A substance that HAS been treated to destroy its toxic properties but retains the capacity to stimulate production of antitoxins, used in immunization.

类毒素经过处理后已消除其毒素特性的一种物质，但仍保留有激发产生抗毒素的能力，用于免疫中。

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The Committee further noted that if the vaccine is being used in mass campaigns, it would be especially important for smallpox immunization programmes to be supported by adverse event monitoring.

委员会进一步指出，如果疫苗用于群体免疫，特别重要的是要有不良反应事件监测系统来支持天花免疫规划。

youdao

The polypeptides, including fragments and variants thereof, may be used in immunogenic compositions for prophylactic or therapeutic immunization against Streptococcus pneumoniae.

免疫原性组合物中可使用这些多肽及其片段和变体，以便预防性或治疗性免疫对抗肺炎链球菌。

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It was used for the first time in December in a polio immunization campaign in Afghanistan.

VOA: special.2010.01.18

The second study demonstrated that the vaccine candidate can be administered alongside the standard set of vaccines used in national immunization programs for young infants.

WSJ: Defeat Malaria? Yes We Can.