ECDC Interim Risk Assessment A(H1N1)v 21st August 2009

I have just read this report(http://ecdc.europa.eu/en/healthtopics/Documents/0908_Influenza_AH1N1_Risk_Assessment.pdf) and one of the interesting tables is the planning assumptions table 2.2.8 :-
Clinical Attack Rate 30%
Complication Rate 15%
Hospitalisation Rate 2%
Case Fatality Rate .1 to .2%
Peak absense Rate 12%
The peak absense rate is without doubt the most worrying statistic for business however 15% complication rate is much higher than i have seen predicted in the past.