Pneumococcal infection.
D000367:Age Factors; D001428:Bacterial Vaccines / Q000592:standards; D003365:Costs and Cost Analysis; D004352:Drug Resistance, Microbial; D004467:Economics; D006801:Humans; D008875:Middle Aged; D010033:Otitis Media / Q000382:microbiology; D011008:Pneumococcal Infections / Q000453:epidemiology / Q000401:mortality* / Q000517:prevention & control; D011014:Pneumonia / Q000453:epidemiology / Q000401:mortality; D012306:Risk; D014481:United States
D001428:Bacterial Vaccines