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The economic impact of schistosomiasis

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摘要 Background:The economic impact of schistosomiasis and the underlying tradeofs between water resources devel‑opment and public health concerns have yet to be quantifed.Schistosomiasis exerts large health,social and fnan‑cial burdens on infected individuals and households.While irrigation schemes are one of the most important policy responses designed to reduce poverty,particularly in sub-Saharan Africa,they facilitate the propagation of schistoso‑miasis and other diseases.Methods:We estimate the economic impact of schistosomiasis in Burkina Faso via its efect on agricultural produc‑tion.We create an original dataset that combines detailed household and agricultural surveys with high-resolution geo-statistical disease maps.We develop new methods that use the densities of the intermediate host snails of schis‑tosomiasis as instrumental variables together with panel,spatial and machine learning techniques.Results:We estimate that the elimination of schistosomiasis in Burkina Faso would increase average crop yields by around 7%,rising to 32%for high infection clusters.Keeping schistosomiasis unchecked,in turn,would correspond to a loss of gross domestic product of approximately 0.8%.We identify the disease burden as a shock to the agricultural productivity of farmers.The poorest households engaged in subsistence agriculture bear a far heavier disease burden than their wealthier counterparts,experiencing an average yield loss due to schistosomiasis of between 32 and 45%.We show that the returns to water resources development are substantially reduced once its health efects are taken into account:villages in proximity of large-scale dams sufer an average yield loss of around 20%,and this burden decreases as distance between dams and villages increases.Conclusions:This study provides a rigorous estimation of how schistosomiasis afects agricultural production and how it is both a driver and a consequence of poverty.It further quantifes the tradeof between the economics of water infrastructures and their impact on public health.Although we focus on Burkina Faso,our approach can be applied to any country in which schistosomiasis is endemic.
出处 《Infectious Diseases of Poverty》 SCIE 2021年第6期106-106,共1页 贫困所致传染病(英文)
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