Streptococcus pneumoniae serotype 1 (ST1) was an important cause of invasive pneumococ-cal disease (IPD) globally before the introduction of pneumococcal conjugate vaccines (PCVs) con-taining ST1 antigen. The Pneumococcal Serotype Replacement and ...

Pneumococci are commonly carried asymptomatically in the nasopharynx, especially in children. Pneumococci are also one of the major bacterial pathogens causing both severe infections and non-severe infections in both children and adults. The most severe ...