Zeller H.G., Fontenille Didier, Traore-Lamizana Moumouni, Thiongane Y., Digoutte J.P. (1997). Enzootic activity of rift valley fever virus in Senegal. American Journal of Tropical Medicine and Hygiene, 56 (3), p. 265-272. ISSN 0002-9637.
Titre du document
Enzootic activity of rift valley fever virus in Senegal
American Journal of Tropical Medicine and Hygiene, 1997,
56 (3), p. 265-272 ISSN 0002-9637
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. RVF 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. (Résumé d'auteur)
Plan de classement
Epidémiologie des arbovirus [052CULARB03]
Descripteurs
ARBOVIROSE ; MOUSTIQUE ; VECTEUR ; EPIDEMIOLOGIE ; SEROLOGIE ; PREVALENCE ; AGENT PATHOGENE ; TROUPEAU ; ZONE CLIMATIQUE ; FIEVRE DE LA VALLEE DU RIFT ; EPIZOOTIE ; SURVEILLANCE EPIDEMIOLOGIQUE
