An interventional study of Bottom-up intervention in Schistosomiasis, sponsored by University of Notre Dame. Active, not recruiting at 1 site in Senegal. Open to participants aged 5 Years to 17 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-03-22.
Sponsored by University of Notre Dame · Not applicable, Interventional, and Prevention
Schistosomiasis is a flatworm transmitted from freshwater snails to humans in the tropics. In addition to this infectious disease, tropical developing countries are faced with malnutrition. We propose to alter pesticide and compost use to reduce schistosomiasis and maintain or even improve crop production.
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 schistosoma 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 schistosoma 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 schistosoma 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.
79 studies on the registry are indexed under Schistosomiasis; 14 are open to participants now.
This study's enrollment of 1,477 is above the median of 289 across 52 interventional studies indexed under Schistosomiasis.
Browse Schistosomiasis studies →University of Notre Dame is the lead sponsor of 29 studies on the registry; 9 are open to participants now.
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Exclusion Criteria:
Status quo pesticide use
Villages shifted to low risk pesticides that don't kill prawns
Other: Bottom-up intervention
Villages that eliminate agrochemicals
Other: Bottom-up intervention
Some interventions are bottom-up, where we manipulate the resources of snails and some are top-down, where we manipulate the predators of snails.
Also known as: Top-down intervention
Schistosomiasis reinfection rate
Schistosomiasis reinfection rate
Time frame: One year
Crop yields
Crop yields
Time frame: One year
Plan to share: Undecided
No publications or documents are linked to this record.
Started Jan 2017 (actual). Primary completion is estimated for Sep 2025, 104 months after the start.
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This study is active, not recruiting, as verified in Mar 2023. You cannot join it, but the record below documents what was studied.
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