This figure shows the age standardised notification rates of chlamydial infection, in the Northern Territory, South Australia, Tasmania, and Western Australia, between 2006 and 2011, by Indigenous status. The figure shows that from 2006 to 2011, the age standardised notification rates were higher among the Indigenous population than the non-Indigenous population in all jurisdictions except Tasmania. The figure shows that from 2010 to 2011, age standardised notification rates among Indigenous people increased in all jurisdictions, while among non-Indigenous people, age standardised notification rates increased in South Australia and Western Australia, and decreased in the Northern Territory and Tasmania.