{"nct_id":"NCT00467519","title":"Safety and Immunogenicity of Tdap Vaccine Compared to DTaP Vaccine in Children 4 to 6 Years of Age","status":"COMPLETED","status_verified_date":"2014-01","start_date":"2007-04","start_date_type":null,"primary_completion_date":"2009-11","primary_completion_date_type":"ACTUAL","completion_date":"2009-12","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["SNY"]}