So, there's been an active effort to reestablish the process of smallpox vaccination in case that's needed.

为了以防万一,现在正积极重建,能够制造天花疫苗的工艺进程

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