{"nct_id":"NCT00581620","title":"Study Evaluating Prevenar Immunogenicity in High Risk Children","status":"COMPLETED","status_verified_date":"2007-12","start_date":"2002-11","start_date_type":null,"primary_completion_date":null,"primary_completion_date_type":null,"completion_date":"2007-09","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["PFE"]}