Whooping-cough vaccination.
D002675:Child, Preschool; D005069:Evaluation Studies as Topic; D006801:Humans; D007223:Infant; D009864:Ontario; D010567:Pertussis Vaccine / Q000627:therapeutic use*; D014611:Vaccination; D014917:Whooping Cough / Q000401:mortality
D010567:Pertussis Vaccine