他指出了沙门氏菌疫苗的进展。

He points to progress made on a salmonella vaccine.

youdao

尽管如此，专家预测疫苗的使用将在未来几年内显著增加。

Nevertheless, experts predict that use of the vaccine will increase significantly within the next few years.

youdao

这就是我们需要多次接种疫苗的原因。

That's why we need to take the vaccine more than one time.

youdao

So, that was a naturally occurring attenuated virus that could be produced into a vaccine that didn't cause the disease.

因为天花病毒存在天然的衰减病毒,这种衰减病毒可以用来,直接生产不致病的疫苗

耶鲁公开课 - 生物医学工程探索课程节选

So, this just shows as the vaccine was distributed, given to more people, that prevalence of the disease dropped dramatically.

因此,这表明随着疫苗的推广,以及接种人数的增加,该疾病的患病率显著降低

耶鲁公开课 - 生物医学工程探索课程节选

I want to spend some time on that until we talk about-- before we talk about development of the polio vaccine.

我想多花些时间讨论这个问题,在我们讨论,在我们讨论脊髓灰质炎疫苗的发展之前

耶鲁公开课 - 生物医学工程探索课程节选