Multiple Genome Segments Determine Virulence of Bluetongue Virus Serotype 8
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چکیده
منابع مشابه
Multiple Genome Segments Determine Virulence of Bluetongue Virus Serotype 8
UNLABELLED Bluetongue virus (BTV) causes bluetongue, a major hemorrhagic disease of ruminants. In order to investigate the molecular determinants of BTV virulence, we used a BTV8 strain minimally passaged in tissue culture (termed BTV8L in this study) and a derivative strain passaged extensively in tissue culture (BTV8H) in in vitro and in vivo studies. BTV8L was pathogenic in both IFNAR(-/-) m...
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In Germany, bluetongue disease had not been reported before 2006. During August 2006-August 2008, >24,000 bluetongue virus serotype 8 infections were reported, most (20,635) in 2007. In 2006 and 2007, respectively, case-fatality rates were 6.4% and 13.1% for cattle and 37.5% and 41.5% for sheep. Vaccination in 2008 decreased cases.
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To identify the vectors of bluetongue virus (BTV) in Germany, we monitored Culicoides spp. biting midges during April 2007-May 2008. Molecular characterization of batches of midges that tested positive for BTV suggests C. obsoletus sensu stricto as a relevant vector of bluetongue disease in central Europe.
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The effect of a superinfection with bluetongue virus serotype 1 (BTV1) was evaluated on two groups of four calves. One group received a commercial inactivated BTV serotype 8 (BTV8) vaccine. This group and the non-vaccinated group of calves were challenged twice (4 months apart) with the European BTV8 strain isolated during the 2006-2007 epidemics. Calves were then infected with a BTV1 inoculum ...
متن کاملComplete Genome Sequence of Bluetongue Virus Serotype 8, Which Reemerged in France in August 2015.
We announce here the complete genome sequence (coding and noncoding) of the bluetongue virus (BTV) serotype 8, isolated from a ram in Allier department, France, 2015. Sequence analysis confirms the reemergence of the BTV-8 strain that previously circulated in France until 2009 and other European countries until 2010.
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 2015
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.00395-15