The whole category of diarrheal diseases, caused by viruses called enteroviruses, where they, it infects your gut.

所有种类的腹泻,都是由肠道病毒引起的,它们感染了肠道

耶鲁公开课 - 生物医学工程探索课程节选

Your gut's unable to function in the normal way, and so you get severe diarrhea.

使肠道不能正常工作,这时人就得了严重的腹泻

耶鲁公开课 - 生物医学工程探索课程节选