CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES >

2025 , Vol. 43 >Issue 1: 37 - 43

DOI: https://doi.org/10.12140/j.issn.1000-7423.2025.01.007

ORIGINAL ARTICLES

Research on the construction of risk assessment system for the transmission of echinococcosis endemic sites in Sichuan Province

  • ZHANG Zhongshuang ,
  • ZHANG Guangjia ,
  • YAO Renxin ,
  • YANG Liu ,
  • YU Wenjie ,
  • HE Wei ,
  • LIAO Sha ,
  • HUANG Yan ,
  • WANG Qian
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  • Institute of Parasite Diseases, Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, Sichuan, China

Received date: 2024-11-15

  Revised date: 2025-02-08

  Online published: 2025-03-26

Supported by

Science and Technology Projects of Sichuan Province(2023YFS0221);Key Laboratory Project for Prevention and Control of Echinococcosis of National Health Commission(2021WZK1005);Standardization Preliminary Research Project of the Chinese Center for Disease Control and Prevention in 2024(BZ2024-Q027)

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Abstract

Objective To construct a method for evaluating the risk of transmission of echinococcosis endemic site. Methods By analyzing the characteristics of the echinococcosis endemic in Sichuan Province from 2019 to 2023 and conducting in-depth interviews with experts, the items of assessment system of echinococcosis endemic site were determined and the first draft of the risk assessment system of echinococcosis endemic site was formed. The final draft of the risk assessment system for transmission of echinococcosis endemic site was formed through expert inquiry. Selected villages in Sichuan Province with newly diagnosed patients and patients aged 15 and above in 2023 to conduct transmission risk assessment. Intervened for one year based on the risk level of the endemic site, compared the risk level before and after intervention, and verify the effectiveness of the assessment system. Results A total of 11 experts participated in the questionnaire inquiry, and the effective response rates for both rounds of questionnaires were 11/11. The risk assessment system of echinococcosis endemic site was constructed successfully, including the evaluation scale of transmission risk of echinococcosis (4 first-grade indexes, 15 second-grade indexes, 39 third-grade indexes), the geographical scope of intervention for transmission risk of echinococcosis and the time range table for monitoring and intervention of transmission risk of echinococcosis. What’s more, a risk assessment scale for the transmission of echinococcosis endemic site was developed, and the criteria for risk levels were determined: general risk with a score below 36, high risk with a score between 36 and 55, and maximum high risk with a score above 55. The verification results of four endemic sites, namely Rangtang County endemic site, Ruoergai County endemic site 1, Ruoergai County endemic site 2 and Litang County endemic site, showed that the risk level of each endemic point remained unchanged or decreased after intervention, confirming the effectiveness of the evaluation system. Conclusion The risk assessment system of echinococcosis endemic site constructed in this study is reliable and practical, and can provide reference for the disposal and intervention of echinococcosis endemic site.

Key words： Echinococcosis; Endemic site; Risk assessment; System construction

Cite this article

ZHANG Zhongshuang , ZHANG Guangjia , YAO Renxin , YANG Liu , YU Wenjie , HE Wei , LIAO Sha , HUANG Yan , WANG Qian . Research on the construction of risk assessment system for the transmission of echinococcosis endemic sites in Sichuan Province[J]. CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES, 2025 , 43(1) : 37 -43 . DOI: 10.12140/j.issn.1000-7423.2025.01.007

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