National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine research support non-u.s. gov't female male Infant Clinical Trial Randomized Controlled Trial Double-Blind Method Incidence Bacterial drug resistance hiv infections / complications* pneumonia vaccines serotyping pneumococcal infections / mortality pneumococcal infections / prevention & control* pmid:14523142 doi:10.1056/nejmoa035060 keith p klugman shabir a madhi vaccine trialists group bacterial capsules haemophilus vaccines pneumococcal vaccines* / adverse effects pneumococcal / prevention & control polysaccharides streptococcus pneumoniae / classification streptococcus pneumoniae / isolation & purification conjugate / adverse effects