Abstract:

【Abstract】 Objective  To investigate the infection status of soil transmitted nematodasis in Tunxi district of Huangshan city and the factors affecting the prevalence. Methods  Between 2012 and 2014, we selected three villages, including Yanxi, Bangxia and Huangdun, and Baishan primary school in Yanghu town as monitoring sites. The stool samples were collected in every November for consecutive three years, and detected with modified Kato-Katz thick smear technique. The positive samples were recorded and computed for the infection rate. Results  The positive sample was 0.62%(4/650), 8.14%(49/591) and 2.31%(14/606), respectively, for Yanxi, Bangxia and Huangdun village, and was free in Baishan primary school. Infection in Bangxia village was primarily associated with Ascaris, and in Huangdun with hookwarm. No severe infection was found in the three monitoring sites. Mild infection occurred in 4 cases in Yanxi, and mild to moderate infection was 79.59%(39/49) and 20.41%(10/49) in Bangxia. Yet mild infection accounted for 92.86%(13/14) in Huangdun. Highest infection rate was found in villagers aged 60 years and over. Conclusion  Although infection with sold transmitted nematodasis appears lower in Tunxi disctirct in general, yet the infection varies in areas, and still calls much attention to the local administration.

Key words: Soil transmitted nematode, Infection, Kato-Katz thick smear, Tunxi district