Chin J Schisto Control ›› 2019, Vol. 31 ›› Issue (3): 244-.

### Application and effect of integrated control model of schistosomiasis interruption in mountainous and hilly endemic regions

LIU Yang, CHEN Lin, MENG Xian-Hong, ZHANG Yi, LU Ding, XU Jia, LI Rong-Zhi, WU Zi-Song, ZHONG Bo*

1. Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, China
• Online:2019-08-28 Published:2019-08-28

### 山丘型流行区阻断血吸虫病综合防治模式探索及效果

1. 四川省疾病预防控制中心（成都610000）
• 作者简介:刘阳，女，博士，副研究员。研究方向：血吸虫病流行病学、健康与社会行为学
• 基金资助:
四川省血吸虫病防治综合示范区项目；美国国立卫生院项目（IR21AI115288）

Abstract: Objective　To explore the integrated schistosomiasis control model in mountainous and hilly endemic regions, so as to provide insights into the development of the schistosomiasis elimination strategy. Methods　Five hilly and mountainous areas endemic for schistosomiasis were selected as the integrated control demonstration areas in Sichuan Province from 2011 to 2015. According to the epidemic characteristics, economic levels and overall development planning of the demonstration areas, the goals, strategies and measures were developed, and the effectiveness of schistosomiasis control was evaluated following implementation of the integrated control. Results　The support system of the integrated schistosomiasis control model was built in the integrated control demonstration areas in Sichuan Province from 2011 to 2015, and five ecological, industrialized and sustainable development models of integrated schistosomiasis control were developed, including integration of balancing rural and urban development, systematic ecological improvement, intensified ecological agriculture, scientific management and health education of schistosomiasis control and ecological ethnic circular economy. Since the implementation of the integrated schistosomiasis control model, the snail habitats were completely changed. Until 2015, 92.0% of all historical areas with snails were managed, the coverage of safe drinking water was 100.0%, and more than 95.0% of the livestock were fenced. The coverage of sanitary toilets increased by 93.0%, 96.8%, 78.8%, 87.1% and 82.0% from 2011 to 2015, respectively, and the farmers’ mean yearly income increased by 32.7% in the demonstration areas. From 2011 to 2015, the seroprevalence of human Schistosoma japonicum infections reduced from 3.1% in 2011 to 1.6% in 2015 in the demonstration areas, and no egg?positives were identified. In addition, the number of fenced bovines reduced year by year, and no egg?positives were detected. The areas of snail habitats were 398.7, 108.2 hm2 and 52.9 hm2 in the demonstration areas from 2011 to 2013, with no infected snails found, and no snails were detected since 2014. The awareness of schistosomiasis control knowledge and percentage of correct behavior formation increased year by year among residents in the demonstration areas from 2011 to 2015. Conclusions　The five integrated schistosomiasis control models meet the needs of the current schistosomiasis control activities in mountainous and hilly endemic areas of Sichuan Province, and achieve the goals of controlling the sources of S. japonicum infections, economic development, social progress and improving the ecological environment, which provides new insights into schistosomiasis elimination in the country.

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