This figure shows notified cases of IPD in Australia for the third quarter of 2014, by 5 year age groups. The figure demonstrates notified cases were highest in the under 5 year olds, followed by 85 years and older age group. While this distribution was evident in non-Indigenous cases, in Indigenous cases IPD was most prevalent in cases aged 50 to 54 years and those aged 45 to 49 years.