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West Nile virus serosurveillance in pigs, wild boars, and roe deer in Serbia.

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Affiliations

  • 1. Department of Biotechnology, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Madrid, Spain.
      Authors
    • Escribano-Romero E 1
    • Merino-Ramos T 1
    • Blázquez AB 1
    • Saiz JC 1
    (4 authors)
  • 2. Scientific Veterinary Institute "Novi Sad", Novi Sad, Serbia.
      Authors
    • Lupulović D 2
    • Lazić G 2
    • Lazić S 2
    • Petrović T 2
    (4 authors)

ORCIDs linked to this article

Veterinary Microbiology, 14 Feb 2015, 176(3-4):365-369
https://doi.org/10.1016/j.vetmic.2015.02.005 PMID: 25724332 

Abstract 

West Nile virus (WNV) is maintained in nature in an enzootic transmission cycle between birds and mosquitoes, but it also infects many other vertebrates, including humans and horses, in which it can induce severe neurological diseases; however, data about virus circulation in other mammals is scarce. WNV has a history of recent outbreaks in Europe, including Serbia, where it was identified for the first time in 2010 in mosquitoes and in 2012 in birds and humans, being responsible for over 300 confirmed human cases and 35 deaths there along 2013. To assess WNV circulation among mammals in the country, 688 samples obtained from 279 farm pigs, 318 wild boars, and 91 roe deer were investigated for the presence of antibodies to WNV by enzyme-linked immunosorbent assay (ELISA) and viral neutralization test (VNT), and the specificity of their reactivity was assayed against Usutu virus (USUV). ELISA-reactive sera were identified in 43 (15.4%) pigs, 56 (17.6%) wild boars, and 17 (18.7%) roe deer. Of these, 6 (14%), 33 (59%), and 4 (23.5%) respectively, neutralized WNV. One out of the 45 ELISA negative sera tested, from a roe deer, neutralized WNV. Cross-reactivity neutralization test indicated that all deer and pigs neutralizing sera were WNV specific, while in 5 (15.2%) of the wild boar samples the specificity could not be established. Four wild boar sera showed USUV specificity. All these data confirm the circulation of both flaviviruses in Serbia, and highlight the need for the implementation of global coordinated surveillance programs in the region.

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Read article at publisher's site: https://doi.org/10.1016/j.vetmic.2015.02.005

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Funding 

Funders who supported this work.

Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) (2)

Network of Animal Disease Infectiology and Research-European Union (1)

PLATESA (1)

Serbian Ministry of Education Science and Technological Development (MPNTR) (1)

Spanish Ministerio de Ciencia e Innovación, MICINN (1)