title: Pneumococcal polysaccharide immunization.
mesh_terms: D000328:Adult; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007167:Immunotherapy; D007223:Infant; D008297:Male; D011018:Pneumonia, Pneumococcal / Q000276:immunology*; D011135:Polysaccharides, Bacterial; D013296:Streptococcus pneumoniae; D014612:Vaccines
chemical_list: D011135:Polysaccharides, Bacterial; D014612:Vaccines