在返回的中国人中增强了对SARS-CoV-2的免疫力
Runyu Yuan1, Huimin Chen1,2, Lina Yi1
1Guangdong Workstation for Emerging Infectious Disease Control and Prevention, Guangdong Provincial Key Laboratory of Pathogen Detection for Emerging Infectious Disease Response, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China.
Human vaccines & immunotherapeutics
|January 8, 2024
概括
全球COVID-19疫苗接种和先前感染在返回的中国人中建立了强大的免疫力. 推进行补充疫苗接种,以保持对SARS-CoV-2变种的保护.
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:
- 全球COVID-19疫苗接种计划对于控制SARS-CoV-2传播至关重要.
- 了解返回人口的免疫力对于在中国管理COVID-19至关重要.
- 鉴定免疫状况有助于评估群体免疫力和长期疾病管理.
研究的目的:
- 评估返回中国的个人免疫状况.
- 评估COVID-19疫苗接种和先前感染SARS-CoV-2及其变体的有效性.
- 确定影响抗体标位和免疫反应的因素.
主要方法:
- 从中国广州的隔离站招募个人.
- 收集血液和喉抽样样本.
- 使用竞争性ELISA,微中和测试和FluoroSpot测试进行免疫评估.
主要成果:
- 大约90%的返回的中国人显示了对SARS-CoV-2的中和抗体.
- 与原型病毒相比,中和抗体标位对Omicron亚型 (BA.5,BF.7,BQ.1,XBB.1) 较低.
- 记忆T细胞反应在不同组中保持一致,不受变异的影响.
- 吸烟,酒精,感染史,接种疫苗以及上次接种疫苗以来的时间等因素影响了抗体标位.
- 疫苗剂量是Omicron亚变体标位的唯一共同因素.
结论:
- 返回的中国人由于接种疫苗和先前感染而表现出增强的免疫力.
- 复发疫苗接种 (同源或异源) 对于重新开放后的国内居民是有益的.
- 助推剂可以提供对SARS-CoV-2变种突破性感染的保护.
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