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1·Gradually, the sugar-coated polio vaccine was made available in China.

糖衣脊髓灰质炎疫苗逐渐在中国得到普及。

2·They became the first group of people in China to try a polio vaccine.

他们成为中国第一批尝试脊髓灰质炎疫苗的人。

3·In 1960 some polio vaccine was contaminated with the virus.

1960年，一些脊髓灰质炎疫苗被病毒污染。

4·For example, it used to take 36 monkeys to test a sample of polio vaccine, now it takes only 22.

例如，以前做一次脊髓灰质炎需要36只猴子，现在只需要22只。

5·A: a vaccine-derived poliovirus (VDPV) is a rare strain of poliovirus, genetically mutated from the strain contained in oral polio vaccine (OPV).

答：疫苗衍生脊髓灰质炎病毒(VDPV)是一种罕见的脊髓灰质炎病毒株，由口服脊髓灰质炎疫苗(opv)里的病毒株遗传变异而来。

6·The need for additional rounds of mass oral polio vaccine (OPV) immunization will be based on an ongoing evaluation of epidemiological and laboratory data.

是否有必要进行更多轮次的口服脊髓灰质炎疫苗大规模免疫接种活动，将以正在进行的流行病学和实验室数据评估情况作为根据。

7·In the meantime, more than 33 000 children were paralysed by wild poliovirus while more than 6.5 million polio cases were prevented by the oral polio vaccine.

这期间，虽然口服脊髓灰质炎疫苗防止了超过650万起脊髓灰质炎病例的发生，但仍有33,000余名儿童因感染脊髓灰质炎野病毒株致瘫。

8·In the past 10 years worldwide (as of September 2007), more than 10 billion doses of oral polio vaccine have been administered to more than 2 billion children.

过去十年在全球范围内(截至2007年9月)，共有超过100亿份口服脊髓灰质炎疫苗用于20多亿儿童。

9·Several years ago, when I was writing a book about the polio vaccine, I had the opportunity to spend months wading through the personal papers of Jonas Salk.

几年前，当我正在写一本关于小儿麻痹症的疫苗的书时，我有幸花了几个月来研读Jonas Salk的个人论文。

10·Sure, there have been scientists with Professor McAfee's attitude - Jonas Salk was asked who owned the patent to the polio vaccine and scoffed: Could you patent the sun?

当然，也有科学家持有mcafee教授的观点——有人问乔纳斯·索尔克谁谁拥有脊髓灰质炎疫苗的专利并嘲笑他：你能拥有太阳的专利吗？