Volume 90, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



West Nile virus (WN virus) is one of the most widespread arbovirus and exhibits a great genetic diversity with 8 lineages, at least 4 (1, 2, Koutango, and putative new) are present in Africa. In West Africa, and are considered as potential vectors for WN virus transmission in sylvatic or urban context. We analyzed the vector competence of these species from Senegal for African lineages and envelope proteins sequences of viral strains used. We showed that lineage 1 is transmitted by both , whereas the putative new lineage 8 is transmitted only by . Our findings suggest that genetic variability can affect vector competence and depend on mosquito. However, when considering the infective life rate, the mosquito population seems to be inefficient for WN virus transmission in the field and could explain the low impact of WN virus in Africa.


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  • Received : 11 Jul 2013
  • Accepted : 21 Jan 2014

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