{"nct_id":"NCT04969276","title":"Study of a Quadrivalent High-Dose Influenza Vaccine and a Moderna COVID-19 Vaccine Administered Either Concomitantly or Singly in Participants 65 Years of Age and Older Previously Vaccinated With a 2-dose Schedule of Moderna COVID-19 Vaccine","status":"COMPLETED","status_verified_date":"2025-09","start_date":"2021-07-16","start_date_type":"ACTUAL","primary_completion_date":"2022-02-08","primary_completion_date_type":"ACTUAL","completion_date":"2022-02-08","completion_date_type":"ACTUAL","phases":["PHASE2"],"tickers":["SNY"]}