title: [Pertussis epidemics and changes in the immunization schedules: Chile, 2012: unanswered questions?].
authors: Felipe C
authors: FC
authors: Cabello
mesh_terms: D002677:Chile / Q000453:epidemiology; D058872:Epidemics; D006801:Humans; D007115:Immunization Schedule; D010567:Pertussis Vaccine / Q000008:administration & dosage*; D014917:Whooping Cough / Q000453:epidemiology / Q000517:prevention & control*
chemical_list: D010567:Pertussis Vaccine