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Article Dans Une Revue Tropical Medicine and International Health Année : 2006

Rift Valley fever in West Africa: the role of space in endemicity

Résumé

Rift Valley fever is an endemic vector-borne disease in West Africa, which mainly affects domestic ruminants and occasionally humans. The aetiological mechanisms of its endemicity remain under debate. We used a simple spatially explicit model to assess the possibility of endemicity without wild animals providing a permanent virus reservoir. Our model takes into account the vertical transmission in some mosquito species, the rainfall-driven emergence of their eggs and local and distant contacts because of herd migration. Endemicity without such a permanent virus reservoir would be impossible in a single site except when there is a strictly periodic rainfall pattern; but it would be possible when there are herd movements and sufficient inter-site variability in rainfall, which drives mosquito emergence.

Dates et versions

halsde-00340977 , version 1 (24-11-2008)

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Citer

Charly Favier, Karine Chalvet-Monfray, Philippe Sabatier, Renaud Lancelot, Didier Fontenille, et al.. Rift Valley fever in West Africa: the role of space in endemicity. Tropical Medicine and International Health, 2006, 11 (12), pp.1878-1888. ⟨10.1111/j.1365-3156.2006.01746.x⟩. ⟨halsde-00340977⟩
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