Influenza in Poland in 2005

• Published in: Przegląd epidemiologiczny Vol. 61; no. 2; p. 207
• Main Authors: Czarkowski, Mirosław P, Romanowska, Magdalena, Brydak, Lidia B
• Format: Journal Article
• Language: Polish
• Published: Poland 2007
• Subjects: Adolescent; Adult; Aged; Alphainfluenzavirus - isolation & purification; Child; Child, Preschool; Female; Fluorescent Antibody Technique; Humans; Incidence; Influenza A Virus, H1N1 Subtype - isolation & purification; Influenza A Virus, H3N2 Subtype - isolation & purification; Influenza B virus - isolation & purification; Influenza, Human - diagnosis; Influenza, Human - mortality; Influenza, Human - virology; Male; Middle Aged; Poland - epidemiology; Reverse Transcriptase Polymerase Chain Reaction; Poland
• ISSN: 0033-2100

A total number of 773,234 cases of influenza and influenza-like illness registered in Poland in 2004 (incidence 1921.4 per 100,000 population). Regionally the incidence ranged from 3391.8 per 100,000 population in Mazowieckie to 364.0 in Swietokrzyskie. Children and adolescents under 15 years of age accounted for 34.5% of all cases (age specific incidence 4045.3 per 100,000). In this age group the incidence varied regionally from 6381.1 in Mazowieckie to 797.6 in Swietokrzyskie. 1469 patients (0.20% of all cases) required hospital admission. There were 52 deaths due to influenza, in 82.7% these were persons over 70 years of age. In the epidemic season 2004/05 forty nine strains of influenza virus were isolated in Poland, including 2 strains of subtype A/H1, 23 strains of subtype A/H3 and 24 strains of type B. Antigenic analysis showed that they were similar to A/New Caledonia/20/99 (H1N1), A/Wyoming/3/2003 (H3N2), B/Hong Kong/330/2001 and B/Jiangsu/10/2003. Besides, RT-PCR method and immunofluorescence test allowed to confirm influenza in other 26 cases and infections with respiratory viruses as RSV, parainfluenza or adenovirus in other 25 cases.