Sensitization to severe dengue illness through pre-existing immunity is a serious safety concern for vaccination.
免疫接种时的一个严重的安全性问题是由于先前已经存在的免疫性而触发严重登革热。
The H1N1 pandemic was characterized by the emergence of a new influenza virus to which many people had no pre-existing immunity.
H1N 1流感大流行的特点是出现新的流感病毒，而许多人对其并没有预先存在的免疫力。
What we have found is that the swine flu has similarities to the seasonal flu, which appear to provide some level of pre-existing immunity.
我们发现的是，猪流感与季节性流感有相似之处，它可以提供某种之前存在的免疫性。
This is an important distinction because the efficacy of a live priming vaccine could be affected by existing immunity to the microorganism and to related species.
区分这个很重要，因为初次免疫的功效会受到已经存在的针对该细菌或者相关细菌的免疫性的影响。
The method taught herein functions to offset pre-existing immunity through the delivery of the protein or antigen by a cocktail of at least two adenoviral serotypes.
本文所述方法的作用是通过至少两种腺病毒血清型混合物送递蛋白质或抗原，以抵消已有的免疫力。
Whether this reflects the persistence of pre-existing immunity at the time of revaccination or lower rates of revaccination in the study populations cannot be determined.
这是因为再次接种时前次的免疫性仍然存在，抑或是因为在研究人群中再次接种率较低，对此目前尚无定论。
When people have no pre-existing immunity to a flu virus, they need not just one but two doses of vaccine several weeks apart - making it very hard to immunise many people in time to protect them.
当人们对流感病毒没有预先免疫性，他们就需要几周间隔的两次注射而不是一次注射-这在当时免疫接种很多人去保护他们操作是非常困难的。
We define the concept of organizational immunity, and describe the functions, mechanisms and influencing factors of organizational immunity on the basis of comparison among the existing theories.
在对现有理论的分析比较基础上，界定了组织免疫的概念，阐述了组织免疫的功能、机制和影响因素。
Most existing vaccines elicit a targeted antibody response, but safely activating cellular immunity against many infectious diseases remains a challenging task.
多数现存疫苗所引发的是特定抗体反应，至于想要安全活化细胞免疫，来对抗许多传染病，目前还是一项挑战。
Based on the regulation law of immunity feedback response in biology, a compound path tracking control method is proposed for the problem existing in the non-time based approach of mobile robots.
针对移动机器人非时间参考控制方法的不足之处，借鉴生物免疫反馈响应过程的调节规律，提出了移动机器人的免疫非时间参考路径跟踪控制方法。
Comparing with the existing charge-retention driving circuit, it has the merits of simplified structure, shorter common conduction time, better immunity to interference and reduced driving loss.
该文提出了一种新颖的电荷自维持电路，它比现有的电荷自维持电路在结构上更加简单，共态导通的时间更加短，抗干扰能力更强，驱动损耗更小。
Comparing with the existing charge-retention driving circuit, it has the merits of simplified structure, shorter common conduction time, better immunity to interference and reduced driving loss.
该文提出了一种新颖的电荷自维持电路，它比现有的电荷自维持电路在结构上更加简单，共态导通的时间更加短，抗干扰能力更强，驱动损耗更小。
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