1. Use of geographic information system and remote sensing for assessing environment influence on leptospirosis incidence, Phrae province, Thailand
- Author
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Vincent Herbreteau, Florent Demoraes, Wasana Khaungaew, Jean-Pierre Hugot, Jean-Paul Gonzalez, Pattamaporn Kittayapong, Marc Souris, Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UR226, Institut de Recherche pour le Développement, UR 178 Fundamentals & Domains of Disease Emergence (IRD UR178), Phrae provincial Public Health Office, Ministry of Public Health - Thailande, Pharmacogénétique et abords thérapeutiques des maladies héréditaires, Institut National de la Santé et de la Recherche Médicale (INSERM), Fondation Jean Dausset, Inflammation intestinale pathologique de l'enfant, Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Conditions et territoires d'émergence des maladies : dynamiques spatio-temporelles de l'émergence, évolution, diffusion/réduction des maladies, résistance et prémunition des hôtes (CTEM), Center of Excellence for Vectors and Vector-Borne Diseases (CVVD), Mahidol University [Bangkok], Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE), and Demoraes, Florent
- Subjects
Rice growing ,EPIDEMIOLOGIE ,SYSTEME D'INFORMATION GEOGRAPHIQUE ,Epidemiology ,[SHS.GEO] Humanities and Social Sciences/Geography ,Geographic Information System ,TELEDETECTION SPATIALE ,POPULATION RURALE ,[SHS.GEO]Humanities and Social Sciences/Geography ,Remote sensing ,Environment ,Rodents ,RIZICULTURE ,PREVALENCE ,RONGEUR ,Exposure ,INFECTION ,Prevalence ,GESTION DE L'ENVIRONNEMENT ,RESERVOIR ,Leptospirosis ,Infection ,LEPTOSPIROSE - Abstract
International audience; Severe epidemics of leptospirosis yearly occurred in Thailand since 1997, causing over 1,200 deaths, especially among farmers highly exposed while working in flooded rice fields. Main vectors are wild rodents, spreading the human pathogenic bacteria (spirocheta) in the environment through their urine. Phrae province, which has recorded among the highest incidences, was chosen for a large scale spatial analysis, in collaboration with Phrae provincial Public Health Office. A health geographic database (GIS) was built, using SavGIS, a Geographic Information System (GIS) and Remote Sensing (RS) freeware developed by the Development Research French Institute (IRD), to understand the disease dynamics and assess the villagers' exposure. GIS and Remote Sensing processing have shown a great potential in analyzing vector-borne diseases but have never been applied to leptospirosis. The land use was extracted and vegetation indices computed from a TERRA ASTER satellite image and described around villages. In a second step, this information was compared with the reported disease incidence. Problems encountered due to the accuracy of biomedical and location-based data are detailed. The results are exposed and discussed in a preventive planning perspective.
- Published
- 2006