Human Geohelminthes Infection in Wulong County,Chongqing

Objective To Analyze the current distribution of human geohelminthes infection in Wulong County and to provide the basis for the development of countermeasures of control and prevention of helminthes infection.Methods Parasite eggs were collected from children under age 12 using anal swabs method.The eggs were identified using the modified Kato's method and the results were statistically analyzed.Results A total of 1 487 subjects were studied.Eggs from roundworm and hookworm were found in 93 infected persons,and the total infection rate was 6.25%.The infection rate with roundworm and hookworm was 4.57% and 1.68%,respectively.Compared with the infection rates obtained in 1990,the total rate of infection with roundworm,hookworm and pinworm was dropped to 92.92%,94.08% and 95.15%,respectively.Conclusion Wulong County is now classified as State Class-Ⅱ endemic area of geohelminthes.Disease control and prevent is still required in this area.