在先前接种疫苗和未接种疫苗的成年人中长期流感抗体的概况
Iván Sanz-Muñoz1,2,3, Conrado Lajara4, Javier Sánchez-Martínez1,2
1National Influenza Centre, Hospital Clinico Universitario de Valladolid, Valladolid, Spain.
Human vaccines & immunotherapeutics
|August 2, 2023
概括
从未接种过流感疫苗的成年人最初的保护水平较低,但在接种疫苗后产生更强的抗体反应. 抗体水平在六个月内下降,在接种疫苗和未接种疫苗的组之间均等,确保季节性保护.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 流行病学 流行病学
背景情况:
- 流感疫苗接种是公共卫生的一个关键策略.
- 了解疫苗接种后的抗体动态对于评估疫苗疗效至关重要.
- 以前的疫苗接种状态可能会影响血清反应.
研究的目的:
- 分析接种疫苗后成年人流感抗体的动态.
- 为了比较以前接种过疫苗和从未接种过疫苗的个体之间的抗体反应.
- 为了评估抗体持久性和血清保护随时间的推移.
主要方法:
- 在成年工人中进行了一项病例-队列血清学研究.
- 血清样本在接种疫苗前收集,接种疫苗后30-40天,接种疫苗后6个月.
- 在先前接种疫苗 (V) 和从未接种疫苗 (NV) 组中分析了抗体标位.
主要成果:
- 与接种疫苗的组 (V) 相比,从未接种疫苗的个人 (NV) 在接种疫苗前的血清保护水平较低,但在接种疫苗后的抗体反应高出2至4倍.
- 两组的抗体标位均下降了6个月,最终达到平衡.
- 抗体水平随着年龄的增长而下降,没有根据潜在病理观察到显著差异.
结论:
- 接种流感疫苗会在从未接种过疫苗的成年人中引起更强大的抗体反应.
- 尽管先前接种疫苗的人最初的抗体标位较低,但在接种疫苗后的6个月内,抗体会持续存在并在不同组之间均衡.
- 这种持续存在的抗体在整个流感季节提供了保护.
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