Abstract：
Sedoreoviridae is a family of viruses belonging to the order Reovirales and comprises six genera, two of which, Orbivirus and Seadornavirus, contain arboviruses that cause disease in humans and livestock. Areas such as Yunnan Province in southwestern China, have high arboviral activity due in part to warm and wet summers, which support high populations of biting flies such as mosquitoes and Culicoides. Three viral isolates previously obtained from Culicoides collected at cattle farms in Shizong County of Yunnan Province, China, between 2019 and 2020 were completely sequenced and identified as Banna virus (BAV) genotype A of Seadornavirus and serotypes 1 and 7 of epizootic hemorrhagic disease virus (EHDV) of Orbivirus. These results suggest that Culicoidestainanus and C. orientalis are potential vectors of BAV and EHDV, respectively, and represent the first association of a BAV with C. tainanus and of an arbovirus with C. orientalis. Analysis using VP9 generally agreed with the current groupings within this genus based on VP12, although the classification for some strains should be corrected. Furthermore, the placement of Kadipiro virus (KDV) and Liao ning virus (LNV) in Seadornavirus may need confirmation as phylogenetic analysis placed these viruses as sister to other species in the genus.
摘要：
Sedoreoviridae是属于Reovirales目的病毒家族，包括六个属，其中两个，Orbivirus和Seadornavirus,含有引起人类和牲畜疾病的虫媒病毒。中国西南部的云南省等地区，具有较高的虫媒病毒活性，部分原因是夏季温暖潮湿，它们支持大量的叮咬苍蝇，如蚊子和库利科德。以前从云南省师宗县养牛场收集的Culicoides中获得的三种病毒分离株，中国,在2019年至2020年之间进行了完全测序，并鉴定为Seadornavirus的Banna病毒（BAV）基因型A和Orbivirus的流行病出血性疾病病毒（EHDV）的血清型1和7。这些结果表明，Culicoidestainus和C.orientalis是BAV和EHDV的潜在载体，分别,和代表BAV与C.tainanus和虫媒病毒与定向梭菌的第一次关联。使用VP9的分析通常与基于VP12的该属内的当前分组一致，尽管应校正某些菌株的分类。此外，Kadipiro病毒（KDV）和辽宁病毒（LNV）在Seadornavirus中的位置可能需要确认，因为系统发育分析将这些病毒作为该属中其他物种的姐妹。
