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Phenotypic and Genotypic Characterization of West Nile Virus Isolate 2004Hou3

机译:西尼罗河病毒2004Hou3的表型和基因型特征

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摘要

West Nile virus (WNV) is an arbovirus with important public health implications globally. This study characterizes a viral isolate, 2004Hou3, in comparison with the NY99 strain from the original WNV outbreak in New York, USA. NextGen sequencing was used to compare the viral isolates genetically, while wild-type C57/BL6 mice were used to compare pathogenicity and viral persistence. Significant differences in survival and clinical presentations were noted, with minor genetic variations between the two strains potentially offering an explanation. One notable difference is that 5 of 35 mice infected with the 2004Hou3 strain developed hind limb flaccid paralysis, suggesting its possible use as a small animal pathogenesis model for this clinical characteristic often observed in human WN neuroinvasive disease patients but not reported in other animal models of infection. Overall, this study suggests that 2004Hou3 is a less pathogenic strain with potential for use in long-term outcome studies using small animal models.
机译:西尼罗河病毒(WNV)是一种虫媒病毒,在全球具有重要的公共卫生意义。这项研究的特征是与来自美国纽约的原始WNV爆发的NY99株相比,一种病毒分离株2004Hou3。 NextGen测序用于遗传比较病毒分离株,而野生型C57 / BL6小鼠用于比较致病性和病毒持久性。注意到存活率和临床表现存在显着差异,两种菌株之间的微小遗传变异可能提供了解释。一个显着的差异是,感染2004Hou3株的35只小鼠中有5只出现后肢弛缓性麻痹,这表明它有可能用作这种临床特征的小型动物发病机制模型,这种模型通常在人类WN神经侵袭性疾病患者中观察到,但在其他动物模型中未见报道感染。总体而言,这项研究表明2004Hou3是一种病原性较低的菌株,具有使用小动物模型进行长期结果研究的潜力。

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