Title
Spatial analysis of **Leishmania donovani** exposure in humans and domestic animals in a recent kala azar focus in NepalSpatial analysis of **Leishmania donovani** exposure in humans and domestic animals in a recent kala azar focus in Nepal
Author
Faculty/Department
Institute of Development Policy and Management
Faculty of Pharmaceutical, Biomedical and Veterinary Sciences . Biomedical Sciences
Research group
Department of Biomedical Sciences - other
Institute of Development Policy and Management - other
Department of Biomedical Sciences
Publication type
article
Publication
London,
Subject
Human medicine
Source (journal)
Parasitology. - London, 1908, currens
Volume/pages
137(2010):11, p. 1597-1603
ISSN
0031-1820
1469-8161
ISI
000283190100001
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Visceral leishmaniasis (VL) is a major public health problem in the Indian subcontinent where the Leishmania donovani transmission cycle is described as anthroponotic. However, the role of animals (in particular domestic animals) in the persistence and expansion of VL is still a matter of debate. We combined Direct Agglutination Test (DAT) results in humans and domestic animals with Geographic Information System technology (i.e. extraction maps and scan statistic) to evaluate the exposure to L. donovani on these 2 populations in a recent VL focus in Nepal. A Poisson regression model was used to assess the risk of infection in humans associated with, among other factors, the proportion of DAT-positive animals in the proximities of the household. The serological results showed that both humans and domestic animals were exposed to L. donovani. DAT-positive animals and humans were spatially clustered. The presence of serologically positive goats (IRR=9·71), past VL cases (IRR=2·62) and the proximity to a forest island dividing the study area (IRR=3·67) increased the risk of being DAT-positive in humans. Even if they are not a reservoir, domestic animals, and specially goats, may play a role in the distribution of L. donovani, in particular in this new VL focus.
E-info
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