广播电视英语短句 第 232 课：混合药物治疗-4

The World Health Organization estimates that about sixty thousand people are currently infected with the disease. 世界卫生组织估计目前差不多有 6000 人感染些种疾病。

It develops in two different forms. 该病发展为两种不同的症状。

Trypanosoma gambiense is responsible for ninety percent of the reported cases of sleeping sickness. 90% 已报道的昏睡病病例感染了 冈比亚锥虫 。

People infected with this form may develop the disease over many years without any major symptoms. 感染此病状的病人早些年无任何主要症状。

The disease develops more quickly over a few weeks or months in people infected with trypanosoma rhodesiense. 感染罗得西亚锥虫的病人会在几周或几个月内迅速病发。