Environmental factors associated with the distribution of visceral leishmaniasis in endemic areas of Bangladesh: modeling the ecological niche

Tropical Medicine and Health
Abu Yousuf Md AbdullahMd Faruk Hossain

Abstract

Visceral leishmaniasis (VL) is a parasitic infection (also called kala-azar in South Asia) caused by Leishmania donovani that is a considerable threat to public health in the Indian subcontinent, including densely populated Bangladesh. The disease seriously affects the poorest subset of the population in the subcontinent. Despite the fact that the incidence of VL results in significant morbidity and mortality, its environmental determinants are relatively poorly understood, especially in Bangladesh. In this study, we have extracted a number of environmental variables obtained from a range of sources, along with human VL cases collected through several field visits, to model the distribution of disease which may then be used as a surrogate for determining the distribution of Phlebotomus argentipes vector, in hyperendemic and endemic areas of Mymensingh and Gazipur districts in Bangladesh. The analysis was carried out within an ecological niche model (ENM) framework using a maxent to explore the ecological requirements of the disease. The results suggest that VL in the study area can be predicted by precipitation during the warmest quarter of the year, land surface temperature (LST), and normalized difference water index (NDWI). ...Continue Reading

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Citations

Nov 24, 2017·Tropical Medicine and Health·Ashraf DewanMd Masudur Rahman
Jan 27, 2018·Parasites & Vectors·Lahiru Sandaruwan GalgamuwaDevika Iddawela
Nov 8, 2019·Transboundary and Emerging Diseases·Mohammad Amin GhateeSaeed Hosseini Teshnizi
Mar 10, 2020·PLoS Neglected Tropical Diseases·Lina Ghassan YounisMegha Raj Banjara

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Software Mentioned

ASTER GDEM
maxent
ISPAN
WorldClim

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