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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.
