Activités scientifiques de Francois Taglioni. Télé-épidémiologie : prévoir l'apparition des moustiques par satellite. 05 août 2011 La télé-épidémiologie, étude des relations climat-environnement-santé assistée par l’imagerie satellite, fourmille de projets en Afrique de l’Ouest. Les cartes prédictives de risque entomologique, désormais opérationnelles, faciliteront les applications sanitaires. Des moustiques, des satellites et des hommes Un exemple de mare temporaire dans la région du Ferlo au Sénégal. Crédits : Jacques-André Ndione, 2006. « Plus de 250 piqûres par personne et par nuit durant la saison humide ! » s’exclame Jean-Pierre Lacaux, du laboratoire d’Aérologie à Toulouse qui étudie, avec le CNES, les relations climat-environnement-santé en Afrique subtropicale. Au Sénégal, la saison des pluies, de juin à octobre, est aussi la saison des moustiques, dans les villes et les campagnes. De nombreuses collections d’eau se forment alors, comme les mares temporaires, points d’eau pour le bétail et lieux de reproduction privilégiés des moustiques.
Des cartes prédictives qui facilitent la prise de décision. Using remote sensing to map larval and adult populations of Anopheles hyrcanus (Diptera: Culicidae) a potential malaria vector in Southern France. Télédétection, WNV, Los angeles 2007. Volume 117, 15 February 2012, Pages 57–71 Remote Sensing of Urban Environments Edited By Qihao Weng, Dale Quattrochi and Toby Carlson Abstract Although remotely sensed data have been used in public health studies, these studies are often limited by the critical choice that has to be made in data selection: either using data with high spatial but low temporal resolution, or data with high temporal but low spatial resolution. This choice creates significant limitations for time-dependent epidemiological studies, since it is often essential to have datasets with high spatial and temporal resolution.
Effectively synthesizing high temporal resolution imagery with high spatial resolution imagery can potentially ease this limitation. Highlights Keywords West Nile Virus; Urban environment; Image fusion; Temporal resolution; Spatio-temporal analysis. AmSud : neglected trop disease. Leishmaniose. Background Zoonotic visceral leishmaniasis is endemic in the Mediterranean Basin, where the dog is the main reservoir host. The disease's causative agent, Leishmania infantum, is transmitted by blood-feeding female sandflies.
This paper reports an integrative study of canine leishmaniasis in a region of France spanning the southwest Massif Central and the northeast Pyrenees, where the vectors are the sandflies Phlebotomus ariasi and P. perniciosus. Methods Sandflies were sampled in 2005 using sticky traps placed uniformly over an area of approximately 100 by 150 km. High- and low-resolution satellite data for the area were combined to construct a model of the sandfly data, which was then used to predict sandfly abundance throughout the area on a pixel by pixel basis (resolution of c. 1 km). Conclusions Figures Editor: Simon Gubbins, Institute for Animal Health, United Kingdom Received: January 17, 2011; Accepted: May 13, 2011; Published: August 9, 2011 Copyright: © 2011 Hartemink et al.
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