title: Interpreting vaccine efficacy.
authors.forename: Brian
authors.initials: B
authors.lastname: Greenwood
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D015994:Incidence; D007223:Infant; D011008:Pneumococcal Infections / Q000453:epidemiology / Q000517:prevention & control*; D022242:Pneumococcal Vaccines / Q000627:therapeutic use*; D013019:South Africa / Q000453:epidemiology
chemical_list: D022242:Pneumococcal Vaccines