Figure 7: Rates of laboratory confirmed influenza, Australia, 2009, by subtype and age group* This figure further supports the previous figure, highlighting that in 2009 notifications however were highest in younger age groups, peaking in the 10-14 years age group, with a downward trend with increasing age. This figure has included the types and subtypes of influenza that was notified across each age group to highlight the predominance of the influenza A(H1N1)pdm09 especially among younger age groups and therefore likely driving a change in the traditionally observed age distribution of cases.