• Rift Valley fever in a zone potentially occupied by Aedes vexans in Senegal : dynamics and risk mapping

    Extract of Geospatial Health - Volume 3, Number 2 May 2009, Pages 211-220
    Cécile Vignolles , Jean-Pierre Lacaux , Yves M. Tourre , Guillaume Bigeard [2], Jacques-André Ndione , Murielle Lafaye [1]
    This paper presents an analysis of the interaction between the various variables associated with Rift Valley fever (RVF) such as the mosquito vector, available hosts and rainfall distribution. To that end, the varying zones potentially occupied by mosquitoes (ZPOM), rainfall events and (...)

    Published: 2009/05/18
  • Classification of ponds from high-spatial resolution remote sensing

    Extract of Remote Sensing of Environment 106 (2007) 66-74. Article write by the teams of Media-France ; For more information do not hesitate to contact us.
    J.P. Lacaux , Y.M. Tourre ,C. Vignolles, J.A. Ndione M. Lafaye
    Abstract During the rainy season the abundance of mosquitoes over the Ferlo region (Senegal) is linked to dynamic, vegetation cover and turbidity of temporary and relatively small ponds. The latter create a variable environment where mosquitoes can thrive and thus (...)

    Published: 2010/02/03
  • GIS and High-Resolution Remote Sensing Improve Early Warning Planning for Mosquito-Borne Epidemics

    Extract of HealthyGIS ; november 2007
    By Yves M. Tourre, Delphine Fontannaz, Cécile Vignolles, Jacques-André Ndione, Jean-Pierre Lacaux, and Murielle Lafaye
    Fifty years of successful efforts in the prevention and control of infectious diseases and epidemics have inspired confidence and optimism in modern medicine and technology. Nevertheless, epidemics remain a conspicuous challenge to public health today. In the context of climate change and rapidly increasing population, some epidemics (...)

    Published: 2010/02/03
  • Mapping of zones potentially occupied by Aedes vexans and Culex poicilipes mosquitoes, the main vectors of Rift Valley Fever in Senegal

    Extract of Geospatial Health 3(1), 2008, pp. 69-79
    Yves M. Tourre Jean-Pierre Lacaux , Cecile Vignolles , Jacques-André Ndione Murielle Lafaye,
    Abstract. A necessary condition for Rift Valley fever (RVF) emergence is the presence of Aedes (Aedimorphus) vexans and Culex (Culex) poicilipes mosquitoes carrying the arbovirus and responsible for the infection. This paper presents a detailed mapping in the Sahelian region of Senegal of zones potentially occupied by these mosquitoes (ZPOMs) (...)

    Published: 2009/02/02
  • What is AdaptFVR project ?

    AdaptFVR project’ aim to study the climates change impacts on Senegal emerging Rift Valley Fever (RVF). This project also aim to study the required strategies for a better cattle management in Sahel.
    The CNES remote epidemiology conceptual approach applied to the Rift Valley Fever in the Senegal Ferlo region during 2003 season allowed to produce cattle RVF exposure dynamic risk maps including as primary inputs the rain events, the vector (Aedes vexans and Culex poicilipes) density and the (...)

    Published: 2009/06/02
  • In situ data

    A major campaign of field measurements took place during the rainy season 2010.
    Twenty cattle ranches were selected in different ecological facies area in Barkedji.
    Several types of data were collected :
    entomological measurements (identification of mosquito species, measure of aggression, mosquito ecology, distribution, serological analysis) ;
    climate in situ data collection (rainfall, temperature, relative humidity, wind speed and direction) ;
    pastoralism socio-economic surveys (...)

    Published: 2011/02/22
  • What is this project ?

    AMMA RVF Senegal Project is the logical/historical follow-up of the EMERCASE project.
    EMERCASE, started in July 2000, as a project from the S2E consortium and was to identify and study the key biological and environmental factors triggering outbreaks of the Rift Valley Fever (RVF).

    Published: 2007/11/26
  • Mapping Rift Valley fever and malaria risk over West Africa using climatic indicators

    Extract of ATMOSPHERIC SCIENCE LETTERS - 18 August 2010
    Published online in Wiley Online Library DOI : 10.1002/asl.296
    C. Caminade, J. A. Ndione, C. M. F. Kebe, Y. M. Tourre,,L J-P. Lacaux, C. Vignolles, J. B. Duchemin, I. Jeanne and A. P. Morse [1]
    The aim of this study is to highlight the recent progress in mapping vector-borne diseases in West Africa using modelling and field experiments. Based on climatic indicators, methods have been developed to map Rift Valley fever (...)

    Published: 2011/02/24
  • Space and RFV in Senegal

    SPOT-5 imagery allowed ponds detection in the Ferlo region of the Sahel using high-resolution ( 10 m pixels) images. Four spectral bands/channels were used, i.e. the green channel (0.50 to 0.59 μm), the red channel (0.61 to 0.68 μm), the near-infrared channel (NIR, 0.78 to 0.89 μm) and the mediuminfrared channel (MIR, 1.58 to 1.75 μm). Radiometric and geographic corrections, needed due to small changes in satellite altitude, inclination, position relative to the sun, curvature of earth, state (...)

    Published: 2009/05/18