Abstract:

Objective To analyze the longitudinal observation data of soil-transmitted nematode diseases at the national longitudinal observing pilot in Tongcheng City from 2011 to 2013. Methods The infection rate of the residents at Tongcheng City was examined by Kato-Katz thick smear technique“one stool speci⁃
men-three slides”. The conditions of“Improving Drinking Water and Lavatories”from 2011 to 2013 were investigated by random sampling method. Results The total of 3 001 persons was investigated from 2011 to 2013, the yearly infection rate was 2.4%, 1.3% and 3.0%, respectively. There was no regular pattern comparing the infection rate between males and females. The infection rate maintained the highest level in age group more than 60-year-old, the yearly infection rate of this age-group was 5.2%, 3.0% and 6.1, respectively. The infectiosity of the infected people was concentrated in mild infection group and ancylostomiasis was the major soil transmitted nematode disease. The application of sanitary toilets showed an upward trend during the 3 years,and the using of field water disappeared after 2012. Conclusion Hookworm disease should be the key on soiltransmitted nematode diseases control and the age group more than 60-year-old would be the focus population in Tongcheng City.

Key words: Soil-transmitted nematode diseases, Longitudinal study