{"nct_id":"NCT04142242","title":"Study to Assess the Safety and Immunogenicity of a Single Dose of a Quadrivalent Meningococcal (MenACYW) Conjugate Vaccine in Older Adults Who Received a Primary Vaccination (3 or More Years Earlier) in Study MET49","status":"COMPLETED","status_verified_date":"2025-09","start_date":"2019-10-04","start_date_type":"ACTUAL","primary_completion_date":"2020-04-01","primary_completion_date_type":"ACTUAL","completion_date":"2022-05-25","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["SNY"]}