Figure 3
From: Trends of rubella incidence during a 5-year period of case based surveillance in Zimbabwe
Age incidence of laboratory confirmed rubella, 2007–2011, Zimbabwe. The graph shows age incidence of rubella infection during each year. The incidence rises from 3 to 11 years of age and starts to decline. Cases older than 15 years were also detected by the surveillance. These represent susceptible build-up in older age groups of the female population following local extinction of rubella in the inter-epidemic periods.