Efficacy of pneumococcal vaccine.
D001428:Bacterial Vaccines; D006801:Humans; D008433:Mathematics; D011008:Pneumococcal Infections / Q000517:prevention & control*; D022242:Pneumococcal Vaccines; D012703:Serotyping; D013296:Streptococcus pneumoniae / Q000145:classification
D001428:Bacterial Vaccines; D022242:Pneumococcal Vaccines