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

有一只寄生虫并不会造成危害。

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

目前市场上的药物旨在杀死的寄生虫幼虫。

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

寄生在的寄生虫会吸走的营物质，尤其是铁营素。

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

目前在最大规模的遗传学研究中，科学家们识别出疟疾寄生虫几个基因突变。

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，科学家在肯尼亚有过这样的发现：相对于没有寄生虫的孩子，患有寄生虫病的儿童对蚊子有更强烈的吸引力。

Like if you have a parasite, you need an anti-parasitic medication.

比如，如果你有寄生虫，就需要服用抗寄生虫药物。

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

一旦进入，这些寄生虫可能难以杀死或控制。

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.

这些毛被认为是作为一种保护毛虫的方式而进化的，以抵御捕食者，也可能抵御那些想在毛虫产卵的寄生虫。