Differential age susceptibility to influenza B/Victoria lineage viruses in the 2015 Australian influenza season

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Influenza B viruses make up an important part of the burden from seasonal influenza globally. The 2015 season in Australia saw an unusual predominance of influ-enza B with a distinctive switch during the season from B/Yamagata/16/88 lineage viruses to B/Victoria/2/87 lineage viruses. We also noted significant differences in the age groups infected by the different B lineages, with B/Victoria infecting a younger population than B/Yamagata, that could not be explained by potential prior exposure.
Original languageEnglish
Article number21362
Number of pages9
Issue number4
Publication statusPublished - 28 Jan 2016
Externally publishedYes


  • epidemiology
  • influenza
  • laboratory
  • laboratory surveillance
  • molecular methods
  • public health policy
  • statistics
  • surveillance
  • vaccines and immunisation
  • viral infections

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