{"nct_id":"NCT01391546","title":"Immunogenicity and Safety Study of ZOSTAVAX Administered by Intramuscular or Subcutaneous Route to Participants Aged From 50 Years Old (V211-045)","status":"COMPLETED","status_verified_date":"2018-12","start_date":"2011-06-20","start_date_type":"ACTUAL","primary_completion_date":"2012-10-15","primary_completion_date_type":"ACTUAL","completion_date":"2012-10-15","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["MRK"]}