相关实验视频

Updated: Jun 8, 2025

A Luciferase-fluorescent Reporter Influenza Virus for Live Imaging and Quantification of Viral Infection

A Luciferase-fluorescent Reporter Influenza Virus for Live Imaging and Quantification of Viral Infection

Published on: August 14, 2019

在斯里兰卡的A型流感病毒的基因组监测和进化动态

Tibutius Jayadas¹, Chandima Jeewandara¹, Bhagya Senadheera¹

¹University of Sri Jayewardenepura.

Research square

|November 1, 2024

概括

斯里兰卡A型流感的基因组测序揭示了具有独特突变的独特H1N1和H3N2菌株. 持续的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.
为了对流通的流感菌株进行突变分析.
了解该地区流感病毒的进化动态.

主要方法:

从2022年11月到2024年5月,有349名患有呼吸道症状的人被纳入.
量化PCR被用于检测流感A,B和SARS-CoV-2.
牛津纳米孔技术使得流感A菌株的亚型和基因组测序成为可能.

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分类中,并有进化的子分类.
H3N2序列属于特定的分类和子类,在H1N1和H3N2菌株中观察到氨基酸替代.

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.
不同的流感A菌株在18个月的时间内流通,表现出独特的突变.
持续监测对于选择适当的流感疫苗和优化施用时间在斯里兰卡至关重要.

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.

更多相关视频

Monitoring Influenza Virus Survival Outside the Host Using Real-Time Cell Analysis

Monitoring Influenza Virus Survival Outside the Host Using Real-Time Cell Analysis

Published on: February 20, 2021

Using Zebrafish Models of Human Influenza A Virus Infections to Screen Antiviral Drugs and Characterize Host Immune Cell Responses

Using Zebrafish Models of Human Influenza A Virus Infections to Screen Antiviral Drugs and Characterize Host Immune Cell Responses

Published on: January 20, 2017

相关概念视频

Viral Mutations

Viral Mutations

A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...

Leaky Scanning

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...

Viral Recombination

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.