The virus has been reported to cause lethal disease, and genomic testing suggests that shrews may be the natural host for the virus.

这种病毒有引发致命疾病的记录。此外，基因组测试表明，鼩鼱可能是这种病毒的天然宿主。

Well, the first thing we needed to understand was how this virus actually works in its natural host -- in the bats.

好吧，我们首先需要了解的是这种病毒实际上是如何在其天然宿主——蝙蝠体内发挥作用的。

In the serosurvey of 25 species of animals, the study found that shrew had the highest seropositivity ratio of 27%, which was presumed to be the natural host of the virus.

在对 25 种动物的血清调查中，研究发现，鼩鼱的血清阳性率最高，为 27%，被推定为病毒的天然宿主。