Publication: Distribution pattern of anthroponotic cutaneous leishmaniasis caused by Leishmania tropica in Western Afghanistan during 2013-2014
Issued Date
2017-12-01
Resource Type
ISSN
18736254
0001706X
0001706X
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2-s2.0-85026538479
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Mahidol University
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SCOPUS
Bibliographic Citation
Acta Tropica. Vol.176, (2017), 22-28
Suggested Citation
Mahdi Fakhar, Mehdi Karamian, Mohammad Amin Ghatee, Walter Robert Taylor, Hossein Pazoki Ghohe, Sayed Abobakar Rasooli Distribution pattern of anthroponotic cutaneous leishmaniasis caused by Leishmania tropica in Western Afghanistan during 2013-2014. Acta Tropica. Vol.176, (2017), 22-28. doi:10.1016/j.actatropica.2017.07.028 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/42666
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Title
Distribution pattern of anthroponotic cutaneous leishmaniasis caused by Leishmania tropica in Western Afghanistan during 2013-2014
Abstract
© 2017 Anthroponotic cutaneous leishmaniasis (ACL), caused by Leishmania tropica, is the main cause of cutaneous leishmaniasis (CL) in the Herat province, Western Afghanistan. We investigated the role of environmental factors on ACL distribution in Herat. Epidemiological data from 2457 patients were retrieved from the local WHO sub-office. Shapefile layers of districts, cities, villages, land cover, soil type and digital elevation model (DEM) of the Herat province were used to assess, by logistic regression modelling, the effects of land cover, soil types, elevation, and proximity to the Harirud river on the distribution of ACL. The key determinants of distribution were: (i) close proximity to the Harirud river, (ii) elevation between 700 and 1200 m, (iii) intensive and intermittent irrigated cultivated land, and (iv) Haplocalcids with Torriorthents and Torrifluvents soil types. No ACL cases were found below 700 m, and a few cases were present at >1200 m in irrigated areas around the Harirud river. These findings suggest that moist soil and the humidity from irrigated areas found between 700 and 1200 m provide suitable breeding sites of Phlebotomus sergenti, the main sandfly vector of L. tropica in Afghanistan. The effect of elevation also explains the predominance of ACL over ZCL in this region. The present study showed that distribution of ACL is strongly associated with environmental factors in West Afghanistan where the political and socio-economic conditions may also affect the epidemiology of CL.
