The only factor that prevented horses from spreading beyond West Africa was trypanosome diseases borne by tsetse flies.

阻止马传播到西非以外的唯一因素是采采蝇传播的虫病。

Guinea pigs may have contributed a trypanosome infection like Chagas' disease or leishmaniasis to our catalog of woes, but that's uncertain.

豚鼠可能是虫感染的罪魁祸首，比如虫病或利什曼病，但是不确定的。

Similarly, the spread southward of Fertile Crescent domestic animals through Africa was stopped or slowed by climate and disease, especially by trypanosome diseases carried by tsetse flies.

同样，气候和疾病，特别是采采蝇携带的虫病，阻止或减缓了新月沃地家畜通过非洲向的传播。

Their analysis, just published in plos Neglected Tropical Diseases, revealed an oil which proved 30% more effective at killing trypanosome parasites than did diminazene aceturate, the standard anti-trypanosomal drug.

他们的分析结果最近刚在《公共科学图书馆·被忽视的热带疾病》杂志上发表，结果显示他们发现了一种油，种油已被验证其杀死虫寄生虫的效果比标准的抗虫药物乙酰氨基苯酯要高出30%。