This figure shows the notification rates for all categories of non-congenital syphilis infection in Australia, from 2007 to 2012. The figure illustrates the notification rates of infectious syphilis, less than two years duration, and the notification rates for syphilis of more than two years or unknown duration. The figure demonstrates that between 2007 and 2011, infectious contributes slightly less to the total notification rates of all categories of non-congenital syphilis infection than syphilis of more than two years or unknown duration. However, in 2012, infectious syphilis contributes slightly more.