Schistosomiasis in Senegal
关键词
抽象
描述
We propose two types of manipulations. Bottom-up manipulations will affect snail resources, whereas top-down manipulations will affect snail predators. For the bottom-up manipulations, we will clear shistosoma infections in school children, then remove the primary habitat for snails, the submerged macrophyte Ceratophyllum demersum (with proper unmanipulated controls), compost it, apply it to crops, and then quantify reinfection rates and crop yields. The second bottom-up manipulation will be to clear shistosoma infections in school children, apply three agrochemical treatments (status quo control, shift to lower risk herbicides, or eliminate herbicides and fertilizers), and then quantify reinfection rates and crop yields. Farmers will be compensated for any loss in yields. For the top-down manipulations, every village will receive prawns that depredate snails. We will clear shistosoma infections in school children, apply three agrochemical treatments (status quo control, shift to lower risk insecticides that don't kill prawns, or eliminate insecticides), and then quantify reinfection rates and crop yields. Farmers will be compensated for any loss in yields.
日期
最后验证: | 04/30/2020 |
首次提交: | 06/11/2017 |
提交的预估入学人数: | 06/11/2017 |
首次发布: | 06/13/2017 |
上次提交的更新: | 05/10/2020 |
最近更新发布: | 05/12/2020 |
实际学习开始日期: | 01/01/2017 |
预计主要完成日期: | 05/31/2021 |
预计完成日期: | 05/31/2021 |
状况或疾病
干预/治疗
Other: Bottom-up intervention
相
手臂组
臂 | 干预/治疗 |
---|---|
No Intervention: Status quo Status quo pesticide use | |
Active Comparator: Low risk Villages shifted to low risk pesticides that don't kill prawns | |
Experimental: No agrochemcials Villages that eliminate agrochemicals |
资格标准
有资格学习的年龄 | 5 Years 至 5 Years |
有资格学习的性别 | All |
接受健康志愿者 | 是 |
标准 | Inclusion Criteria: - School age children Exclusion Criteria: - Non-school age children |
结果
主要结果指标
1. Schistosomiasis reinfection rate [One year]
次要成果指标
1. Crop yields [One year]