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