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Midge-hunting scientists tackle spread of devastating bluetongue virus
Date:8/7/2008

Scientists at the BBSRC-funded Institute for Animal Health (IAH) are stepping up the battle against the devastating and economically damaging bluetongue virus. By combining ingenious ways to trap and monitor midges with cutting edge computer modelling and weather predictions the IAH team are gaining an understanding of how the insects spread the disease so that they can improve surveillance methods and advise farmers how and when to protect their animals.

The scientists are collecting data on midge numbers and biting behaviour from midge-hunting expeditions in southern England. They incorporate this with meteorological data from Met Office colleagues to develop complex mathematical models that can be used to establish under what weather conditions the midges are mostly likely to be flying around and when they are most likely to be giving disease-spreading bites to farm animals. This will allow the team, led by Dr Simon Carpenter, to advise farmers when it is safest to move susceptible animals and also examine how stabling of animals can be used where logistically possible to reduce the chance of infectious midge bites. They will also use this data to establish best practice for use of insecticides and timing of vaccination of animals against this economically important and difficult to control disease.

Lead researcher Dr Simon Carpenter said: "These experiments are vital it's about knowing your enemy. Last year, in northern Europe, bluetongue cost over 95 million in direct losses alone. And while indirect losses in the UK last year were considerable, we have yet to experience the full effects of a BTV outbreak as has been seen on the continent. A major 2008 outbreak could bring huge hardship both to directly affected farmers and, if vaccination coverage is poor, to those living in neighbouring movement restriction zones. Hence it is vital that, firstly, as many farmers vaccinate their stock as possible and secondly, we collect basic data
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Contact: Nancy Mendoza
press.office@bbsrc.ac.uk
44-017-934-13355
Biotechnology and Biological Sciences Research Council
Source:Eurekalert

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