ArticlePathogens (Basel, Switzerland)2019
Antigenic Site Variation in the Hemagglutinin of Pandemic Influenza A(H1N1)pdm09 Viruses between 2009-2017 in Ukraine.
Article in Pathogens (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 18 citations in OpenAlex.
- Whole-genome analysis of influenza A(H1N1)pdm09 viruses in Cameroon (2019-2024) using nanopore sequencing.BMC infectious diseases · 2025Article
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- Epidemiological and genetic characterization of the influenza A (H1N1) virus in Hangzhou City in 2023.Frontiers in public health · 2024Article
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- Monoclonal Antibody Targeting the HA191/199 Region of H1N1 Influenza Virus Mediates the Damage of Neural Cells.Biochemistry. Biokhimiia · 2021Article
- Article
- Low Dose Pig Anti-Influenza Virus Monoclonal Antibodies Reduce Lung Pathology but Do Not Prevent Virus Shedding.Frontiers in immunology · 2021Article
- Article
- Review
- Whole-genome sequencing reveals origin and evolution of influenza A(H1N1)pdm09 viruses in Lincang, China, from 2014 to 2018.PloS one · 2020Article
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Authors and funding
5 authors at 2 institutions in 1 country.
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Abstract
The hemagglutinin (HA) is a major influenza virus antigen, which, once recognized by antibodies and substitutions in HA genes, helps virus in escaping the human immune response. It is therefore critical to perform genetic and phylogenetic analysis of HA in circulating influenza viruses. We performed phylogenetic and genetic analysis of isolates from Ukraine, the vaccine strain and reference strains were used to phylogenetically identify trends in mutation locations and substitutions. Ukrainian isolates were collected between 2009-2017 and clustered in the influenza genetic groups 2, 6, 7, and 8. Genetic changes were observed in each of the antigenic sites: Sa - S162T, K163Q, K163I; Sb - S185T, A186T, S190G, S190R; Ca1 - S203T, R205K, E235V, E235D, S236P; Ca2 - P137H, H138R, A141T, D222G, D222N; Cb - A73S, S74R, S74N. In spite of detected mutations in antigenic sites, Ukrainian isolates retained similarity to the vaccine strain A/California/07/09 circulated during 2009-2017. However, WHO recommended a new vaccine strain A/Michigan/45/2015 for the Southern Hemisphere after the emergence of the new genetic groups 6B.1 and 6B.2. Our study demonstrated genetic variability of HA protein of A(H1N1)pdm09 viruses isolated in 2009-2017 in Ukraine. Influenza surveillance is very important for understanding epidemiological situations.
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