两年后的COVISHIELD疫苗接种中和10种SARS-CoV-2变异的抗体,特别是对Omicron亚型和助推剂的注射
Rajashree Patil1, Sonali Palkar2, Akhileshchandra Mishra1
1Department of Translational Virology, Interactive Research School for Health Affairs, Bharati Vidyapeeth (Deemed to be) University, Pune 411043, Maharashtra, India.
Vaccines
|September 28, 2024
概括
科维希尔德疫苗增剂显著增强了对抗SARS-CoV-2变种的中和抗体. 抗体水平在补充剂后至少持续16个月,提供广泛的保护.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 中和抗体 (NAbs) 对SARS-CoV-2疫苗的疗效至关重要.
- 了解NAb对不断变化的变种的耐用性对于公共卫生至关重要.
- 印度的COVISHIELD疫苗接种者被研究以评估抗体反应.
研究的目的:
- 在COVISHIELD疫苗接种者中评估NAbs与十种SARS-CoV-2变异的耐用性.
- 评估先前感染和强剂对NAb水平的影响.
- 为了确定中和抗体反应在接种疫苗后和后增剂后的寿命.
主要方法:
- 分析了184个疫苗样本 (前阳性和前阴性).
- 使用了一种经过验证的十倍数MSD ACE2中和试验.
- 在多个时间点测量NAb水平:1个月,6个月,后补充剂,以及接种疫苗后2年.
主要成果:
- 疫苗接种后1至6个月内,血清阳性显著下降,特别是针对Omicron变种.
- 在6个月后,与所有变体相比,NAb水平显著降低.
- 助推剂量显著增加了减少的抗变体抗体水平,无论之前的暴露.
结论:
- 科维希尔德疫苗增剂产生针对广泛的SARS-CoV-2变种的交叉中和抗体.
- 抗体反应显示,增强剂后16个月和疫苗接种后两年的耐久性得到改善.
- 补充疫苗接种有效地恢复和维持对各种SARS-CoV-2变种的中和抗体水平.
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