You can't go to school in this country, and in many countries, until you've had your prescribed set of vaccinations.

在我国,接种规定的疫苗之前,许多国家也一样,你都不能去上学

耶鲁公开课 - 生物医学工程探索课程节选

The question is "What happens after a vaccine is introduced into the body?"

问题在于,人体在接种疫苗后会发生什么样的变化

耶鲁公开课 - 生物医学工程探索课程节选

There are even some military personnel now who get immunized against smallpox in the event that when they're going into areas, they might be exposed when they're in combat areas.

现在有些军人甚至已经接种天花疫苗,以使他们在战场上,免受天花病毒的威胁

耶鲁公开课 - 生物医学工程探索课程节选

I was born before 1970, I got a smallpox vaccination.

我出生在一九七零年之前,我接种过天花疫苗

耶鲁公开课 - 生物医学工程探索课程节选

Yeah, so for example, you get exposed to-- before there was a vaccine your brother or sister had chickenpox, and so you got exposed to chickenpox naturally through your contact with them.

举个例子来说,如果你生活在这样的环境里,兄弟姐妹们还没接种疫苗就得了水痘,而你通过与他们相接触,在自然情况下接触到了水痘病毒

耶鲁公开课 - 生物医学工程探索课程节选

So you need hundreds of millions of doses, at least, and you need a way to distribute that around the world, and you need a way to keep track of who got sick and who didn't after they got vaccinated.

至少需要上亿支的剂量,还得有办法将疫苗运送到世界各地,你还要一种方法进行跟踪,在接种疫苗之后谁得病了和谁没得病

耶鲁公开课 - 生物医学工程探索课程节选