{"nct_id":"NCT04300192","title":"Study to Evaluate the Immune Response After Booster Vaccination With Tdap-IPV Vaccine (Against Tetanus, Diphtheria, Pertussis and Poliomyelitis) in Children Who Received Different Pertussis Primary Vaccine Regimens in Republic of South Africa","status":"COMPLETED","status_verified_date":"2025-09","start_date":"2021-01-27","start_date_type":"ACTUAL","primary_completion_date":"2023-01-11","primary_completion_date_type":"ACTUAL","completion_date":"2023-01-11","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["SNY"]}