• 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
  • 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
  • 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