Figure 1 - This figure shows all notified cases of IPD in Australia between 2002 and 2017 by year and also 2007 and 2017 by quarter, and the vaccine serotype group causing disease. The figure demonstrates that notified cases have declined following the introductions of the 7vPCV in 2005 and the 13vPCV in 2011. Relative to other serotypes, disease caused by 7vPCV is occurring rarely in recent quarters. Disease caused by the six additional serotypes targeted by the 13vPCV have declined since the 13vPCV replaced the 7vPCV in the universal childhood immunisation program, however more recently this rate of decline has slowed. Since 2011 the number of cases due to the eleven serotypes additionally covered by the 23-valent pneumococcal polysaccharide vaccine (23vPPV) and also those serotypes not covered by any available vaccine has been increasing steadily across all age groups