{"nct_id":"NCT06838000","title":"Study of the Safety and Immunogenicity of Catch-up Vaccination With a 21-valent Pneumococcal Conjugate Vaccine (PCV21) in Healthy Infants, Toddlers, Children, and Adolescents","status":"ACTIVE_NOT_RECRUITING","status_verified_date":"2025-09","start_date":"2025-02-28","start_date_type":"ACTUAL","primary_completion_date":"2026-12-01","primary_completion_date_type":"ESTIMATED","completion_date":"2026-12-01","completion_date_type":"ESTIMATED","phases":["PHASE3"],"tickers":["SNY"]}