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在斯里兰卡,基因组监测和流感A病毒的进化动态

Tibutius Thanesh Pramanayagam Jayadas¹, Chandima Jeewandara¹, Bhagya Senadheera¹

¹Allergy Immunology and Cell Biology Unit, Department of Immunology and Molecular Medicine, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.

medRxiv : the preprint server for health sciences

|September 4, 2024

概括

斯里兰卡A型流感的基因组测序揭示了正在演变的病毒菌株. 持续监测对于有效的疫苗选择和流行病准备至关重要.

科学领域:

病毒学病毒学
基因组学就是基因组学.
流行病学流行病学

背景情况:

甲型流感是世卫组织的优先病原体,具有流行病潜力.
基因组测序有助于理解流感的演变和疫苗的选择.
这项研究重点关注斯里兰卡西部省份流感病毒的分子流行病学.

研究的目的:

在斯里兰卡调查流感A和B病毒的分子流行病学.
进行流传性流感菌株的突变分析,以了解进化动态.
为斯里兰卡提供信息化的流感疫苗选择和公共卫生战略提供数据.

主要方法:

对349个呼吸道样本进行A,B型流感和SARS-CoV-2型流感的定量PCR查.
使用牛津纳米孔技术对A型流感菌株进行基因组测序.
针对H1N1和H3N2亚型的HA基因序列的遗传学分析.

主要成果:

在14%的患者中检测到A型流感,在5.7%的患者中检测到B型流感,在11.7%的患者中检测到SARS-CoV-2.
遗传学分析将H1N1序列置于6B.1A.5a.2a类中,在2023年至2024年期间观察到特定的亚类演变.
H3N2序列被分配给特定的分类和子类,在H1N1和H3N2两种菌株中确定了氨基酸替代.

结论:

这是第一个使用基因组测序在斯里兰卡鉴定流感A菌株的研究.
观察到不同的流感A病毒株在18个月的时间内循环.
持续的监测和详细的突变分析对于斯里兰卡的最佳疫苗选择和给药时间至关重要.

关键词:

流感 A 是一种流感.这就是SARS-CoV-2病毒.克莱德斯是什么意思基因组测序是指基因组测序.分子流行病学分子流行病学严重的疾病是严重的疾病.小型类型亚型类型疫苗,疫苗的使用情况.

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