在原始和疫苗突破性感染中由Omicron亚系诱导的差异性免疫力
Noah Brazer1, Mary Kate Morris2, Venice Servellita1
1Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA.
Scientific reports
|July 3, 2025
概括
像BQ.1.1和XBB.1.5这样的Omicron亚系显示出抗体逃避的增加. 之前的SARS-CoV-2暴露可能会损害对这些变体的免疫反应,从而导致它们的持续传播.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- SARS-CoV-2 的 Omicron 变种迅速演变为众多的亚系.
- 这些亚系表现出增强的抗体逃避能力.
- 了解对这些不断变化的变体的免疫反应对于公共卫生至关重要.
研究的目的:
- 量化和比较针对各种SARS-CoV-2变体的中和抗体标位.
- 调查先前感染或接种疫苗对对Omicron亚系的免疫反应的影响.
- 评估交叉中和抗体反应的持久性.
主要方法:
- 进行了活病毒中和试验.
- 在170名COVID-19患者和25名接种疫苗的对照组中测量了抗体标位.
- 参与者感染了Delta或Omicron亚系 (BA.1,BA.2,BA.4/BA.5,BQ.1.1,XBB.1.5) 或接受了BA.5双价增剂.
主要成果:
- 接种疫苗的对照人群对早期的Omicron亚系 (例如,BA.5) 的中和度比后来的亚系 (BQ.1.1,XBB.1.5) 高.
- 在感染了Omicron的患者中,交叉中和反应较弱,并且与以后的亚系相比不太持久.
- 对BQ.1.1或XBB.1.5的自我中和标位低于对早期亚系的交叉中和标位.
结论:
- 之前的SARS-CoV-2暴露 (感染或接种疫苗) 可能导致"原始抗原性罪",损害对较新的Omicron亚系的反应.
- 后来的Omicron亚系的免疫性降低和抗体逃避增加,有助于它们持续的全球循环.
关键词:
BA.1 BA.1 的意思是说.在BA.2中,BA.在BA.4中,BA.BA.5 BA.5 是一个BFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBFBBQ.1 一个问题.突破性感染是一种突破性感染.在 COVID-19 疫情中,德尔塔 德尔塔 德尔塔是什么意思中和抗体的抗体.这就是Omicron.在SARS-CoV-2变种中.接种疫苗可以促进疫苗的使用.这是XBBBBXBB.相关概念视频
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