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在斯里兰卡的流感病毒的基因组监测和进化动态

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.

Virology journal

|November 27, 2024

概括

斯里兰卡A型流感的基因组测序揭示了多种菌株和突变,突显了持续监测的必要性. 这项研究对于在该地区选择有效的疫苗和优化其施用时间至关重要.

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:

流感A是一种具有流行病潜力的优先病原体.
基因组测序有助于理解流感的演变和疫苗的选择.
本研究侧重于斯里兰卡流感病毒的分子流行病学.

研究的目的:

了解斯里兰卡西部省份流感病毒的分子流行病学.
为了对流传的流感菌株进行突变分析.
为了研究流感A病毒的进化动态.

主要方法:

对349名个人进行A,B型流感和SARS-CoV-2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基因序列的家族遗传学分析.

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.
H1N1序列属于6B.1A.5a.2a类,在2023年和2024年确定了特定的子类.
H3N2序列被分配到3C.2a1b.2a.2a.1b类和G.1.1.2类 (2023年),以及3C.2a1b.2a.2a.3a.1类和J.2类 (2024年).
在H1N1菌株中确定了多种氨基酸替代,在2024序列中观察到额外的替代.

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.
在18个月的时间内,观察到各种流感A病毒在循环中传播.
持续监测对于选择合适的疫苗和确定最佳的施用时间是必不可少的,因为观察到的突变具有未知的意义.

关键词:

刀片刀片刀片刀片基因组测序是一种基因组测序.流感 A 是一种流感.分子流行病学分子流行病学这就是SARS-CoV-2病毒.严重的疾病严重的疾病.副类型副类型副类型疫苗疫苗是一种疫苗.

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