title: [Influenza in Poland in 2004].
abstract: A total number of 336,919 cases of influenza and influenza-like illness registered in Poland in 2004 (incidence 882.4 per 100 000 population). Regionally the incidence ranged from 226.2 per 100 000 population in Podlaskie to 2,122.3 in Mazowieckie. Children and adolescents under 15 years of age accounted for 30.5% of all cases (age specific incidence 1,588.2 per 100,000). In this age group the incidence varied regionally from 388,7 in Slaskie to 3,718.2 in Mazowieckie. 1,038 patients (0.31% of all cases) required hospital admission. There were 27 deaths due to influenza, in 85.2% these were persons over 70 years of age. In the epidemic season 2003/2004 six strains of influenza A/H3N2 virus were isolated in Poland. Antigenic analysis performed by the National Influenza Center showed that they were similar to strains A/Panama/2007/99 and A/Korea/770/02. Besides, in other 8 cases influenza A infection was confirmed by direct immunofluorescence test.
authors.affiliation: Zakład Epidemiologii Pańistwowego Zakładu Higieny, Warszawa. mpc@pzh.gov.pl
authors.forename: Mirosław P
authors.initials: MP
authors.lastname: Czarkowski
authors.forename: Magdalena K
authors.initials: MK
authors.lastname: Machała
authors.forename: Lidia B
authors.initials: LB
authors.lastname: Brydak
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004196:Disease Outbreaks / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D015994:Incidence; D053122:Influenza A Virus, H3N2 Subtype; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology; D008297:Male; D008875:Middle Aged; D011044:Poland / Q000453:epidemiology; D012423:Rural Health / Q000706:statistics & numerical data; D013045:Species Specificity; D015996:Survival Rate; D014504:Urban Health / Q000706:statistics & numerical data