感染Omicron变种 (B.1.1.529) 后的死亡率:它有多致命? 一个系统的审查和元分析
Suhaib Js Ahmad1,2, Jason R Degiannis2,3, Joseph Borucki4
1Betsi Cadwaladr University Health Board Department of General Surgery Wales UK.
Journal of acute medicine
|June 10, 2024
概括
萨斯-CoV-2的Omicron变种的死亡率低于三角洲变种. 接种mRNA疫苗可以有效地预防Omicron感染引起的严重疾病和死亡.
科学领域:
- 流行病学 流行病学
- 传染性疾病 传染性疾病
- 公共卫生 公共卫生
背景情况:
- 自2019年底以来一直持续的SARS-CoV-2流行病受到新变种出现的重大影响.
- 2021年11月发现的Omicron变种在了解疾病严重程度和传播方面提出了新的挑战.
- 评估变种的影响和疫苗接种等干预措施的有效性对于公共卫生战略至关重要.
研究的目的:
- 评估SARS-CoV-2的Omicron变种的严重程度.
- 量化疫苗在降低与Omicron变种相关的死亡率方面的有效性.
- 将Omicron变种的死亡率与之前的SARS-CoV-2变种进行比较.
主要方法:
- 进行了系统性审查和元分析.
- 分析了2021年11月以后发表的270篇文章的数据.
- 该分析包括了3,214,869名感染Omicron变种的患者的数据.
主要成果:
- 在感染Omicron的患者中,共记录了6,782例死亡,死亡率为0.21%.
- 在分析的文章中,合并的死亡率为0.003,合并的内部死亡率为0.036.
- 疫苗接种在预防死亡方面被发现是有效的,几率比为0.391 (p < 0.01).
结论:
- 与Omicron变种相关的死亡率相比,与之前的Delta变种相比较低.
- mRNA疫苗接种提供了强有力的和有效的保护,防止严重的疾病和死亡由Omicron变种引起.
- 疫苗接种仍然是减轻SARS-CoV-2变种影响的关键工具.
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