| 单词 | booster shot |
| 释义 | booster shot booster shot n.（名词）An additional dose of an immunizing agent, such as a vaccine or toxoid, given at a time after the initial dose to sustain the immune response elicited by the previous dose of the same agent.Also called booster dose 强化注射剂量：首次用药后给予的免疫制剂如疫苗或类毒素的加量，以维持前次相同药剂诱导的免疫反应也作 booster dose |
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