›› 1997, Vol. 15 ›› Issue (6): 397-402.

• 防治经验 • Previous Articles     Next Articles

ONE-YEAR LONGITUDINAL STUDY ON DYNAMICSOF ASCARIS INFECTION IN RURAL COMMUNITIESOF JIANGXI PROVINCE,CHINA

Peng Weidong1; Zhou Xianmin1; Cui Xiaomin1; D.W.T.Crompton2;
R.R.Whitehead2; Yang Yang3; Wu Weixing3; Xu Kaiwu3; Yan Yongxing3; Xiong
Jiangqin3; Wu Haigeng3; Peng Jiyuan4; Wan Xiaomao5; Fu Qinru5; He Jianping5   

  1. 1 Department of Parasitology; Jiangxi Medical College, Nanchang 330006 2 WHO Collaborating Centre for Soil-transmitted Helminthiasis, University of Glasgow, Scotland, UK 3 Nanchang Hospital of the Combination of Traditional Chinese Medicine and Western Medicine, Nanchang 330003 4 Department of Mathematics, Nanchang Educational College, Nanchang 330008 5 Qiaoshe Clinic, Xinjian County, Xinjiang 330140
  • Received:1900-01-01 Revised:1900-01-01 Online:1997-12-28 Published:1997-12-28

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Abstract: AIM:To study the dynamics of Ascaris infection in rural Communities where intervention measurements were not introduced. METHODS:An
one- year longitudinal study consisting of 6 cross-sectional surveys at about two-month interval was carried out. RESULTS: A high prevalence of above 60% throughout the year was found in the area with a significant fluctuation in both prevalence and intensity (EPG) of the communities. Age-stratified analses further indicated that the fluctuation was only found to be significant in some children groups other than adult groups. Changes in monthly development rate of eggs of A.lumbricoides in soil was found in good accordance with the fluctuation of monthly mean temperature in the area during the year. cONCLUSION: The transmission of Ascaris infection in this area was relatively stable but with significant fluctuation in both revalence and in tensity during the year. The fluctuation could be attributed to the seasonal effects on the development of A.lumbricoides eggs in soil. Children were found to be the main population contributing to the fluctuation of Ascaris infection in the communities.

Key words: Ascaris lumbricoides, eggs, prevalence, intensity