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Virological and Epidemiological Situation in the Influenza Epidemic Seasons 2016/2017 and 2017/2018 in Poland

E Hallmann-Szelińska1, K Łuniewska2, K Szymański2

  • 1Department of Influenza Research - National Influenza Center, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland. ehallmann@pzh.gov.pl.

Advances in Experimental Medicine and Biology
|December 14, 2019
PubMed

Insights

Influenza remains a significant global health concern, with Poland experiencing high incidence rates. Despite available quadrivalent vaccines, vaccination rates in Poland remain critically low, posing a public health challenge.

Area of Science:

  • Epidemiology
  • Public Health
  • Virology

Background:

  • Influenza virus causes millions of infections and hundreds of thousands of deaths globally each year.
  • Poland observed high influenza incidence in the 2016/2017 and 2017/2018 seasons, with shifts in predominant strains (A/H3N2/ then Influenza B).
  • Despite the availability of quadrivalent influenza vaccines since the 2017/2018 season, vaccination coverage in Poland remains exceptionally low (3-4%).

Purpose of the Study:

  • To analyze influenza incidence and predominant strains in Poland during the 2016/2017 and 2017/2018 epidemic seasons.
  • To highlight the low influenza vaccination rates in Poland despite vaccine availability.
  • To underscore the public health implications of low vaccine uptake.

Main Methods:

  • Analysis of influenza incidence data per 100,000 population.
  • Identification of predominant influenza A and B virus strains.
  • Review of vaccination coverage statistics in Poland.

Main Results:

  • Influenza incidence in Poland was 1,692/100,000 (2016/2017) and over 1,782/100,000 (2017/2018).
  • Influenza A/H3N2/ predominated in 2016/2017; Influenza B and A/H1N1/pdm09 were most frequent in 2017/2018.
  • Peak incidence occurred in weeks 4-5 of 2017 and week 8 of 2018.
  • Poland's influenza vaccination rate is among Europe's lowest, at 3-4%.

Conclusions:

  • Poland faces a substantial burden from seasonal influenza, with varying dominant strains.
  • Low influenza vaccination coverage in Poland presents a significant public health challenge.
  • Strategies to improve influenza vaccine uptake are crucial for mitigating disease impact.
Keywords:
Disease incidenceEpidemic seasonEpidemiologyInfectionInfluenzaVaccination rateViral subtypes

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