A survey on intestinal nematode infection of exocomers in Shanghai

To survey the current status of intestinal nematode infection of exocomers in Shanghai. 2383 stool samples of exocomers from Minhang,Baoshan,Pudong and Chongming districts or counties where the migratory labors were clustered, were detected by Kato-Katz. The overall infection rate of intestinal nematodes was 17.00%(405/2383). Among the 3 major species of nematodes detected the infection rates of Ascaris lumbricoides, Trichuris trichiura and hookworm was 8.10%,8.06% and 0.84% respectively. 96% cases of them contracted light, moderate infection based on fecal egg count. Two-parasitism accounted for 8.58% of all infection of exocomers. Difference was non significant in the infection rates of 3 species of nematodes between male and female (χ 2=0.04～3.57, P0.05). The difference of the infection rates among different age groups was significant (χ 2=33.05, P 0.001 ). Infection rate was the highest in age group of 5～9 years (23.18%). Difference in the infection rates between school-age children (21.52%) and scatter children (23.17%) was non significant (χ 2=0.19, P0.05). [Conclusion] The intestinal nematode infection of exocomer is higher than that of local residents in Shanghai. Children and juveniles are most readily affected. A suggestion was thus made that parasitic disease control in Shanghai should be concentrated on children and juveniles among exocomer.