病毒学
病毒
抗原漂移
谱系(遗传)
H5N1导致的人类死亡率
生物
入射(几何)
克莱德
H5N1基因结构
流感季节
大流行
甲型流感病毒
流感疫苗
医学
2019年冠状病毒病(COVID-19)
基因
系统发育学
传染病(医学专业)
疾病
遗传学
内科学
物理
光学
作者
Anna Sominina,Daria Danilenko,Andrey A. Komissarov,Ludmila Leonidovna Karpova,Maria Pisareva,Artem Fadeev,Nadezhda Konovalova,Mikhail Yu. Eropkin,Kirill Stolyarov,Anna A. Shtro,Elena Burtseva,Dmitry Lioznov
出处
期刊:Viruses
[MDPI AG]
日期:2022-08-29
卷期号:14 (9): 1909-1909
被引量:1
摘要
Influenza circulation was substantially reduced after March 2020 in the European region and globally due to the wide introduction of non-pharmaceutical interventions (NPIs) against COVID-19. The virus, however, has been actively circulating in natural reservoirs. In summer 2021, NPIs were loosened in Russia, and influenza activity resumed shortly thereafter. Here, we summarize the epidemiological and virological data on the influenza epidemic in Russia in 2021–2022 obtained by the two National Influenza Centers. We demonstrate that the commonly used baseline for acute respiratory infection (ARI) is no longer sufficiently sensitive and BL for ILI incidence was more specific for early recognition of the epidemic. We also present the results of PCR detection of influenza, SARS-CoV-2 and other respiratory viruses as well as antigenic and genetic analysis of influenza viruses. Influenza A(H3N2) prevailed this season with influenza B being detected at low levels at the end of the epidemic. The majority of A(H3N2) viruses were antigenically and genetically homogenous and belonged to the clade 3C.2a1b.2a.2 of the vaccine strain A/Darwin/9/2021 for the season 2022–2023. All influenza B viruses belonged to the Victoria lineage and were similar to the influenza B/Austria/1359417/2021 virus. No influenza A(H1N1)pdm09 and influenza B/Yamagata lineage was isolated last season.
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