The study aims to evaluate the safety and immunogenicity of the 10-valent and 13-valent pneumococcal conjugate vaccines when administered in an accelerated schedule in Papua New Guinean children, who experience early dense upper respiratory tract colonisation with a broad range of pneumococcal serotypes, and to compare antibody titres following a booster dose of polysaccharide vaccine at 9 months with those children who received no booster at the same age.
Age range
28 Days – 35 Days
Sex
ALL
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Proportion of children with serotype-specific IgG concentration >= 0.35ug/ml at 4 and 9 months of age for 90% of PCV vaccine serotypes and proportion of children with OPA >=1:8 titres at 4, 10 and 24 months
Timeframe: 3 years