Improved vaccines for aftosa, malaria and other tropical animal diseases are also on the horizon . 预防口蹄疫、疟疾和其它热带动物疾病的高效疫苗也已经出现。
Whatever vaccines ultimately become available, there is no question that such preventives are urgently needed . 不管最终出现的是哪种疫苗，对它们的迫切需求是毫无问题的。
For several decades thereafter control of infectious disease was based exclusively on the use of antisera and vaccines . 此后几十年间，传染病几乎全靠抗血清及疫苗来控制。
The nih unitage is based upon the ability of a vaccine to protect mice against a standard intracerebral infection . NIH单位值是根据保护小白鼠大脑内免受一次标准感染的能力而制定的。
The discovery that an animal can be immunized with only the coat of a virus opens new possibilities in vaccine research . 只用病毒的覆膜就可以使动物免疫的这一发现为疫苗的研究开辟了新途径。
Those young children who have not received a booster dose of vaccine in more than a year should receive an injection upon exposure . 一年多没有接受加强剂量疫苗注射的年幼儿童，受暴露时，应接受一次注射。
This vaccine will give you immunity for two years 接种这种疫苗可有两年免疫力。
Seasonal influenza vaccines for poultry workers 对接触家禽的工人定期注射疫苗。
No vaccines would be available until at least march 疫苗最快在明年三月才面世。
Even if the vaccine 4 , 000 dogs also all killed 连打过疫苗的4千只狗也都杀死了。
