title: [Influenza in 1998].
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).
authors.affiliation: Zakład Epidemiologii, Państwowego Zakładu Higieny, Warszawa.
authors.forename: K
authors.initials: K
authors.lastname: Kuszewski
authors.forename: L
authors.initials: L
authors.lastname: Brydak
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D007251:Influenza, Human / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D011044:Poland / Q000453:epidemiology