Analysis of the Results of Two Nationwide Surveys on Clonorchis sinensis Infection in China

Objective To examine Clonorchis sinensis infection in China and evaluate the effectiveness of efforts to prevent and control it,two nationwide surveys were undertaken in 31 provinces,autonomous regions,and municipalities（PAMs） during 1988-92（the 1990 survey） and during 2001-04（the 2003 survey）.Metho...

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Bibliographic Details
Published in:Biomedical and environmental sciences 2012-04, Vol.25 (2), p.163-166
Main Authors: CHEN, Ying Dan, ZHOU, Chang Hai, XU, Long Qi
Format: Article
Language:English
Subjects:
Animals
China - epidemiology
Clonorchiasis - epidemiology
Clonorchiasis - parasitology
Clonorchis sinensis
Clonorchis sinensis - isolation & purification
Cluster Analysis
Female
Health Surveys
Humans
Male
PAMS
The status of infection in China
Two nationwide surveys
中国人
吸虫感染
感染率
抽样方法
自治区
调查结果
随机抽样
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Summary:Objective To examine Clonorchis sinensis infection in China and evaluate the effectiveness of efforts to prevent and control it,two nationwide surveys were undertaken in 31 provinces,autonomous regions,and municipalities（PAMs） during 1988-92（the 1990 survey） and during 2001-04（the 2003 survey）.Methods During the period 2001-04,two sampling methods were applied.The first method repeated the stratified cluster random sampling used in the 1990 survey;the second method applied two-characteristic stratified cluster random sampling in 27 PAMs—the 2003 endemic area（EA） survey.The Kato-Katz thick smear method was used for the nationwide survey.Results The infection rates of Clonorchis sinensis in the 1990 and 2003 surveys were 0.311% and 0.579%,respectively.The infection rate was 2.40% in the 2003 EA survey,and it was estimated that 12.49 million people in China were infected with Clonorchis sinensis.Conclusion The 2003 survey showed that the standardized infection rate of Clonorchis sinensis increased by 74.85% compared with the 1990 survey.The infection rate in males was higher than in females;the infection rate among people eating raw fish or eating out frequently was higher than among those who did not.
ISSN:0895-3988
2214-0190
DOI:10.3967/0895-3988.2012.02.006