[Influenza in Poland in 2007].
A total number of 374,042 cases of influenza and influenza-like illness were registered in Poland in 2007 (incidence 981.3 per 100,000 population). Compared to 2006 on 48.6% incidence increase was observed. Despite this increase influenza activity in 2007 was among the lowest during the last four decades. Regionally the incidence varied from 182.2 in pomorskie voivodeship to 2,957.1 in opolskie. Children and adolescents under 15 years of age accounted for 33% of all cases (age specific incidence 2,098.3). In this age group the incidence varied regionally from 398.8 in pomorskie voivodeship to 5,908.3 in opolskie. The highest reported incidence was observed in age group 0-4 years (2,240.7). 763 patients (0.20% of all cases) required hospital admission. There were 18 deaths due to influenza, of which 17 (94.4%) were among persons over 70 years of age. In the epidemic season 2006/07 infections with influenza virus registered in Poland were mainly caused by type A, similarly to other parts of Europe. Seventeen influenza strains were isolated, including 12 strains of subtype A/H1 and 5 strains of subtype A/H3. All of them were antigenically similar to the vaccine strains recommended for the epidemic season 2006/07.
Romanowska
Magdalena
M
Krajowy Ośrodek ds. Grypy, Narodowy Instytut Zdrowia Publicznego-PZH, Warszawa. nic@pzh.gov.pl
Czarkowski
Mirosław P
MP
Nowak
Iwona
I
Brydak
Lidia B
LB
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D053118:Influenza A Virus, H1N1 Subtype / Q000302:isolation & purification; D053122:Influenza A Virus, H3N2 Subtype / Q000302:isolation & purification; D007251:Influenza, Human / Q000175:diagnosis* / Q000453:epidemiology* / Q000821:virology; D029521:Alphainfluenzavirus / Q000302:isolation & purification; D008297:Male; D008875:Middle Aged; D011044:Poland / Q000453:epidemiology; D012424:Rural Population / Q000706:statistics & numerical data; D014505:Urban Population / Q000706:statistics & numerical data