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La fiebre del Rift Valley en África Occidental: el papel del espacio en la endemicidad
Author(s) -
Favier Charly,
ChalvetMonfray Karine,
Sabatier Philippe,
Lancelot Renaud,
Fontenille Didier,
Dubois Marc A.
Publication year - 2006
Publication title -
tropical medicine and international health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.056
H-Index - 114
eISSN - 1365-3156
pISSN - 1360-2276
DOI - 10.1111/j.1365-3156.2006.01746.x
Subject(s) - rift valley fever , rift valley , vector (molecular biology) , geography , rift , herd , arbovirus , ecology , transmission (telecommunications) , phlebovirus , outbreak , geology , biology , paleontology , virology , bunyaviridae , virus , tectonics , recombinant dna , biochemistry , engineering , gene , electrical engineering
Summary 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.