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1·On the other hand, rainfall increased in the interior of western Africa, and the northern limit of the tsetse fly, an insect fatal to cattle, moved south.

另一方面，西非内陆的降雨量增加，采采蝇活动区域的北部边界向南移动——一种对牛致命的昆虫。

2·The tsetse fly is a bearer of sleeping sickness.

采采蝇为传染昏睡病的媒介。

3·The fatal infection begins with the bite of a tsetse fly.

昏睡症的致命感染始于采采蝇的一叮。

4·Tsetse flies are found just in sub-Saharan Africa though only certain species transmit the disease.

采采蝇仅在南撒哈拉非洲存在，但只有某些种类的采采蝇会传播该病。

5·The disease, transmitted mainly by tsetse flies, is prevalent in 37 countries among the poorest of the world.

这一疾病主要是通过采采蝇传播，在全世界最贫困的37个国家中流行。

6·It is spread by the bite of an infected tsetse fly (Glossina Genus), a species native to the African continent.

它通过非洲大陆当地特有的物种即受感染的采采蝇(舌蝇属)的叮咬传播。

7·It is spread by the bite of the tsetse fly, which transfers the organism from alternate host such as the cow.

经由采采蝇叮咬，将微生物从像牛这些宿主传入人体。

8·The disease is caused by the trypanosoma parasite. It is spread to humans through the bite of infected tsetse flies.

这种疾病由于锥体寄生虫引发，它是通过被感染的采采蝇叮咬传染给人类的。

9·For reasons that are so far unexplained, there are many regions where tsetse flies are found, but sleeping sickness is not.

出于迄今未得到解释的原因，在存在采采蝇的许多地区并未发现昏睡病。

10·Sleeping sickness occurs only in 36 sub-Saharan Africa countries where there are tsetse flies that can transmit the disease.

昏睡病仅发生在存在可传播该病的采采蝇的36个南撒哈拉非洲国家。

采采蝇

1·They are transmitted to humans by tsetse fly (Glossina genus) bites which have acquired their infection from human beings or from animals harbouring the human pathogenic parasites.

它们通过被携带人类致病寄生虫的人类或动物感染的采采蝇(舌蝇属)叮咬传播给人类。