European surveillance for West Nile virus in mosquito populations - PubMed (original) (raw)

Review

. 2013 Oct 11;10(10):4869-95.

doi: 10.3390/ijerph10104869.

Giovanni Savini, Anna Papa, Jordi Figuerola, Martin H Groschup, Helge Kampen, Jolyon Medlock, Alexander Vaux, Anthony J Wilson, Doreen Werner, Hanna Jöst, Maria Goffredo, Gioia Capelli, Valentina Federici, Mauro Tonolla, Nicola Patocchi, Eleonora Flacio, Jasmine Portmann, Anya Rossi-Pedruzzi, Spiros Mourelatos, Santiago Ruiz, Ana Vázquez, Mattia Calzolari, Paolo Bonilauri, Michele Dottori, Francis Schaffner, Alexander Mathis, Nicholas Johnson

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Review

European surveillance for West Nile virus in mosquito populations

Olivier Engler et al. Int J Environ Res Public Health. 2013.

Abstract

A wide range of arthropod-borne viruses threaten both human and animal health either through their presence in Europe or through risk of introduction. Prominent among these is West Nile virus (WNV), primarily an avian virus, which has caused multiple outbreaks associated with human and equine mortality. Endemic outbreaks of West Nile fever have been reported in Italy, Greece, France, Romania, Hungary, Russia and Spain, with further spread expected. Most outbreaks in Western Europe have been due to infection with WNV Lineage 1. In Eastern Europe WNV Lineage 2 has been responsible for human and bird mortality, particularly in Greece, which has experienced extensive outbreaks over three consecutive years. Italy has experienced co-circulation with both virus lineages. The ability to manage this threat in a cost-effective way is dependent on early detection. Targeted surveillance for pathogens within mosquito populations offers the ability to detect viruses prior to their emergence in livestock, equine species or human populations. In addition, it can establish a baseline of mosquito-borne virus activity and allow monitoring of change to this over time. Early detection offers the opportunity to raise disease awareness, initiate vector control and preventative vaccination, now available for horses, and encourage personal protection against mosquito bites. This would have major benefits through financial savings and reduction in equid morbidity/mortality. However, effective surveillance that predicts virus outbreaks is challenged by a range of factors including limited resources, variation in mosquito capture rates (too few or too many), difficulties in mosquito identification, often reliant on specialist entomologists, and the sensitive, rapid detection of viruses in mosquito pools. Surveillance for WNV and other arboviruses within mosquito populations varies between European countries in the extent and focus of the surveillance. This study reviews the current status of WNV in mosquito populations across Europe and how this is informing our understanding of virus epidemiology. Key findings such as detection of virus, presence of vector species and invasive mosquito species are summarized, and some of the difficulties encountered when applying a cost-effective surveillance programme are highlighted.

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Figures

Figure 1

Figure 1

Map showing areas where WNV infected mosquitoes have been trapped in Italy according to the Italian entomological surveillance plan for West Nile disease.

Figure 2

Figure 2

Map of the regions of Switzerland enrolled in the mosquito surveillance programme in 2012. Sampling sites are indicated by red points in the lower panels.

Figure 3

Figure 3

Map showing the locations of stationary mosquito traps within Germany. Traps operated by the German FLI/ZALF consortium are indicated in red, traps operated by the KABS/BNI consortium are indicated in blue (see text for details).

References

    1. Jupp P.G. The ecology of West Nile virus in South Africa and the occurence of outbreaks in humans. Ann. N. Y. Acad. Sci. 2001;951:143–152. doi: 10.1111/j.1749-6632.2001.tb02692.x. -DOI -PubMed
    1. Reisen W.K., Hayes C.G., Azra K., Niaz S., Mahmood F., Parveen T., Boreham P.F. West nile virus in pakistan. II. Entomological studies at Changa Manga national forest, Punjab province. Trans. Roy. Soc. Trop. Med. Hyg. 1982;76:437–448. doi: 10.1016/0035-9203(82)90131-6. -DOI -PubMed
    1. Mackenzie J.S., Lindsay M.D., Coelen R.J., Broom A.K., Hall R.A., Smith D.W. Arboviruses causing human disease in the Australasian zoogeographic region. Arch. Virol. 1994;136:447–467. doi: 10.1007/BF01321074. -DOI -PubMed
    1. Ciccozzi M., Peletto S., Cella E., Giovanetti M., Lai A., Gabanelli E., Acutis P.L., Modesto P., Rezzam G., Platonov A.E., et al. Epidemiological history and phylogeography of West Nile virus lineage 2. Infect. Gen. Evol. 2013;17:46–50. -PubMed
    1. Bakonyi T., Ivanics E., Erdélyi K., Ursu K., Ferenczi E., Weissenböck H., Nowotny N. Lineage 1 and 2 strains of encephalitis West Nile virus, central Europe. Emerg. Infect. Dis. 2006;12:618–623. doi: 10.3201/eid1204.051379. -DOI -PMC -PubMed

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