Figure 6: Notification rates of laboratory confirmed influenza, Australia, 2004 to 2009, by age group This figure compares the age group distribution of influenza notifications over the 2004 to 2009 period. It highlights that traditionally the age distribution of notifications has rates highest in children aged less than 5 years and the elderly. 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.