Dominant influenza A(H3N2) and B/Yamagata virus circulation in EU/EEA, 2016/17 and 2017/18 seasons, respectively

Euro Surveill. 2018 Mar;23(13):18-00146. doi: 10.2807/1560-7917.ES.2018.23.13.18-00146.

Abstract

We use surveillance data to describe influenza A and B virus circulation over two consecutive seasons with excess all-cause mortality in Europe, especially in people aged 60 years and older. Influenza A(H3N2) virus dominated in 2016/17 and B/Yamagata in 2017/18. The latter season was prolonged with positivity rates above 50% among sentinel detections for at least 12 weeks. With a current west-east geographical spread, high influenza activity might still be expected in eastern Europe.

Keywords: Europe; epidemiology; influenza; intensive care; mortality; severity; surveillance.

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Child
  • Child, Preschool
  • Disease Outbreaks
  • Europe / epidemiology
  • Female
  • Humans
  • Infant
  • Infant, Newborn
  • Influenza A Virus, H3N2 Subtype / isolation & purification*
  • Influenza B virus / isolation & purification*
  • Influenza, Human / diagnosis*
  • Influenza, Human / mortality
  • Influenza, Human / virology
  • Intensive Care Units / statistics & numerical data*
  • Male
  • Middle Aged
  • Population Surveillance / methods*
  • Seasons
  • Sentinel Surveillance
  • Severity of Illness Index
  • Young Adult