Journal Article Research Support, Non-U.S. Gov't 23-valent pneumococcal capsular polysaccharide vaccine 82115-62-6 9007-36-7 B-Cell Activation Factor Receptor B-cell activating factor Complement System Proteins Elderly Immunodeficiency Immunoglobulins Interferon-alpha Interferon-gamma Interleukins Late onset Lipopolysaccharide Receptors Lipopolysaccharides MBL2 protein, human Mannose binding lectin Mannose-Binding Lectin Observational Study Pneumococcal Vaccines Receptors, Interferon Respiratory tract infection STAT1 Transcription Factor STAT1 protein, human Specific anti-polysaccharide deficiency TNFRSF13C protein, human Tumor Necrosis Factor-alpha