Most commonly, Leptospira gets into the host system via abrasions or cuts on the skin.

钩端螺旋体一般通过皮肤表面创口进入宿主体内。

Now the virus only needs to suppress or evade the host's immune system long enough to replicate to sufficient levels and infect more cells.

现在病毒只需压制或躲避宿主的免疫系统，一直繁殖到足够多的水平来感染更多的细胞。

But here's the catch: Go on a hatching spree, and the host's immune system is going to take notice, and kick all the worms out.

无节制地进行孵化，会引起宿主免疫系统的注意，然后将所有鞭虫清除出去。

As he and his colleagues report in Immunity, they have found a bacterium that induces its host's immune system to release compounds on which it can then feed.

正如他和他的同事在《免疫》杂志上报道的那样，他们发现了一种细菌，它可以诱导宿主的免疫系统释放出化合物，并以此为食。

Now the virus only needs to suppress or evade the host’s immune system long enough to replicate to sufficient levels and infect more cells.

现在病毒只需要足够长的时间来抑制或逃避宿主的免疫系统，以复制到足够的水平并感染更多的细胞。