title: Hidden bonus from vaccination.
authors.forename: Ewen
authors.initials: E
authors.lastname: Callaway
mesh_terms: D000349:Africa / Q000453:epidemiology; D003906:Developing Countries / Q000191:economics / Q000706:statistics & numerical data; D004352:Drug Resistance, Microbial / Q000187:drug effects; D006801:Humans; D010406:Penicillins / Q000494:pharmacology / Q000627:therapeutic use; D011018:Pneumonia, Pneumococcal / Q000188:drug therapy / Q000453:epidemiology / Q000276:immunology* / Q000517:prevention & control*; D013296:Streptococcus pneumoniae / Q000276:immunology*; D014481:United States / Q000453:epidemiology; D014611:Vaccination / Q000191:economics / Q000706:statistics & numerical data*
chemical_list: D010406:Penicillins