在自然感染和接种疫苗后,SARS-CoV-2 T细胞免疫反应
Vassiliki C Pitiriga1, Myrto Papamentzelopoulou2, Kanella E Konstantinakou3
1Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece.
Vaccines
|July 29, 2023
概括
自然的细胞免疫力对感染或混合免疫力提供比仅疫苗免疫力对SARS-CoV-2的更强的保护. 这项研究比较了康复/接种疫苗,接种疫苗-先前未接种疫苗和康复-未接种疫苗的个体的T细胞反应.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 公共卫生 公共卫生
背景情况:
- 针对SARS-CoV-2的T细胞免疫对于控制感染和疾病严重程度至关重要.
- 感染和疫苗接种都会激活T细胞反应.
- 了解不同暴露组的T细胞免疫力至关重要.
研究的目的:
- 为了比较具有混合免疫 (康复和接种疫苗) 个体的SARS-CoV-2 T细胞反应.
- 为了比较接种疫苗的先验 (未暴露) 个体的T细胞反应.
- 为了比较康复期未接种疫苗的个体的T细胞反应.
主要方法:
- 从2021年9月到2022年9月的医疗记录的回顾性分析.
- 将530名成年受试者分为三组:混合免疫,先前接种过疫苗和康复期未接种疫苗.
- 使用T-SPOT.COVID测试对SARS-CoV-2尖峰 (S) 和核囊 (N) 抗原进行T细胞反应评估.
主要成果:
- 混合免疫和康复期未接种疫苗的群体显示,S抗原反应率高于接种疫苗的未接种疫苗的个体.
- 与先前接种疫苗的组相比,混合免疫组对S抗原的T细胞反应 (SFC计数) 在混合免疫组显著更高.
- 在混合免疫和康复未接种疫苗组之间,N抗原反应率没有显著差异.
结论:
- 自然细胞免疫,无论是单独的还是与疫苗接种相结合,似乎提供了更强大的保护.
- 混合免疫和自然感染可能会比单独接种疫苗提供更持久的SARS-CoV-2保护.
- 需要进一步的研究,以充分阐明不同免疫特征的长期影响.
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