来自《耶鲁大学开放课程：生物医学工程探索第10集第10集》

You would have this initial response,

你对水痘病毒产生初始应答
now that initial response might

这种初始应答可能
be too slow to prevent you from getting chickenpox.

过于缓慢无法预防水痘
Right, but if you just got the primary exposure,

但这时你已经获得这样的初次免疫
wouldn't the secondary response automatically--

而因为你已经天然感染过该病毒
not a booster shot, just the secondary response,

那么在没有加强针的情况下
because you were exposed?

二次免疫是否无法自动发生
Yeah, so you're asking, if for example,

所以你会问举个例子来说
why do you need a booster of tetanus,

已经感染过破伤风杆菌的人
because if I get exposed to

为什么仍然需要接种破伤风疫苗
tetanus wouldn't I have this rapid response?

身体不是应该马上对该病菌做出应答吗
The answer is "Yes you would",

是的你的身体会马上做出应答