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Volume 17, Number 9—September 2011


Increased Extent of and Risk Factors for Pandemic (H1N1) 2009 and Seasonal Influenza among Children, Israel

Dan EngelhardComments to Author , Michal Bromberg, Diana Averbuch, Ariel Tenenbaum, Daniele Goldmann, Marina Kunin, Einat Shmueli, Ido Yatsiv, Michael Weintraub, Michal Mandelboim, Nurith Strauss-Liviatan, Emilia Anis, Ella Mendelson, Tamy Shohat, Dana G. Wolf, Mervyn Shapiro, and Itamar Grotto
Author affiliations: Author affiliations: Hadassah-Hebrew University Hospital, Ein Kerem, Jerusalem, Israel (D. Engelhard, D. Averbuch, E. Shmueli, I. Yatsiv, M. Weintraub, N. Strauss-Liviatan, D.G. Wolf); Monash University, Melbourne, Victoria, Australia (D. Engelhard, M. Kunin); Israel Center for Disease Control, Tel Hashomer, Israel (M. Bromberg, T. Shohat); Hadassah-Hebrew University Hospital, Mount-Scopus, Jerusalem (A. Tenebaum); Public Health Services, Health Ministry, Jerusalem (D. Goldmann, E. Anis, I. Grotto); Sheba Medical Center, Tel Hashomer (M. Mandelboim, E. Mendelson); Tel Aviv University, Tel Aviv, Israel (T. Shohat); Tel Aviv Sourasky Medical Center, Tel Aviv (M. Shapiro); Ben-Gurion University of the Negev, Beersheba, Israel (I. Grotto)

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Table 2

Comparison of children hospitalized at Hadassah University Hospitals, Israel, during pandemic (H1N1) 2009 and during influenza seasons for 2005–2009*

Parameter Pandemic (H1N1) 2009 Seasonal influenza p value
No. patients during 1 season 127 Median 20 (range 18–39)† NA
Children with influenza A/B 127/0 68/28 NA
Duration of hospitalization, wks 34 Median 16 (range 13–22) NA
No. (%) children who received antiviral treatment 98/127 (77.2) 0/96 <0.001
Patient age, mo, median (range) 51 (0.23–197.00) 6 (0.3–206.0) <0.001
No. (%) children with underlying chronic diseases 66 (52.0) 24 (25.0) <0.001
No. (%) children with underlying chronic lung disease 39/127 (30.7) 14 (14.6) 0.007
No. (%) children with neonatal fever as initial symptom 6/127(4.7) 26 (27.1) <0.001

*NA, not applicable.
†Total for all 4 years = 96.

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