• 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
  • 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
  • Space-time analysis of the dengue spreading dynamics in the 2004 Tartagal outbreak, Northern Argentina

    Extract of Acta tropica, (2007, vol. 103, no1, pp. 1-13 )
    ROTELA Camilo ; FOUQUE Florence ; LAMFRI Mario (1) ; SABATIER Phillipe ; INTROINI Virginia ; ZAIDENBERG Mario ; SCAVUZZO Carlos (1) ;
    The spreading dynamic of the 2004 dengue fever outbreak that occurred in Tartagal, Northwestern Argentina, was investigated. A total of 487 suspected dengue cases were recorded and geo-referenced. Maps of daily cases were generated for the 109 days of the outbreak. The epidemic affected (...)

    Published: 2008/08/18
  • Atmosphere, diseases and monitoring from space

    During the 21st Century, CO2 concentration in the atmosphere is to increase considerably causing global temperature increase. Few degrees increase in the atmosphere can have serious consequences on public health and diseases re-emergence and diffusion. For example, tropical diseases could increase in mid-latitudes, since mosquitoes and other disease-carrying insects may found appropriate climate and environment.
    Warming/cooling trends can be due also to natural cycles or low-frequency (...)

    Published: 2007/12/13
  • 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
  • Space and MATE project

    The emergence of dengue as a major public health problem has been dramatic in the American region.
    In Argentina, the first Dengue Epidemic was recorded between February and March 1916. During 70 years the country was free of Dengue until April 1997 when DEN-2 cases were detected at Oran, Salvador Maza, Guermes and Tartagal cities.
    In 1998, and during 2002, epidemic took place in Salta, Misione and Formosa provinces. In this context, the National Health Minister and CONAE have established (...)

    Published: 2008/05/21