{"nct_id":"NCT06623409","title":"Safety and Immunogenicity of V540B in Healthy Adults (V540B-002).","status":"ACTIVE_NOT_RECRUITING","status_verified_date":"2025-07","start_date":"2024-11-12","start_date_type":"ACTUAL","primary_completion_date":"2026-11-20","primary_completion_date_type":"ESTIMATED","completion_date":"2026-11-20","completion_date_type":"ESTIMATED","phases":["PHASE1"],"tickers":["MRK"]}