Prejudice is a social disease.

偏见是一种社会弊病。

I got a social disease!

我得了个社会病！

I have Social Disease.

我有社交病。

Juvenile delingquency is purely a social disease.

问题青年纯粹是一种社会疾病。

Leprosy is a chronic and consumptive social disease.

麻风是一种慢性消耗性的社会病。