Also, the vaccines against polio are not as effective as the smallpox vaccine, which was so powerful that a single vaccination protected almost everyone.

同时，抵抗小儿麻痹症病毒的疫苗的功效没有像天花疫苗那么有效，天花疫苗非常有效，以至于它只需要打一针就可以保护一个人不受侵害。

youdao

The vaccinia virus is a non-dangerous virus used in the smallpox vaccine because it is related to the variola virus, which is the agent of smallpox.

痘苗病毒使用在牛痘苗时是无害的，因为它与作为传播天花媒介物的天花病毒相关。

youdao

The reports included a detailed review of the safety of smallpox vaccine based on historical data as well as recent experience, particularly in the United States.

这两份报告包括了一份详尽的，主要以美国的历史资料和近期经验为依据的有关天花疫苗安全性的综述。

youdao

There's no company that's making smallpox vaccine anymore because there's no reason to make smallpox vaccine, because nobody would buy it, right?

没有公司还生产天花疫苗,因为没有人购买天花疫苗,因此早就没有理由继续生产它了,对吧

耶鲁公开课 - 生物医学工程探索课程节选

Some, like the smallpox vaccine on one exposure generates a very high response that lasts for many years so you don't need a boost.

有一些疫苗,比如接触一次天花疫苗后,人体就能产生高水平的免疫应答,并持续很多年,所以无需再次接种

耶鲁公开课 - 生物医学工程探索课程节选

I think the smallpox vaccine we made now would probably be better, more effective, and safer than the vaccines we made in the '50s.

我相信若我们现在制造天花疫苗,应该会比五十年代的更有效更安全

耶鲁公开课 - 生物医学工程探索课程节选

There is a new way to make smallpox vaccine that is fast and cheap.

CENTERFORSECURITYPOLICY: Freedom Flame 2013

It should have been obvious to even casual observers that the smallpox vaccine was a lifesaver.

FORBES: When Americans Rejected Small Pox Vaccines

The smallpox vaccine literally was the difference between life and death back in the early 1900s.

FORBES: The Pill, the Pox and the Limits of Religious Freedom