Figure 4
From: Invasive meningococcal disease epidemiology and control measures: a framework for evaluation
Estimated number of cases with and without routine vaccination of adolescents at steady state†. The dashed line ('Only direct effects') represents the estimated number of cases with vaccination, but assuming no herd immunity. † Steady state refers to years when all individuals in the simulation between the ages of 12 and 100 years have been eligible for vaccination under the routine program.