{"nct_id":"NCT00053482","title":"Dose Study of ACAM2000 Smallpox Vaccine in Previously Vaccinated Adults","status":"COMPLETED","status_verified_date":"2024-03","start_date":"2003-01","start_date_type":null,"primary_completion_date":"2003-04","primary_completion_date_type":"ACTUAL","completion_date":"2003-10","completion_date_type":"ACTUAL","phases":["PHASE2"],"tickers":["EBS"]}