Figure 2a is a line graph showing adverse events following immunisation for people aged ≥7 years for frequently reported vaccines (MenCCV, Seasonal influenza, HPV, pH1N1, and 23vPPV), by year (2000 to 2012), by quarter vaccinated. A decline was observed in reports in 2012 which was predominantly associated with a drop in reports following 23vPPV vaccines in adults.