Predominance of influenza A(H1N1)pdm09 virus genetic subclade 6B.1 and influenza B/Victoria lineage viruses at the start of the 2015/16 influenza season in Europe

Euro Surveill. 2016;21(13). doi: 10.2807/1560-7917.ES.2016.21.13.30184.

Abstract

Influenza A(H1N1)pdm09 viruses predominated in the European influenza 2015/16 season. Most analysed viruses clustered in a new genetic subclade 6B.1, antigenically similar to the northern hemisphere vaccine component A/California/7/2009. The predominant influenza B lineage was Victoria compared with Yamagata in the previous season. It remains to be evaluated at the end of the season if these changes affected the effectiveness of the vaccine for the 2015/16 season.

Keywords: A(H1N1)pdm09; emergence; influenza B virus; influenza virus; season; surveillance.

MeSH terms

  • Epidemiological Monitoring
  • Europe / epidemiology
  • Female
  • Hemagglutination Inhibition Tests
  • Humans
  • Influenza A Virus, H1N1 Subtype / classification
  • Influenza A Virus, H1N1 Subtype / genetics
  • Influenza A Virus, H1N1 Subtype / immunology*
  • Influenza A Virus, H1N1 Subtype / isolation & purification
  • Influenza B virus / classification
  • Influenza B virus / genetics
  • Influenza B virus / immunology*
  • Influenza B virus / isolation & purification
  • Influenza Vaccines / administration & dosage
  • Influenza Vaccines / immunology*
  • Influenza, Human / epidemiology
  • Influenza, Human / prevention & control*
  • Influenza, Human / virology*
  • Male
  • Molecular Epidemiology
  • RNA, Viral / genetics
  • Seasons
  • Sentinel Surveillance
  • Sequence Analysis, DNA
  • Treatment Outcome

Substances

  • Influenza Vaccines
  • RNA, Viral