Title: Longitudinal observation of contamination with eggs of Ascaris lumbricoides and Trichuris trichiura and control efforts through improved drinking water,latrine improvements and environmental improvements
Abstract: Objective To ascertain the level of contamination with eggs of soil-transmitted nematodes and the effects of efforts to control infection in the population through improved drinking water,latrine improvements,and environmental improvements.Methods In two villages of Jinxian County,Ascaris lumbricoides and Trichuris trichiura eggs in soil were tested using saturated magnesium sulfate flotation,and the population was tested for infection with soil-transmitted nematodes using the Kato-Katz method.Results After drinking water was improved and latrine improvements were implemented,the rate at which eggs of A.lumbricoides and T.trichiura were detected in soil tended to decrease in both villages.One year after drinking water was improved and latrine improvements were made,the rate at which Ascaris eggs were detected in yards,living rooms,latrines,and vegetable farms and the overall rate at which these eggs were detected decreased;respective rates decreased 76.48%(P0.01),66.68%(P0.05),49.99%(P0.05),43.75%(P0.05),and 59.03%(P0.01).Rates remained relatively low afterwards.The rate at which Trichuris eggs were detected in those locations and the overall rate of detection decreased 68.74%,62.50%(P0.01),64.71%,64.71%,and 65.15%.The rate of dead Ascaris eggs and Trichuris eggs increased from 2.57% and 0.61% in 2005 to 69.81% and 78.13% in 2006,respectively,and the rate if dead eggs remained at about 70% two years later.Conclusion Control measures to improve drinking water and implement latrine improvements and environmental improvements significantly affected contamination of A.lumbricoides and T.trichiura eggs in soil and also proved to be an effective strategy for control of geohelminth infection in the human population.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot