脑膜炎奈瑟菌仅感染人类，不存在动物宿主。

Neisseria meningitidis only infects humans; there is no animal reservoir.

youdao

增加传染病传播的媒介、动物宿主以及模式和动态的知识。

To increase knowledge of vectors, animal reservoirs and the modes and dynamics of transmission of communicable diseases.

youdao

寄生虫载体，是节肢动物或其他无脊椎动物传播寄生虫从一个脊椎动物宿主到另一个。

A parasite vector is an arthropod or other invertebrate that transmits the parasite from one vertebrate host to another.

youdao

Otherwise you could have a squirrel host-- I'm using squirrels, because I think that's funnier than other animals to think of— but it could be any potential host, right?

否则松鼠就会变成宿主,我拿松鼠举例,是因为我觉得它比别的动物更有趣,但潜在宿主可以是任何动物,对吧

耶鲁公开课 - 生物医学工程探索课程节选