This figure shows the notification rate of infectious syphilis, less than two years duration in Australia in 2011, by age group and sex. The figure shows that the notification rate of infectious syphilis was higher in males than in females across all age groups except the 10 to 14 years age group. The notification rate among females was highest in the 15 to 19 year age group, while the notification rate among males was highest in the 40 to 44 year age group.