尽管还无法确定病毒KoRV（考拉反转录病毒）是怎么传播的，但专家已经发现，这种病毒能够自我整合入动物的DNA，可随着基因遗传给后代，直接接触也会感染。

KoRV (koala retrovirus) integrates itself into the animalsâ DNA, and may be passed on genetically as well as through direct infection, experts have found, though they are unsure how it is spread.

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如果病毒像生物那样生长，它们将搜索被感染系统中的其他病毒，并与他们交换代码，然后繁殖全新的后代。

As the viruses grow more lifelike, they could search for other viruses in the infected system with which they can swap code and create new offspring.

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