{"nct_id":"NCT03918629","title":"Clostridium Difficile Vaccine 2-Dose Versus 3-Dose Study","status":"COMPLETED","status_verified_date":"2023-12","start_date":"2019-04-01","start_date_type":"ACTUAL","primary_completion_date":"2020-12-22","primary_completion_date_type":"ACTUAL","completion_date":"2020-12-22","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["PFE"]}