This figure shows the notification rate of infectious syphilis, less than two years duration in persons aged 10 years and over, in Australia from 2006 to 2011, by age group and sex. Notification rates are typically lower among females than males across all age groups and years, except in the youngest and oldest age groups, where rates were typically higher among females. The figure shows that from 2010 to 2011, notification rates increased in all age groups and across both sexes, except among females aged 30 years and over.