Infectious Diseases, Streptococcus pneumoniae, Pneumococcus, PCV13, Pneumococcal Conjugate Vaccine, PPV23, Pneumococcal polysaccharide vaccine, Serotype 3, Pneumococcal Colonisation, Immunity
Streptococcus pneumoniae, serotype 3, serotype 6B, experimental human pneumococcal challenge model, PCV13, PPV23, humoral immunity