Since 1999, Bluetongue (BT) has been spreading from the southern and eastern Mediterranean towards northern Europe. Between 2000 and 2004, foci were also observed in Corsica. Vast vaccination campaigns subsequently overcame the disease, which is transmitted to sheep by biting midges of the genus Culicoides.
As Emmanuel Camus, Director of CIRAD's Animal Production and Veterinary Medicine Department, explains: "global warming is favouring the arrival of diseases previously seen as exotic". He adds "we also need to cope with the appearance of different strains serotypes) of the Bluetongue vieus, which means using specific vaccines".
CIRAD is the national reference laboratory for the disease, and will be analysing samples taken by veterinary services from sheep and cattle on 60 farms in six of the départements most concerned (Moselle, Meurthe et Moselle, Meuse, Ardennes, Aisne and Nord), and will be trapping vector insects in those areas.
It is also carrying out research, primarily on:
- molecular characterization of vector insects: this will enable the precise identification of species in terms of morphologically indistinguishable groups or complexes and characterization of their reproduction sites, since it is impossible to identify species at the larval stage;
- the development of a new recombinant vaccine effective on all serotypes (in partnership with AFSSA and INRA);
- assessing Bluetongue serological diagnostic kits;
- spatial modelling of the zones propitious to vectors and dynamic modelling of viral infection so as to pinpoint the zones to be monitored in continental France. Several models are currently being developed and evaluated;
- application of the risk evaluation methodology concerning introduction of the virus into disease-free zones through commercial animal movements.
CIRAD is also coordinator of the European Med_Reo_Net project on Bluetongue and another disease caused by a similar virus: African horse sickness. The project, which involves 17 countries, will be launched in Autumn 2006.* AFSSA , Agence française de sécurité sanitaire des aliments EID-Méditerranée, Entente interdépartementale pour la démoustification du littoral méditerranéen
ULP, Université Louis Pasteur, Strasbourg
Helen Burford | alfa
Energy crop production on conservation lands may not boost greenhouse gases
13.03.2017 | Penn State
How nature creates forest diversity
07.03.2017 | International Institute for Applied Systems Analysis (IIASA)
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
23.03.2017 | Life Sciences
23.03.2017 | Power and Electrical Engineering
23.03.2017 | Earth Sciences