Archives of Virology

, Volume 158, Issue 10, pp 2175–2177 | Cite as

Culicoides sonorensis (Diptera: Ceratopogonidae) is not a competent vector of Cache Valley virus (family Bunyaviridae, genus Orthobunyavirus)

Brief Report

Abstract

We investigated the susceptibility of Culicoides sonorensis to Cache Valley virus (CVV) (family Bunyaviridae, genus Orthobunyavirus) infection and the potential that it could be a vector or site of virus reassortment. CVV is native to the New World and causes disease in livestock. Infected blood meals were fed to both a competent vector, Anophelesquadrimaculatus, and Culicoides sonorensis. All Anopheles mosquitoes were infected as expected, but only 21 % of the C. sonorensis insects were susceptible to infection. These appeared to present a midgut barrier, because virus persisted but did not disseminate. This means Culicoides sonorensis is not likely to be a vector of CVV but could be involved in viral reassortment. Schmallenberg virus (SBV) (family Bunyaviridae, genus Orthobunyavirus) was recently discovered in Europe and probably is a novel virus resulting from a reassortment of two orthobunyaviruses, and an ongoing epizootic in cattle and small ruminants has caused significant economic damage.

Keywords

Schmallenberg virus Cache Valley virus Culicoides sonorensis Vector competence 

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Copyright information

© Springer-Verlag Wien (outside the USA) 2013

Authors and Affiliations

  1. 1.US Air Force School of Aerospace Medicine PHRWright-Patterson AFBUSA
  2. 2.Wyoming State Veterinary LaboratoryUniversity of WyomingLaramieUSA

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