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© Pierre Gounon
Virus influenza purifié, agent de la grippe. Ce virus enveloppé possède un génome fragmenté : 8 segments d'ARN négatif protégés par une nucléocapside.
Publication : Bulletin de la Société de pathologie exotique (1990)

[Assessment of the risk of introduction to Tunisia of the Rift Valley fever virus by the mosquito Culex pipiens]

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Bulletin de la Société de pathologie exotique (1990) - 23 Dec 2010

Krida G, Diancourt L, Bouattour A, Rhim A, Chermiti B, Failloux AB

Link to Pubmed [PMID] – 21184293

Bull Soc Pathol Exot 2011 Oct;104(4):250-9

The mosquito Culex pipiens has been involved as vector of the West Nile virus in Tunisia. Its bio-ecological characteristics in combination with some environmental factors have favoured the emergence of this virus in a West-Nile free zone. This leads to question about the potential risk of introducing another arbovirus, the Rift Valley fever (RVF) virus, in Tunisia from neighbouring countries where RVF circulates. In this study, we have evaluated the vector competence of different populations of Cx. pipiens towards two strains of RVF virus, the virulent ZH548 and the avirulent Clone 13 by experimental infections and the genetic differentiation of these populations of Cx. pipiens using four microsatellite loci. We found disseminated infection rates ranging from 0% to 14.7% and a high genetic differentiation among populations without any geographical pattern (no isolation by distance). Thus, although Cx. pipiens is able to sustain an amplification of RVF virus, viral dissemination through mosquito dispersal would be unlikely. However, as RVF is an emerging disease transmitted by several other potential mosquito species (e.g. Ochlerotatus caspius), attention should be maintained to survey livestock and mosquitoes in Tunisia.

http://www.ncbi.nlm.nih.gov/pubmed/21184293