{"nct_id":"NCT04949490","title":"A Trial Investigating the Safety and Effects of One or Two Additional Doses of Comirnaty or One Dose of BNT162b2s01 in BNT162-01 or BNT162-04 Trial Subjects","status":"COMPLETED","status_verified_date":"2024-05","start_date":"2021-07-26","start_date_type":"ACTUAL","primary_completion_date":"2022-04-14","primary_completion_date_type":"ACTUAL","completion_date":"2022-09-16","completion_date_type":"ACTUAL","phases":["PHASE2"],"tickers":["BNTX"]}