The need for a pneumococcal vaccine.
D000328:Adult; D001428:Bacterial Vaccines / Q000276:immunology / Q000600:supply & distribution*; D006801:Humans; D008875:Middle Aged; D011008:Pneumococcal Infections / Q000453:epidemiology / Q000517:prevention & control; D011018:Pneumonia, Pneumococcal / Q000453:epidemiology / Q000517:prevention & control; D013296:Streptococcus pneumoniae / Q000276:immunology*; D006113:United Kingdom
D001428:Bacterial Vaccines