Abstract:

The Weidu District, Yanling County and Yuzhou City were selected in Xuchang City for investigation of the status of soil-transmitted nematode infections in 2012, in accordance with the National Monitoring Program for Soil-Transmitted Nematodiasis（2011 Revised Edition）. Kato-Katz technique was used to detect soil-transmitted nematodes in feces of residents over 3 years old, and the cellophane tape peri-anal swab method was used to detect pinworm eggs in children between 3-12 years. A total of 2 991 fecal samples were examined. The total infection rate of soil-transmitted nematodiasis was 4.3%（128/2 991）, decreased by 63.0% and 55.1% when compared with that in 2010（11.6%） and that in Henan Province in 2004（9.5%） respectively. The infection rates of roundworms, whipworms, hookworms and pinworms were 3.7%（110/2 991）, 0.3%（9/2 991）, 0.1%（3/2 991）, and 0.2%（6/2 991）， respectively, all showing mild intensity of infection. The infection rate of soil-transmitted nematodiasis was highest in farmers （5.5%，113/2 059）, followed by children （3.1%，3/98）.

Key words: Soil-transmitted nematode, Kato-Katz technique, Xuchang City