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Updated: Aug 8, 2026

Rapid Molecular Detection and Differentiation of Influenza Viruses A and B
Published on: January 30, 2017
[Influenza in 1998]
1Zakład Epidemiologii, Państwowego Zakładu Higieny, Warszawa.
Abstract:
In Poland in 1998 total number of 825,345 cases of influenza were noted. It meant decrease in half (47.7%) of the number of cases registered in 1997. Cumulative incidence was 2134.5 per 100,000. It was 449,592 cases in children up to 14 years old. 489 persons were hospitalized which was 0.06% of reported cases. Percentage of hospitalizations decreased almost in half. Number of case fatalities due to influenza was 63. In January 1998 there were isolated four variants of Influenza virus of subtype A(H3N2). They were related to the variant included in the influenza vaccine used in epidemic season 1997/1998 (results of antigenic analysis was confirmed by WHO Collaborating Centre for Influenza Reference and Research, London).
Insights
In 1998, Poland saw a significant drop in influenza cases, with over 825,000 reported. Hospitalizations and fatalities also decreased, with four A(H3N2) variants identified, matching the seasonal vaccine.
Area of Science:
- Epidemiology
- Virology
Context:
- Influenza surveillance in Poland during 1998.
- Monitoring of influenza virus strains and their relation to vaccination.
Purpose:
- To report on the epidemiological situation of influenza in Poland in 1998.
- To detail the characteristics of isolated influenza virus variants.
Summary:
- Poland registered 825,345 influenza cases in 1998, a 47.7% decrease from 1997, with a cumulative incidence of 2134.5/100,000.
- Hospitalizations (0.06%) and fatalities (63) declined significantly. Four influenza A(H3N2) variants, antigenically similar to the 1997/1998 vaccine strain, were identified.
Impact:
- Provides crucial data on influenza trends and disease burden in Poland.
- Highlights the effectiveness of vaccination strategies and the importance of ongoing viral surveillance.
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