抗体对SARS-CoV-2疫苗接种的反应:1年随访时间
Eleonora Nicolai1, Flaminia Tomassetti1, Martina Pelagalli1
1Department of Experimental Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy.
Biomedicines
|October 28, 2023
概括
包括Comirnaty在内的三剂COVID-19疫苗系列显著提高了中和抗体水平. 这种持续的免疫反应表明接种疫苗后感染SARS-CoV-2的风险较低.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 传染性疾病 传染性疾病
背景情况:
- 全球制2019年冠状病毒病 (COVID-19) 严重依赖于疫苗接种策略.
- 评估不同疫苗接种计划的长期疗效对于维持公共健康至关重要.
- 了解疫苗接种后的抗体动态,可以为正在进行的公共卫生政策提供信息.
研究的目的:
- 评估针对SARS-CoV-2接种了三次疫苗接种系列的个体中和抗体的水平.
- 为了比较Vaxzevria和Comirnaty疫苗之间的抗体反应,特别是在增强剂后.
主要方法:
- 一个监测计划测量了IgG抗体与受体结合域 (RBD) 和代理病毒中和抗体 (sVNT) 在接种疫苗的人群中.
- 分析了接种Vaxzevria (n=56) 和Comirnaty (n=113) 疫苗的员工和医疗保健工作人员的血清样本.
- 在第二剂和第三剂后,对抗体水平进行了监测,长期随访长达一年.
主要成果:
- 接种Vaxzevria和Comirnaty的疫苗都在第二剂后增加了RBD和sVNT抗体水平.
- 康米尔纳蒂接收者在第一剂后6个月显示的抗体标位大约高出Vaxzevria接收者的一个数量级.
- 第三剂Comirnaty显著提升了抗体反应,在增强剂后五个月达到1000多个BAU/mL,从最初的疫苗接种开始将近一年.
结论:
- 一种三剂COVID-19疫苗接种方案,特别是Comirnaty,会引起强大而持续的中和抗体反应.
- 完成三剂量系列的个体表现出与SARS-CoV-2感染低风险相关的抗体水平.
- 这些发现支持多剂量疫苗接种策略的有效性,在长期提供对COVID-19的保护.
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