方法：测定破伤风类毒素聚乳酸微球免疫动物后1年中动物血清抗体反应及疫苗制剂的生物利用度。
Methods: The antibody levels elicited by microsphere formulations in mice for 1 year were examined, and the bioavailability of microsphere formulations was calculated.
包括疫苗研究和开发及迅速诊断的工具在内的人类和技术基础结构有助于保护人民避免所有传染病的威胁。
The human and technology infrastructure, including research and development of vaccines and rapid tools for diagnosis, can serve to protect people against all infectious disease threats.
如果我们能研制一种对所有流感病毒株都有效的疫苗，我们就可以预防年度季节性流感及偶见的流感大流行，就像其它那些疾病一样。
If only we could develop a vaccine that was effective against all strains of flu, we might prevent both annual epidemics and occasional pandemics like the one now under way.
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