{"nct_id":"NCT04537234","title":"Study to Assess the Immune Response and the Safety Profile of a High-Dose Quadrivalent Influenza Vaccine (QIV-HD) Compared to a Standard-Dose Quadrivalent Influenza Vaccine (QIV-SD) in Taiwanese Adults 65 Years of Age and Older","status":"COMPLETED","status_verified_date":"2025-09","start_date":"2020-11-10","start_date_type":"ACTUAL","primary_completion_date":"2021-02-09","primary_completion_date_type":"ACTUAL","completion_date":"2021-02-09","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["SNY"]}