PNEUMONIA prevention with pneumococcus polysaccharides.
D006801:Humans; D022242:Pneumococcal Vaccines; D011014:Pneumonia; D011134:Polysaccharides; D013296:Streptococcus pneumoniae
D022242:Pneumococcal Vaccines; D011134:Polysaccharides
PNEUMOCOCCUS/polysaccharide prevents pneumonia; PNEUMONIA/prevention, with polysaccharide; POLYSACCHARIDE/pneumococcal