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Towards understanding bluetongue outbreaks
August 15, 2008A recent article published in Virology (www.elsevier.com/locate/yviro), reports the identification of a bluetongue virus strain that caused the northern European Bluetongue outbreak in 2006. Comparison of the virus strain with the sequences of other previously isolated strains showed that it originated in sub-Saharan Africa, rather than from vaccine strains or strains circulating in southern Europe.
Bluetongue (BT) disease or catarrhal fever is a non-contagious, insect borne viral disease of ruminants, mainly sheep. It is characterized by high fever, excessive salivation, swelling of the head and neck which can lead to cyanosis of the tongue (after which the disease is named). BT is caused by the bluetongue virus (BTV) and due to its economic significance BTV has been the subject of extensive molecular, genetic and structural studies. The disease has been observed in Australia, the USA, Africa, the Middle East, Asia and southern Europe. Its occurrence is seasonal in the affected countries, subsiding when temperature drop and hard frosts kill the midges that transmit the disease. It has been spreading northward since the late 90s, perhaps as a result of global warming.
In August 2006, the record temperatures experienced in northern Europe coincided with the first outbreak of BT in the Netherlands, Belgium, Luxemburg, and much of Germany. In the article Peter Mertens and 24 co-authors from six different institutes describe the sequence analysis of the full genome of this BTV strain and compare it to other BTV strains (Virology, doi:10.1016/j.virol.2008.04.028). Their results indicate that despite the high levels of nucleotide identity with other European strains, it represents a new strain introduction, originating from sub-Saharan Africa.
"Such timely and increasingly important insights into the origins of emerging viruses will lead not only to an increased understanding of how viruses like BTV spread, but also to rational vaccine development", said Barbara Sherry, one of the Editors of Virology.
Elsevier
"Such timely and increasingly important insights into the origins of emerging viruses will lead not only to an increased understanding of how viruses like BTV spread, but also to rational vaccine development", said Barbara Sherry, one of the Editors of Virology.
Elsevier
Bluetongue Current Events and Bluetongue News RSSResearchers examine role of climate change in disease spread
Ever since scientists first proposed that our planet might be experiencing widespread climate change, concerns have been raised about its implications for the spread of arboviruses - viruses carried by arthropods such as mosquitoes, midges and ticks.
How does bluetongue virus survive through the winter?
In 2006, Bluetongue virus - which infects livestock - reached Northern Europe for the first time. Some people thought that the outbreak would be limited to that particular year, as winter was expected to kill off the midges that host and spread the disease, bringing the threat of infection to an end. In actuality, the disease escalated in the following year, spreading to the UK. So, how did the virus survive the winter?
Toll of climate change on world food supply could be worse than thought
Global agriculture, already predicted to be stressed by climate change in coming decades, could go into steep, unanticipated declines in some regions due to complications that scientists have so far inadequately considered, say three new scientific reports.
IAH at the BA Festival: bluetongue virus moves into Europe
After this summer¡¦s record temperatures, UK sheep could soon be at risk from a deadly virus that is spreading north throughout Europe. The effect of climate change on the distribution of infectious disease will be discussed today (Tuesday 09 September 2003) at the BA festival of Science. Bluetongue is on the OIE¡¦s "A" list of infectious diseases. Until recently most of Europe was protected from bluetongue by a natural boundary ¡V the climate. But the disease has killed over half a million sheep in southern Europe since 1998. Dr Philip Mellor of the Institute for Animal Health says, ¡§We have studied the spread of the insect carrier of bluetongue virus (BTV) from North
Institute for Animal Health at the BA: the changing world of animal disease
Where do new diseases come from and how do they spread? The Institute for Animal Health will address these questions at the BA Festival of Science on Tuesday 09 September. A press conference will be held at 1100 hrs in the Newton Building, University of Salford.
IAH appoints new Head of Epidemiology
The Institute for Animal Health is pleased to announce that Dr Matthew Baylis has been appointed as Head of the Division of Epidemiology. Dr Baylis will take charge of a re-structured division responsible for experimental epidemiology and mathematical modelling of a number of infectious diseases across the Institute's three laboratories at Compton, Edinburgh and Pirbright. Dr Baylis joined the Institute in 1993 as a postdoctoral researcher, and became a research group leader in 2000. During this time he has made a significant impact in the development of mathematical models to predict the spread of BSE, scrapie, bluetongue, and African horse sickness. IAH Director Professor Paul-Pierre Pasto
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Keeping Blue-Tongue Lizards by Australian Reptile Keepers Publications (Publisher) | |
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Blue-Tongue Skinks Spar Face-To-Face Photographic Poster Print, 24x18 by AllPosters.com AllPosters.com is the world's #1 seller of posters, prints, photographs, specialty products and framed art. We're dedicated to bringing our customers the best selection of high quality wall décor that is perfect for their home or office. Browse our catalog of over 300,000 items that include entertainment and specialty posters, decorative prints, and art reproductions. Whether you're looking for your favorite movie or music poster, a framed Monet reproduction, or a print of the Eiffel Tower you will find it at AllPosters.com. Visit our Amazon store today at www.amazon.com/allposters to find Special Offers and search by subject category or artist. AllPosters.com provides unmatched service with a 100% satisfaction guarantee. We ship internationally to over 80 countries. Decorate your... |
