Desenvolvimento de um índice hidrológico para aplicação em estudos de distribuição da prevalência de esquistossomose em Minas Gerais

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The aim of this paper is to propose and assess a hydrological index, denominated here hydrological mobility index (MH), potentially capable of explaining the geographical distribution of schistosomiasis. The index was established through of the interaction with slope data, climatic data and water accumulation area, using data derived from remote sensing and geographic information system, integrated at municipality level. This index tries to reflect the fact that the rapid movement of water displaces the snails, preventing them of fixing possible points at rivers borders and ponds. The hydrological mobility index is used to establish a relationship with the prevalence of schistosomiasis in fourteen municipalities of the state of Minas Gerais, Brazil.