与SARS-CoV-2疾病严重程度相关的病毒和宿主因素在美国乔治亚州,美国
Ludy R Carmola1, Allison Dorothy Roebling2,3,4, Dara Khosravi1
1Department of Pathology and Laboratory Medicine; Emory University School of Medicine; Atlanta, GA, 30322; USA.
medRxiv : the preprint server for health sciences
|November 14, 2023
概括
接种疫苗显著降低了COVID-19从SARS-CoV-2变种如Delta和Omicron的严重程度. 疫苗接种后91-270天,增强剂最有效,而年龄和健康状况会增加风险.
科学领域:
- 流行病学 流行病学
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 低于最佳的SARS-CoV-2疫苗接种率和新出现的变种带来了持续的公共卫生挑战.
- 了解影响COVID-19严重程度的因素对于公共卫生战略至关重要.
研究的目的:
- 调查与SARS-CoV-2疾病严重程度相关的病毒和宿主因素,包括疫苗接种状态.
- 分析变种,突变和临床因素对低疫苗接种环境中的COVID-19结果的影响.
主要方法:
- 美国乔治亚州1,957名患者的临床和人口统计数据的分析.
- 1,185个SARS-CoV-2样本的病毒基因组测序.
- 统计分析以确定因素与疾病严重程度之间的关联.
主要成果:
- 德尔塔和Omicron变种之间疾病严重程度没有显著差异.
- 接种疫苗与两种变体的SARS-CoV-2疾病严重程度降低有关.
- 在感染前91-270天接种疫苗显示出对中度/严重结局的最强的保护作用.
- 高龄,免疫抑制和脏疾病与严重程度的增加有关.
结论:
- 疫苗接种仍然是减轻SARS-CoV-2疾病严重程度的关键工具,无论常见的变种如何.
- 接种疫苗的时间会影响疫苗的有效性.
- 临床因素,如年龄和并发症,显著影响COVID-19的结果.
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