初步调研后的结论表示，这些病症并非季节性流感所致，而是因为一种由猪、鸟、人类病毒组成的全新杂交病毒链。
After preliminary investigations, it was concluded this month that the cause is not seasonal influenza but rather an entirely new hybrid strain composed of pig, bird and human viruses.
几年前，研究人员发现了一种常见的人类病毒病原体和肥胖之间的联系，并由此创造出专业术语“infectobesity”。
The term “infectobesity” was coined several years ago by researchers who discovered a link between a common human viral pathogen and obesity.
对一种动物病毒而言，能够使其更容易地在人与人之间传播的一种方式是与人类病毒结合。
One way for an animal virus to become able to pass easily from person to person is to combine with a human virus.
作为一名兽医没什么错，但是，如我们曾指出的，艾滋病病毒是一种人类病毒。
Now there is nothing wrong with being a vet but, as we have pointed out, the AIDS virus is a human virus.
大多数致命的流感病毒株在动物病毒与一种已存在的人类病毒结合的时候产生。
Most deadly flu strains emerge when an animal virus combines with an existing human virus.
然而，在研究了基因数据之后，病毒学家认为1918年的病毒一开始是一种纯的禽类病毒株，一些变异使得它可以轻易感染人类宿主。
After studying the genetic data, however, virologists concluded that the 1918 virus started out as a pure avian strain. A handful of mutations had enabled it to easily infect human hosts.
然而，在研究了基因数据之后，病毒学家认为1918年的病毒一开始是一种纯的禽类病毒株，一些变异使得它可以轻易感染人类宿主。
After studying the genetic data, however, virologists concluded that the 1918 virus started out as a pure avian strain. A handful of mutations had enabled it to easily infect human hosts.
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