Medicine today is aimed at killing the baby worms in a person's body.

目前市场上的药物旨杀死体内的寄虫幼虫。

One worm in a person's body does not do damage.

体内有一只寄虫并不会造成危害。

A parasite living in a person takes nutrients away from the person, especially the nutrient iron.

寄体内的寄虫会吸走体内的养物质，尤其养素。

Now in the largest genetics study to date, scientists have identified several mutations on genes in the Malaria parasites.

目前最大规模的遗传学研究中，科学家们识别出疟疾寄虫体内几个基因突变。

Once inside the body, the parasites can be difficult to kill or control.

一旦进入体内，这些寄虫可能难以杀死或控制。

A decade ago, scientists found that Kenyan kids infected with plasmodium were more attractive to mosquitos than were kids who were parasite-free.

十年前，科学家肯尼亚有过这样的发现：相对于体内没有寄虫的孩子，患有寄虫病的儿童对蚊子有更强烈的吸引力。

Those hairs are thought to have evolved as a way to protect the caterpillars against predators and maybe against parasitoids that wanna lay their eggs inside the caterpillar's body.

这些毛被认为作为一种保护毛虫的方式而进化的，以抵御捕食者，也可能抵御那些想毛虫体内产卵的寄虫。