Cross-sectional study of bluetongue virus serotype 8 infection in South American camelids in Germany (2008/2009). 2012

Claudia Schulz, and Michael Eschbaumer, and Mario Ziller, and Regula Wäckerlin, and Martin Beer, and Matthias Gauly, and Christoph G Grevelding, and Bernd Hoffmann, and Christian Bauer
Institute of Parasitology, Justus Liebig University Giessen, Rudolf-Buchheim-Str. 2, 35392 Giessen, Germany. claudia.schulz@vetmed.uni-giessen.de

Bluetongue (BT) is a major disease of ruminant livestock that can have a substantial impact on income and animal welfare. In South American camelids (SAC), fatalities related to bluetongue virus (BTV) infection were reported in Germany and France during the recent BTV-8 and BTV-1 epizootics, which raised concern about the role of SAC in the epidemiology of BTV. Therefore, a large-scale serological and virological study was conducted in Germany from autumn 2008 to spring 2009. Risk factors associated with BTV infection were analysed by multiple logistic regression. These included age, species, gender and housing arrangements of SAC as well as the location of the herds and the presence of ruminants on farms.Altogether, 249 (14.3%) of 1742 SAC were found seropositive by BTV ELISA, and 43 (47.3%) of the 91 herds had at least one BTV-seropositive SAC. However, no BTV RNA was detected in any of the seropositive samples. Seroprevalence depended on the sampling region and probably on age, but not on any other analysed risk factors associated with BTV infection in ruminants. The highest seroprevalence was found in the west of Germany where the BTV-8 epizootic started in 2006. Recorded BTV-8 related disease and fatalities are discussed. Although the prevalence of BTV-8 antibodies was high in some regions, the virological results indicate that SAC play a negligible role in the epidemiology of this virus infection.

UI MeSH Term Description Entries
D008297 Male Males
D001819 Bluetongue A reovirus infection, chiefly of sheep, characterized by a swollen blue tongue, catarrhal inflammation of upper respiratory and gastrointestinal tracts, and often by inflammation of sensitive laminae of the feet and coronet. Blue Tongue,Tongue, Blue
D001820 Bluetongue virus The type species of ORBIVIRUS causing a serious disease in sheep, especially lambs. It may also infect wild ruminants and other domestic animals. Ovine Catarrhal Fever Virus,Blue Tongue Virus,Blue Tongue Viruses,Bluetongue Viruses
D002161 Camelids, New World Camelidae of the Americas. The extant species are those originating from South America and include alpacas, llamas, guanicos, and vicunas. Alpacas,Guanacos,Llamas,Lama glama,Lama glama guanicoe,Lama guanicoe,Lama pacos,Vicugna pacos,Vicugna vicugna,Vicunas,Alpaca,Camelid, New World,Guanaco,Llama,New World Camelid,New World Camelids,Vicuna
D003430 Cross-Sectional Studies Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time. Disease Frequency Surveys,Prevalence Studies,Analysis, Cross-Sectional,Cross Sectional Analysis,Cross-Sectional Survey,Surveys, Disease Frequency,Analyses, Cross Sectional,Analyses, Cross-Sectional,Analysis, Cross Sectional,Cross Sectional Analyses,Cross Sectional Studies,Cross Sectional Survey,Cross-Sectional Analyses,Cross-Sectional Analysis,Cross-Sectional Study,Cross-Sectional Surveys,Disease Frequency Survey,Prevalence Study,Studies, Cross-Sectional,Studies, Prevalence,Study, Cross-Sectional,Study, Prevalence,Survey, Cross-Sectional,Survey, Disease Frequency,Surveys, Cross-Sectional
D004797 Enzyme-Linked Immunosorbent Assay An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed. ELISA,Assay, Enzyme-Linked Immunosorbent,Assays, Enzyme-Linked Immunosorbent,Enzyme Linked Immunosorbent Assay,Enzyme-Linked Immunosorbent Assays,Immunosorbent Assay, Enzyme-Linked,Immunosorbent Assays, Enzyme-Linked
D005260 Female Females
D005858 Germany A country in central Europe, bordering the Baltic Sea and the North Sea, between the Netherlands and Poland, south of Denmark. The capital is Berlin.
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D016036 Seroepidemiologic Studies EPIDEMIOLOGIC STUDIES based on the detection through serological testing of characteristic change in the serum level of specific ANTIBODIES. Latent subclinical infections and carrier states can thus be detected in addition to clinically overt cases. Seroprevalence,Seroepidemiologic Study,Seroepidemiological Study,Studies, Seroepidemiologic,Study, Seroepidemiologic,Seroepidemiological Studies,Seroprevalences,Studies, Seroepidemiological,Study, Seroepidemiological

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