协同进化:SARS-CoV-2和人类保护性免疫在现实世界的动态适应
Yunhui Li1, Xiaohan Zhang2, Jingkun Yi3
1Department of Clinical Laboratory, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China.
The Journal of infection
|October 11, 2024
概括
主体免疫力和SARS-CoV-2变体一起进化. 对以前变种的中和抗体 (NAbs) 对像Omicron和XBB这样的新变种提供了有限的保护,凸显了更新疫苗的需要.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 流行病学 流行病学
背景情况:
- 严重急性呼吸系统综合征冠状病毒2 (SARS-CoV-2) 持续演变,导致新的变种可以逃避现有的免疫力.
- 了解感染获得免疫和混合免疫的动态对于管理COVID-19至关重要.
- 评估针对不同SARS-CoV-2变种的免疫反应对于公共卫生策略至关重要.
研究的目的:
- 评估感染获得免疫和混合免疫对SARS-CoV-2再感染和严重疾病的有效性.
- 随着时间的推移,分析中和抗体 (NAb) 对广泛的SARS-CoV-2变体的反应.
主要方法:
- 在2020年至2023年期间,从感染了各种SARS-CoV-2变体的个体收集了890个血清样本.
- 使用高通量试验对18种不同的SARS-CoV-2变体进行血清中和抗体 (NAb) 水平的评估.
主要成果:
- 起初,在疫苗出现之前,超过75%的患者对祖先病毒具有强大的NAbs.
- 在Omicron后出现,抗OmicronNAbs的血清流行率显著增加.
- 到2023年4月,约80%的患者表现出>50%的免疫逃避XBB血统的中和.
- 确定了三种SARS-CoV-2血清型 (非Omicron,Omicron,XBB),它们之间的交叉保护有限.
结论:
- 在宿主免疫和SARS-CoV-2变体之间证明了协同进化.
- 结果为开发下一代疫苗和公共卫生干预提供了洞察力.
- 有限的交叉中和强调了由不断演变的SARS-CoV-2变种所带来的挑战.
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