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Bluetongue and related orbiviruses: Proceedings of an international symposium held at the Asilomar Conference Center, Monterey, California, January 16-20, 1984 (Progress in clinical and biological research 178) by T. Lynwood Barber (Author), Michael M. Jochim (Author) | |
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Lethal bluetongue virus serotype 1 infection in llamas.(LETTERS)(Report): An article from: Emerging Infectious Diseases by Gilles Meyer (Author), Caroline Lacroux (Author), Sebastien Leger (Author), Sokunthea Top (Author), Katel Goyeau (Author), Martine Deplanche (Author), Mylene Lemaire (Author) This digital document is an article from Emerging Infectious Diseases, published by U.S. National Center for Infectious Diseases on April 1, 2009. The length of the article is 1293 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser. Citation Details Title: Lethal bluetongue virus serotype 1 infection in llamas.(LETTERS)(Report) Author: Gilles Meyer Publication: Emerging Infectious Diseases (Magazine/Journal) Date: April 1, 2009 Publisher: U.S. National Center for Infectious Diseases Volume: 15 Issue: 4 Page: 608(3) Article Type: Report Distributed by Gale, a part of Cengage... | |
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Bluetongue in Belgium, 2006.(DISPATCHES)(Author abstract)(Clinical report): An article from: Emerging Infectious Diseases by Jean-Francois Toussaint (Author), Corinne Sailleau (Author), Jan Mast (Author), Philippe Houdart (Author), Guy Czaplicki (Author), Lien Demeestere (Author), Frank VandenBussche (Author), Wesley van Dessel (Author), Nesya Goris (Author), Emmanuel Breard (Author), Lotfi Bounaadja (Author), Etienne Thiry (Author), Stephan Zientara (Author), Kris De Clercq (Author) This digital document is an article from Emerging Infectious Diseases, published by Thomson Gale on April 1, 2007. The length of the article is 1937 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. Citation Details Title: Bluetongue in Belgium, 2006.(DISPATCHES)(Author abstract)(Clinical report) Author: Jean-Francois Toussaint Publication: Emerging Infectious Diseases (Magazine/Journal) Date: April 1, 2007 Publisher: Thomson Gale Volume: 13 Issue: 4 Page: 614(3) Article Type: Author abstract, Clinical report Distributed by Thomson... | |
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Bluetongue (Biology of Animal Infections) by Peter Mertens (Editor), Matthew Baylis (Editor), Philip Mellor (Editor) The third volume in the Institute of Animal Health (IAH) Biology of Animal Infections Series, Bluetongue discusses one of the most economically important diseases of domesticated livestock. Affecting primarily sheep particularly the improved mutton and wool breeds, it is now endemic in Africa, India, the Middle and Far East, Australia and the Americas, and over the last six years has caused a series of outbreaks throughout the Mediterranean region and central Europe. Bluetongue represent a paradigm not only for the other orbiviruses (such as African horse sickness virus, which shares the same vector species) but also for other insect transmitted diseases, including those of humans. * The only single definitive work that provides both... |
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Genetic characterization of Toggenburg Orbivirus, a new bluetongue virus, from goats, Switzerland.(RESEARCH): An article from: Emerging Infectious Diseases by Martin A. Hofmann (Author), Sandra Renzullo (Author), Markus Mader (Author), Valerie Chaignat (Author), Gabriella Worwa (Author), Barbara Thuer (Author) This digital document is an article from Emerging Infectious Diseases, published by U.S. National Center for Infectious Diseases on December 1, 2008. The length of the article is 4468 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser. Citation Details Title: Genetic characterization of Toggenburg Orbivirus, a new bluetongue virus, from goats, Switzerland.(RESEARCH) Author: Martin A. Hofmann Publication: Emerging Infectious Diseases (Magazine/Journal) Date: December 1, 2008 Publisher: U.S. National Center for Infectious Diseases Volume: 14 Issue: 12 Page: 1855(7) Distributed by Gale, a part of Cengage... | |
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Bluetongue Viruses (Current Topics in Microbiology and Immunology) by P. Roy (Author), B. M. Gorman (Editor) | |
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Bluetongue, African Horse Sickness, and Related Orbiviruses: Proceedings of the Second International Symposium by Thomas E. Walton (Author), Bennie I. Osburn (Author) Bluetongue, African Horse Sickness, and Related Orbiviruses: Proceedings of the Second International Symposium provides the latest scientific information about this group of Orbiviruses, which are transmitted by species of Culicoides (biting midges) and are important causes of disease in domestic livestock and wildlife. Originally presented at the Second International Symposium on the Orbivirus held in Paris, France in June 1991, the book reviews the history and latest data on epizootiology; clinical syndromes and host responses; vector biology, competence, genetics, and capacity; molecular virology and genetics; and diagnostic procedures. The book covers regulatory issues associated with bluetongue, epizootic hemmorrhagic disease, African horse sickness, Ibaraki disease, and equine... |
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Habitat requirements of the endangered pygmy bluetongue lizard, Tiliqua adelaidensis [An article from: Biological Conservation] by N.J. Souter (Author), C.M. Bull (Author), M.R. Lethbridge (Author), Hutchinso (Author) This digital document is a journal article from Biological Conservation, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser. Description: The pygmy bluetongue lizard, Tiliqua adelaidensis, occupies spider burrows as home sites. It is an endangered species, known from only 19 small natural grassland sites in the mid-north of South Australia, all on privately owned land. Habitat requirements of the pygmy bluetongue lizard were investigated at four sites. Both within and between sites, lizards were more likely to be found in areas with a greater number of deep spider burrows. Areas where lizards were not found tended to lack these burrows. Strong... |
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