Potential carrier priming effect in Australian infants after 7-valent pneumococcal conjugate vaccine introduction

Figure 1 Flowchart showing the selection process of analysed cases and their median ages. ¹Australian non-Indigenous immunocompetent infants with receipt of first dose of 7vPCV after diphtheria, tetanus and acellular pertussis vaccine. NNDSS: National Notifiable Diseases Surveillance System; 7vPCV: 7-valent pneumococcal conjugate vaccine; VT-IPD: Vaccine type invasive pneumococcal disease; NVT-IPD: Non-vaccine type invasive pneumococcal disease.