从欧米克朗BA.4/5主导地位中吸取教训:未来接种疫苗的准备策略
Jialiang Jiang1, Kwok Fai Lam2, Eric Ho Yin Lau3
1Department of Statistics and Actuarial Science, School of Computing and Data Science, The University of Hong Kong, Hong Kong Special Administrative Region of China.
Vaccine
|December 4, 2025
概括
在禁用疫苗后用mRNA疫苗进行异质增强,并使用双价疫苗显著改善了COVID-19的保护. 感染前的疫苗接种提供了优越的免疫力,与感染第一的策略相比,指导未来的流行病反应.
科学领域:
- 免疫学 免疫学 免疫学
- 流行病学 流行病学
- 公共卫生 公共卫生
背景情况:
- 免疫力下降 (>6个月) 需要了解最佳的COVID-19助推器策略来对抗Omicron BA.4/5.5.
- 调查疫苗接种-感染序列对免疫保护的影响对于公共卫生政策至关重要.
研究的目的:
- 评估不同COVID-19助推器策略对Omicron BA.4/5.5的有效性.
- 为了确定疫苗接种-感染序列对后续免疫力的影响.
主要方法:
- 香港1,737,475名成年人的全境观察研究 (2022年11月至2023年1月).
- 安德森-吉尔模型用于评估各种疫苗接种和感染史队列中的感染风险.
- 同源与异源增强,双价与标准疫苗,以及疫苗接种率先与感染率先方法的比较.
主要成果:
- 与同类策略相比,平台切换异质增强 (对mRNA无活化) 降低了9-21%的感染风险.
- 双对应的Omicron BA.4/BA.5 BNT162b2疫苗的危险性比标准的BNT162b2疫苗低30-58%.
- 首先接种疫苗的策略提供了更好的保护;首先感染的CoronaVac接种者在随后感染的风险上升了97-141%.
结论:
- 交换平台的异质增强和双价疫苗可以增强对COVID-19的保护.
- 首先接种疫苗的方法总是比首先感染的策略更有效.
- 这些发现支持积极的疫苗接种政策,并为未来的流行病提供快速应对策略.
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