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Characterization of the 13 cytopathic BVDV strains from mucosal disease cases from a single herd

机译:从单一群中的粘膜病变病例的13个细胞病变BVDV菌株的表征

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Bovine viral diarrhea virus (BVDV) is a positive single-stranded RNA virus belonging to the Pestivirus genus of the Flaviviridae family. BVDV has a wide host range that includes most ruminants. Noncytopathic (ncp) BVDV may establish lifelong persistent infections in calves following infection of the fetus between 40 and 120 days of gestation. Cytopathic (cp) BVDV strains arise from ncp strains via mutations. The most common cp mutations are insertions of RNA derived from either host or a duplicationof viral sequences into the region of the genome coding for the NS2/3 protein. Superinfection of a persistently infected animal with a cp virus can give rise to mucosal disease (MD), a condition that is invariably fatal.
机译:牛病毒腹泻病毒(BVDV)是属于黄病毒族家族的瘟病毒属的正链RNA病毒。 BVDV具有广泛的主机范围,包括大多数反刍动物。非骨盆(NCP)BVDV可以在妊娠40至120天的胎儿感染后确定犊牛的终身持续感染。通过突变从NCP菌株产生细胞病变(CP)BVDV菌株。最常见的CP突变是从宿主或病毒序列重复的RNA插入到NS2 / 3蛋白的基因组区域的区域中。具有CP病毒的持续受感染的动物的SuperInfection可以引起粘膜疾病(MD),这种病症总是致命的。

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