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Influenza Other Respir Viruses. 2016 Jul;10(4):247-53. doi: 10.1111/irv.12389. Epub 2016 May 27.

Rapid spread of influenza A(H1N1)pdm09 viruses with a new set of specific mutations in the internal genes in the beginning of 2015/2016 epidemic season in Moscow and Saint Petersburg (Russian Federation).

Author information

1
Research Institute of Influenza, Ministry of Healthcare of the Russian Federation, Laboratory of Molecular Virology and Genetic Engineering, WHO-recognized National Influenza Centre of Russian Federation, Saint Petersburg, Russia.
2
Research Institute of Influenza, Ministry of Healthcare of the Russian Federation, Laboratory of Influenza Vaccines, Saint Petersburg, Russia.
3
Research Institute of Influenza, Ministry of Healthcare of the Russian Federation, Laboratory of Molecular Virology and Genetic Engineering, Saint Petersburg, Russia.
4
Research Institute of Influenza, Ministry of Healthcare of the Russian Federation, Laboratory of Evolutionary Variability of Influenza Viruses, WHO-recognized National Influenza Centre of Russian Federation, Saint Petersburg, Russia.
5
Research Institute of Influenza, Ministry of Healthcare of the Russian Federation, Department of IT, WHO-recognized National Influenza Centre of Russian Federation, Saint Petersburg, Russia.
6
Research Institute of Influenza, Ministry of Healthcare of the Russian Federation, Laboratory of Biotechnology, WHO-recognized National Influenza Centre of Russian Federation, Saint Petersburg, Russia.
7
Federal Research Center of Epidemiology and Microbiology named after N. F. Gamaleya, WHO-recognized National Influenza Centre of Russian Federation, Moscow, Russia.
8
Research Institute of Influenza, Laboratory of Influenza and ARI Epidemiology, WHO-recognized National Influenza Centre of Russian Federation, Saint Petersburg, Russia.

Abstract

A dramatic increase of influenza activity in Russia since week 3 of 2016 significantly differs from previous seasons in terms of the incidence of influenza and acute respiratory infection (ARI) and in number of lethal cases. We performed antigenic analysis of 108 and whole-genome sequencing of 77 influenza A(H1N1)pdm09 viruses from Moscow and Saint Petersburg. Most of the viruses were antigenically related to the vaccine strain. Whole-genome analysis revealed a composition of specific mutations in the internal genes (D2E and M83I in NEP, E125D in NS1, M105T in NP, Q208K in M1, and N204S in PA-X) that probably emerged before the beginning of 2015/2016 epidemic season.

KEYWORDS:

A(H1N1)pdm09; Russia; high-throughput nucleotide sequencing; influenza

PMID:
26992820
PMCID:
PMC4910175
DOI:
10.1111/irv.12389
[Indexed for MEDLINE]
Free PMC Article

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