title: [Influenza in Poland in 2001].
abstract: In 2001 the number of cases of influenza and influenza-like illness (ILI) registered in Poland amounted to 576,449. This is 36.1% of the number of cases recorded in 2000. The highest influenza incidence was found in Dolnoślaskie voivodship (3013.4 per 100,000), Mazowieckie voivodship (2688.5 per 100,000) and Zachodniopomorskie voivodship (2132.2 per 100,000). In children aged 0 to 14 years the number of influenza and ILI cases amounted to 275,358 (incidence was 3851.4 per 100,000) and this is 47.8% of the total number of cases recorded in 2001. The number of patients referred to hospitals amounted to 678 and 26 persons died. One influenza strain A(H1N1) was isolated from the patient aged 10. Immunofluorescence tests carried out in over 900 specimens did not confirm infection with influenza virus. Sero-surveys performed in the epidemic season 2001/2002 showed that the levels of antihemagglutinin antibodies were comparable for three antigens: A(H1N1), A(H3N2) and B. The highest antibody titers were recorded in the age group 15-25. Since May 2001 Poland is a member of the European Influenza Surveillance Scheme.
authors.affiliation: Zakład Epidemiologii Państwowego Zakładu Higieny ul. Chocimska 24, 00-791 Warszawa. kkuszewski@pzh.gov.pl
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Kuszewski
authors.forename: Lidia B
authors.initials: LB
authors.lastname: Brydak
authors.forename: Magdalena
authors.initials: M
authors.lastname: Machała
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002669:Child Welfare / Q000706:statistics & numerical data; D002675:Child, Preschool; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D009980:Influenza A virus / Q000302:isolation & purification*; D009981:Influenza B virus / Q000302:isolation & purification*; D007251:Influenza, Human / Q000175:diagnosis* / Q000453:epidemiology* / Q000821:virology; D008297:Male; D032541:Mass Vaccination / Q000706:statistics & numerical data; D008875:Middle Aged; D011044:Poland / Q000453:epidemiology; D012307:Risk Factors; D017678:Sex Distribution