Figure 1 - This figure shows notifications of IPD in children aged less than 5 years in Australia between 2002 and the first quarter of 2013 by quarter and the serotype causing disease, grouped according to targeted vaccines. The figure demonstrates that quarterly notifications have decreased significantly since the beginning of 2005, with disease caused by the 7vPCV extremely rare. Inversely, disease caused by the 6 additional serotypes targeted by the 13vPCV increased steadily over the period 2007 to 2011.