This figure shows the rates for mumps in Australia from 2008 to 2013, by age group. This figure demonstrates the greatest increase in age group rates occurring among young adults between 10 and 19 years of age (1.2 per 100,000 population), although they remain lower compared with the peak among this cohort in 2008 (2.6 per 100,000 population). The overall notification rate remains below 1 per 100,000 population.