epidemiological surveillance of bluetongue virus serotypes 1, 4 and 8 in spanish ibex (capra pyrenaica hispanica) in southern spain.a cross-sectional study was carried out to assess the prevalence and circulation of bluetongue virus (btv) in spanish ibexes (capra pyrenaica hispanica). a total of 770 sera samples, 380 blood samples and 34 spleen samples were collected between 2006 and 2009 in andalusia (southern spain), a region and time period with a wide circulation of btv in livestock. thirty-one out of 770 (4.0%; ci(95%): 2.6-5.4) sera samples analyzed by elisa showed antibodies against btv. twenty-four out of 31 seroposi ...201021111545
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