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Chickenpox in Poland in 2020.

Joanna Bogusz1, Iwona Paradowska-Stankiewicz1

  • 1National Institute of Public Health NIH - National Research Institute, Department of Epidemiology of Infectious Diseases and Surveillance.

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|April 5, 2023
PubMed
Summary

Chickenpox cases in Poland significantly decreased in 2020, likely due to COVID-19 pandemic public health measures. This study analyzes the varicella virus epidemiological situation and its reduction in incidence.

Area of Science:

  • Epidemiology
  • Infectious Diseases
  • Public Health

Background:

  • Chickenpox, caused by the highly contagious varicella-zoster virus, is a common childhood illness.
  • Global vaccination programs have drastically reduced chickenpox incidence and related hospitalizations.
  • Poland has observed an increasing trend in chickenpox cases since 2002, with an exception in 2020.

Purpose of the Study:

  • To evaluate the 2020 epidemiological status of chickenpox in Poland.
  • To compare the 2020 chickenpox data with previous years' epidemiological trends.

Main Methods:

  • Analysis of aggregate data from "Infectious diseases and poisonings in Poland in 2020" and "Vaccinations in Poland in 2020" bulletins.
  • Inclusion of recommendations from the 2020 Protective Vaccination Program.
Keywords:
2020Polandchickenpoxepidemiology

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  • Evaluation based on published annual epidemiological reports.

    • Main Results:

    • A total of 71,567 chickenpox cases were recorded in Poland in 2020, a 39.6% decrease from the prior year.
    • The incidence rate was 186.6 per 100,000 population, with variations across voivodeships.
    • The majority of cases occurred in children aged 0-4 years; incidence was higher in males and in rural populations.

    Conclusions:

    • The observed decrease in chickenpox cases in 2020 is attributed to reduced varicella virus transmission.
    • Public health behaviors adopted during the COVID-19 pandemic, including isolation and lockdown measures, likely contributed to this decline.
    • The epidemiological situation in 2020 reflects a significant, albeit potentially temporary, reduction in chickenpox incidence.