It is also the first vaccine designed mainly for use in Africa.

VOA: special.2010.04.20

And that person who really studied it systematically, and is given credit for developing the first vaccine, is a Scottish physician named Edward Jenner.

而那个系统研究疫苗,并被誉为发明了第一支疫苗的人,叫爱德华?詹纳,是苏格兰的一名医生

耶鲁公开课 - 生物医学工程探索课程节选

Vaccination from cows, and that's where the first vaccine came from.

从牛身上获取牛痘疫苗,这是疫苗首次亮相

耶鲁公开课 - 生物医学工程探索课程节选

The tests are the first step in human clinical trials of two vaccine candidates developed at the University of Cape Town.

VOA: special.2009.07.29

You could probably find some antigens that don't follow exactly this behavior, but in general, this is the kind of behavior you would see on first exposure to an antigen or vaccine, called the primary exposure, and on subsequent exposure to an antigen or vaccine called the boost.

可能你也会发现,一些抗原并不完全遵循这种模式,但通常来说,在你首次接触一种抗原或疫苗时,都能观察到这种模式,它被称为初次免疫,而接下来的,再次接触抗原或是疫苗被称为增强免疫

耶鲁公开课 - 生物医学工程探索课程节选

The hepatitis B vaccine is considered to be the first medicine that can protect people against liver cancer.

VOA: special.2010.11.16

These are all reasons why GAVI chose the pneumococcal vaccine for its first Advance Market Commitment project.

VOA: special.2010.03.29

But during last week's conference, experts reported the first decrease in international financing for AIDS vaccine research.

VOA: special.2009.07.29

It is the first malaria vaccine candidate to have large success during early testing.

VOA: special.2010.04.20

The first,or prime, vaccine came from the Sanofi Pasteur company.

VOA: special.2009.09.30

But researchers are working to develop the first human vaccine.

VOA: special.2010.07.12

The first,or prime,vaccine came from Sanofi Pasteur.

VOA: special.2009.10.13

So the country will be one of the first to get a vaccine - because of existing arrangements with drug companies.

VOA: standard.2009.07.31

The trial has been hailed as the world's first successful AIDS vaccine trial.

VOA: standard.2009.10.20