title: Drug utilization.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001428:Bacterial Vaccines / Q000008:administration & dosage*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D008875:Middle Aged; D011008:Pneumococcal Infections / Q000517:prevention & control*; D022242:Pneumococcal Vaccines; D017410:Practice Guidelines as Topic; D013296:Streptococcus pneumoniae / Q000276:immunology*; D014611:Vaccination
chemical_list: D001428:Bacterial Vaccines; D022242:Pneumococcal Vaccines