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

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 6579 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. Key words: Nematode infection; Soil-transmitted nematode; Monitoring situation; Liaoning Province