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Enzootic Activity of Rift Valley Fever Virus in Senegal
Herve G. Zeller
Herve G. Zeller
Laboratoire des Arbovirus, Institut Pasteur, Laboratoire de Zoolologie Medicale, Institut Francais de Recherche Scientifique pour le Developpement en Cooperation (ORSTOM), Institut Senegalais de Recherches Agricoles, Centre de Reference Organisation Mondiale de la Sante, et de Recherches sur les Arbovirus, Institut Pasteur, Dakar, Senegal
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Didier Fontenille
Didier Fontenille
Laboratoire des Arbovirus, Institut Pasteur, Laboratoire de Zoolologie Medicale, Institut Francais de Recherche Scientifique pour le Developpement en Cooperation (ORSTOM), Institut Senegalais de Recherches Agricoles, Centre de Reference Organisation Mondiale de la Sante, et de Recherches sur les Arbovirus, Institut Pasteur, Dakar, Senegal
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Moumouni Traore-Lamizana
Moumouni Traore-Lamizana
Laboratoire des Arbovirus, Institut Pasteur, Laboratoire de Zoolologie Medicale, Institut Francais de Recherche Scientifique pour le Developpement en Cooperation (ORSTOM), Institut Senegalais de Recherches Agricoles, Centre de Reference Organisation Mondiale de la Sante, et de Recherches sur les Arbovirus, Institut Pasteur, Dakar, Senegal
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Yaya Thiongane
Yaya Thiongane
Laboratoire des Arbovirus, Institut Pasteur, Laboratoire de Zoolologie Medicale, Institut Francais de Recherche Scientifique pour le Developpement en Cooperation (ORSTOM), Institut Senegalais de Recherches Agricoles, Centre de Reference Organisation Mondiale de la Sante, et de Recherches sur les Arbovirus, Institut Pasteur, Dakar, Senegal
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Jean-Pierre Digoutte
Jean-Pierre Digoutte
Laboratoire des Arbovirus, Institut Pasteur, Laboratoire de Zoolologie Medicale, Institut Francais de Recherche Scientifique pour le Developpement en Cooperation (ORSTOM), Institut Senegalais de Recherches Agricoles, Centre de Reference Organisation Mondiale de la Sante, et de Recherches sur les Arbovirus, Institut Pasteur, Dakar, Senegal
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In two areas of Senegal where previous evidence of Rift Valley fever (RVF) virus circulation was detected, Barkedji in the Sahelian bioclimatic zone and Kedougou in the Sudano-Guinean zone, a longitudinal study of the enzootic maintenance of RVF virus was undertaken from 1991 to 1993. Mosquitoes, sand flies, and ticks were collected and domestic ungulates were monitored with serologic surveys. Rift Valley fever virus was not isolated in Kedougou. In Barkedji, RVF virus was isolated from Aedes vexans and Ae. ochraceus mosquitoes collected in traps near ground pools and cattle droves and from one healthy sheep. Sand flies were not involved in the maintenance cycle. Seroconversions were recorded in three (1.9%) of 160 monitored sheep and goats. The interepizootic vectors appeared to belong to the Aedes subgenus Neomelaniconion in East Africa, and to the subgenus Aedimorphus in West Africa. Epizootics in East Africa are associated with an increase in rainfall. However, factors associated with epizootics remain unknown for West Africa.
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| Past two years | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 1083 | 321 | 16 |
| Full Text Views | 54 | 11 | 0 |
| PDF Downloads | 60 | 10 | 0 |