．05）。结论辽宁省属于土源性线虫病低流行区，但高危人群仍然具有较高的感染率，应继续开展监测工作。

Objective To understand and analyze the epidemiological situation of soil-transmitted nematode infections in Liaoning Province. Methods A city was chosen as monitoring point in every area distributing in the north, middle and south of Liaoning Province. The stool samples of the residents above 3 years old were collected and examined with modified Kato-Katz thick smear ＂one stool specimen-three slides＂, and adhesive cellophane anal swab method was applied for examining the eggs of Enerobius vermicularis in children aged 3 - 12. Results 6 579 persons were investigated from 2006 to 2010, the yearly infection rates were 5.88% , 0.67% , 0.39%, 0 and 0.57%. A declined tendency was showed. The highest infection rate was 1.06% , which appeared in the age group below 10. There were no significant differences between different genders about soil-transmitted nematode infections rates（x2 = 2. 000,P 〉 0.05 ）. The age group above 60 had the highest infection rate which was 1.11% , and there were no significant differences between different genders about A. lumbricoides infections rates （X2 = 2. 000, P 〉 0.05 ）. Conclusion Liaoning Province was in the low epidemical area of soil-transmitted nematode infections, but high infection rate still existed in the high risk population. It is necessary to continue monitoring in Liaoning Province.