Prevention of pneumococcal pneumonia by immunization with pneumococcal polysaccharide vaccine (Pneumovax).
D001428:Bacterial Vaccines / Q000627:therapeutic use*; D002675:Child, Preschool; D006801:Humans; D008875:Middle Aged; D011018:Pneumonia, Pneumococcal / Q000517:prevention & control*; D011135:Polysaccharides, Bacterial / Q000627:therapeutic use*; D013296:Streptococcus pneumoniae / Q000276:immunology*; D014611:Vaccination
D001428:Bacterial Vaccines; D011135:Polysaccharides, Bacterial