China stopped the disease by ordering people in villages to use this kind of salt.

中国求村民使用这种盐来阻止病。

So heartworm disease. What is it?

心病这是什么病？

But in that era, there was so much heartworm disease.

但在那个年代，心病非常普遍。

For example, last year China and Egypt announced the elimination of lymphatic filariasis, a disease that currently disables some 40 million people.

例如，去年中国埃及宣布已消灭淋巴病，这一疾病目前已使约四千万人成为残疾。

Filariasis happens when one of these nematodes gets in the lymphatic system and causes a bit of fibrosis, which creates a physical blockage that obstructs the normal flow of lymph.

当这些线进入淋巴系统，并引起轻微的纤维化后，就会导病，进而造成物理性的阻塞，阻碍淋巴的正常流动。

One of the most common global causes of lymphedema is filariasis, an infection with nematode parasites, which are tiny worms; the most common species are: Wuchereria bancrofti, Brugia malayi, and Brugia timori.

病是淋巴水肿在全球范围内最普遍的病因，为线类寄生的感染所；最常见的物种有班氏吴策线、马来布鲁与帝汶布鲁。