Pneumococcal vaccine for the "healthy elderly"?
D000367:Age Factors; D000368:Aged; D001428:Bacterial Vaccines / Q000627:therapeutic use*; D006801:Humans; D008875:Middle Aged; D011018:Pneumonia, Pneumococcal / Q000517:prevention & control; D013296:Streptococcus pneumoniae / Q000276:immunology*
D001428:Bacterial Vaccines