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  • Title: Isolation and genetic analysis of bovine viral diarrhea virus from infected cattle in indiana.
    Author: Pogranichniy RM, Schnur ME, Raizman EA, Murphy DA, Negron M, Thacker HL.
    Journal: Vet Med Int; 2011; 2011():925910. PubMed ID: 21647344.
    Abstract:
    Species and biotype distribution was determined in 44 bovine viral diarrhea virus- (BVDV-) positive samples submitted to the Animal Disease Diagnostic Laboratory (ADDL) in Indiana during 2006-2008. BVDV RNA was detected in the 5'-untranslated region and N(pro) region using reverse transcriptase PCR followed by sequencing analysis of the PCR product. Additionally, cases were classified into one of six categories according to history and/or lesions: acute symptomatic, hemorrhagic, respiratory distress, reproductive, persistent infection (PI), and mucosal disease (MD). Of 44 BVDV-positive samples, 33 were noncytopathic (ncp), 10 were cytopathic (cp), and one presented both ncp and cp biotypes. Sequencing analysis demonstrated that all samples belonged to BVDV-1a, BVDV-1b, or BVDV-2. The most common isolate was ncp BVDV-1b, (44%) followed by ncp BVDV-2a (24%). Among the six categories, respiratory clinical signs were the most common (36%) followed by PI (25%) and MD (16%).
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