Archives of Virology

, Volume 158, Issue 10, pp 2175–2177

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

Brief Report

DOI: 10.1007/s00705-013-1715-6

Cite this article as:
Reeves, W.K. & Miller, M.M. Arch Virol (2013) 158: 2175. doi:10.1007/s00705-013-1715-6


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.


Schmallenberg virus Cache Valley virus Culicoides sonorensis Vector competence 

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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