Financial consequences of the Dutch bluetongue serotype 8 epidemics of 2006 and 2007

Velthuis, A.G.J.; Saatkamp, H.W.; Mourits, M.C.M.; Koeijer, A.A. de; Elbers, A.R.W.

doi:10.1016/j.prevetmed.2009.11.007

Cited by 147 publications

(136 citation statements)

References 6 publications

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“…Abortions, stillbirths and severe congenital malformations were also reported (Herder et al, 2012;Van den Brom et al, 2012). These outbreaks have spread quickly throughout a large portion of the European Union and have caused considerable direct and indirect economic losses in the sheep and cattle industries, although the scale of these losses is difficult to assess (Saegerman et al, 2008;Velthuis et al, 2010;Conraths et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Orientation behaviour of Culicoides obsoletus (Diptera: Ceratopogonidae), a relevant virus vector in northern Europe, toward host-associated odorant cues

Zimmer

Verheggen

Haubruge

et al. 2015

Veterinary Parasitology

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a b s t r a c tSome Culicoides biting midge species (Diptera: Ceratopogonidae) are biological virus vectors worldwide and have recently been associated with outbreaks of important epizootic diseases such as bluetongue and Schmallenberg in northern Europe. These diseases, which affect domestic and wild ruminants, have caused considerable economic losses. Knowledge of host preferences of these biting midges -especially of the relevant vectors of arboviruses near farms, such as Culicoides obsoletus in northern Europe -is essential to understand pathogen transmission cycles and the epidemiology of associated diseases. This study aimed to determine host preferences of C. obsoletus using an in-field flight tunnel containing pairs of calf, sheep, chicken, and human hosts (and controls) and a laboratory two-choice bioassay containing volatile extracts of host skin (and controls). Behavioural responses of nulliparous C. obsoletus females in the in-field flight tunnel showed a preference for human (but also calf and sheep) hosts, probably due to their exhalation of greater quantities of carbon dioxide. The laboratory experiment revealed that volatile organic compounds released from the skin of chicken and sheep seemed to attract this species. Culicoides obsoletus, thus, seems to have a wide host range and to be particularly attracted by humans under field conditions. A better understanding of vector-host interaction could enable the development of control strategies against adult biting midges, by exploiting insect-repelling or -attractive semiochemicals. Volatile extracts of chicken and/or sheep skin could be used to identify volatile compounds attractive to C. obsoletus, which in turn could be used in baited traps.

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Section: Introductionmentioning

confidence: 99%

Orientation behaviour of Culicoides obsoletus (Diptera: Ceratopogonidae), a relevant virus vector in northern Europe, toward host-associated odorant cues

Zimmer

Verheggen

Haubruge

et al. 2015

Veterinary Parasitology

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“…The virus surprisingly managed to persist during the 2006-2007 winter period and re-emerged in May-June of 2007. During that year the virus spread to several additional European countries and affected over 55 000 holdings, resulting in economic losses totalling hundreds of millions of Euros (Maan et al, 2008;Velthuis et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Transplacental infection in goats experimentally infected with a European strain of bluetongue virus serotype 8

Coetzee

Stokstad

Myrmel

et al. 2013

The Veterinary Journal

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The capability of the current European strain of bluetongue virus serotype 8 (BTV-8) to cross the ruminant placenta has been established in experimental and field studies in both sheep and cattle. Sero-prevalence rates in goats in north-western Europe were high during the recent outbreak of BTV-8, however the capability of the virus to infect goats through the transplacental route has not been established. In the present study, four Saanen goats pregnant at 62 days of gestation were inoculated with the European strain of BTV-8, in order to investigate the capability of the virus to cross the caprine placenta. Infection of adult goats resulted in mild clinical signs, however gross lesions observed post mortem were more severe.

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“…The latter are associated with mortality, reduced milk production, weight losses and fertility and gestation problems and were calculated in the same way as Velthuis et al (2010). These cost categories together made up the total direct costs of the disease.…”

Section: Payoffsmentioning

confidence: 99%

“…The Directive stipulated the disease should be combatted and eradicated using control, monitoring, surveillance and restrictions on movements of susceptible animal species (European Council, 2000;. In detail, measures entailed diagnostics, mandatory indoor housing of ruminants, medical treatment of animals, treatment of stables and vehicles for animal transport with insecticides, extra testing of animals for export and movement restrictions (Velthuis et al, 2010). Nevertheless, many new outbreaks were reported after July 2007.…”

Section: Introductionmentioning

confidence: 99%

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Farmers’ willingness to invest in livestock disease control: the case of voluntary vaccination against bluetongue

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Financial consequences of the Dutch bluetongue serotype 8 epidemics of 2006 and 2007

Cited by 147 publications

References 6 publications

Orientation behaviour of Culicoides obsoletus (Diptera: Ceratopogonidae), a relevant virus vector in northern Europe, toward host-associated odorant cues

Orientation behaviour of Culicoides obsoletus (Diptera: Ceratopogonidae), a relevant virus vector in northern Europe, toward host-associated odorant cues

Transplacental infection in goats experimentally infected with a European strain of bluetongue virus serotype 8

Farmers’ willingness to invest in livestock disease control: the case of voluntary vaccination against bluetongue

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