To combat filariasis , health workers usually prescribe dec tablets .
为了治疗丝虫病，卫生工作者通常会使用dec片剂。
Lymphatic filariasis isn 't limited to guyana .
淋巴丝虫病并不仅仅只限于圭亚那。
Filariasis is difficult to treat , but easy to prevent .
丝虫病很难医治，但是很容易预防。
The goal , as outlined by the world health assembly in 1997 , is to eliminate lymphatic filariasis by 2020 - no easy feat given that the disease persists in some of the most isolated and impoverished regions of the world .
