This figure shows the notification rate per 100,000 for chlamydial infection in 2013, by age group and sex. The notification rate was highest for females in the 15?19 year and 20?24 year age groups (at 2,043 and 2,248 per 100,000 respectively). Notification rates for males were lower in almost all age groups. The highest notification rate for males was in the 20?24 year age group, at 1,427 per 100,000.