{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Varicella-zoster+vaccine",
    "query": {
      "intervention": "Varicella-zoster vaccine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 73,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Varicella-zoster+vaccine&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T05:59:53.047Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT00920218",
      "title": "Safety & Immunogenicity of GlaxoSmithKline Biologicals' Herpes Zoster Vaccine 1437173A",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Herpes Zoster"
      ],
      "interventions": [
        {
          "name": "Herpes Zoster Vaccine 1437173A",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo vaccine (saline)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 121,
      "start_date": "2009-07-14",
      "completion_date": "2012-03-21",
      "has_results": true,
      "last_update_posted_date": "2017-12-12",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 11,
      "location_summary": "Little Rock, Arkansas • Duarte, California • San Francisco, California + 8 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Minneota",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00920218"
    },
    {
      "nct_id": "NCT04128189",
      "title": "Shingrix in Renal Transplant Recipients",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Kidney Transplant Recipient Response to Shingrix Vaccine",
        "Kidney Failure",
        "Kidney Failure, Chronic",
        "Kidney Transplantation",
        "Herpes Zoster (HZ)"
      ],
      "interventions": [
        {
          "name": "Shingrix",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 132,
      "start_date": "2023-03-02",
      "completion_date": "2029-06",
      "has_results": false,
      "last_update_posted_date": "2026-04-08",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 4,
      "location_summary": "Aurora, Colorado • Atlanta, Georgia • Boston, Massachusetts + 1 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04128189"
    },
    {
      "nct_id": "NCT02052596",
      "title": "Study to Assess the Immunogenicity and Safety of GlaxoSmithKline (GSK) Biologicals' Herpes Zoster Subunit (HZ/su) Vaccine (GSK1437173A) When Co-administered With GSK Biologicals' Diphtheria, Tetanus and Pertussis Vaccine (Boostrix®) in Adults Aged 50 Years and Older",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Herpes Zoster"
      ],
      "interventions": [
        {
          "name": "Herpes Zoster vaccine GSK 1437173A",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Boostrix",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 935,
      "start_date": "2014-02-07",
      "completion_date": "2016-04-21",
      "has_results": true,
      "last_update_posted_date": "2018-04-24",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 13,
      "location_summary": "Tucson, Arizona • San Diego, California • Stockbridge, Georgia + 9 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Stockbridge",
          "state": "Georgia"
        },
        {
          "city": "Meridian",
          "state": "Idaho"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02052596"
    },
    {
      "nct_id": "NCT02538341",
      "title": "Safety and Effectiveness of Live Zoster Vaccine in Anti-Tumor Necrosis Factor (TNF) Users (VERVE Trial)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Rheumatoid Arthritis",
        "Inflammatory Arthritis",
        "Arthritis",
        "Psoriatic Arthritis",
        "Psoriasis",
        "Ankylosing Spondylitis",
        "Enteropathic Arthritis",
        "Crohn's Disease"
      ],
      "interventions": [
        {
          "name": "Herpes Zoster (HZ) Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 617,
      "start_date": "2016-05",
      "completion_date": "2020-12",
      "has_results": true,
      "last_update_posted_date": "2021-11-23",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 34,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Tuscaloosa, Alabama + 27 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Tuscaloosa",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02538341"
    },
    {
      "nct_id": "NCT02690207",
      "title": "Cross-vaccination Study of GSK Biologicals' Herpes Zoster Subunit (HZ/su) Vaccine (GSK 1437173A) in Subjects Who Previously Received Placebo in ZOSTER-006 (NCT01165177) and ZOSTER-022 (NCT01165229) Studies.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Herpes Zoster"
      ],
      "interventions": [
        {
          "name": "Herpes Zoster Vaccine GSK1437173A",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 8687,
      "start_date": "2016-03-16",
      "completion_date": "2019-03-15",
      "has_results": true,
      "last_update_posted_date": "2021-03-04",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 37,
      "location_summary": "Mesa, Arizona • Phoenix, Arizona • Tucson, Arizona + 31 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02690207"
    },
    {
      "nct_id": "NCT01911065",
      "title": "T Cell Responses to Varicella Zoster Virus (VZV) Vaccine SLVP020",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Herpes Zoster"
      ],
      "interventions": [
        {
          "name": "Zostavax™",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 54,
      "start_date": "2010-09",
      "completion_date": "2011-12",
      "has_results": true,
      "last_update_posted_date": "2023-12-18",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01911065"
    },
    {
      "nct_id": "NCT06605625",
      "title": "Vaccine Responses in Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Viral Vaccines"
      ],
      "interventions": [
        {
          "name": "Influenza vaccination",
          "type": "BIOLOGICAL"
        },
        {
          "name": "SARS-CoV-2 vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Zoster Vaccine Recombinant",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 250,
      "start_date": "2022-11-04",
      "completion_date": "2028-10",
      "has_results": false,
      "last_update_posted_date": "2025-10-28",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06605625"
    },
    {
      "nct_id": "NCT01483378",
      "title": "Increasing Use of the Vaccine Against Herpes Zoster/Shingles at NYULMC and Bellevue Hospital",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Herpes Zoster"
      ],
      "interventions": [
        {
          "name": "Choosing to receive the vaccine",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 170,
      "start_date": "2012-01",
      "completion_date": "2012-02",
      "has_results": true,
      "last_update_posted_date": "2013-08-09",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 2,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01483378"
    },
    {
      "nct_id": "NCT02590068",
      "title": "Effects of Chronic Viral Infection on Immune Response to Zoster Vaccination",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "Zoster vaccine live",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rockefeller University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "50 Years to 60 Years"
      },
      "enrollment_count": 14,
      "start_date": "2015-12",
      "completion_date": "2017-09-08",
      "has_results": true,
      "last_update_posted_date": "2019-12-18",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02590068"
    },
    {
      "nct_id": "NCT01049035",
      "title": "A Study of a Quadrivalent Meningococcal Tetanus Protein Conjugate Vaccine in Infants and Toddlers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Meningitis",
        "Meningococcal Infection"
      ],
      "interventions": [
        {
          "name": "Quadrivalent Meningococcal Polysaccharide (A, C, Y, and W-135) Tetanus Protein Conjugate",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Diphtheria and Tetanus Toxoids and Acellular Pertussis Adsorbed, Inactivated Poliovirus and Haemophilus B Conjugate (Tetanus Toxoid Conjugate) Vaccine Combined (DTaP-IPV/Hib combined)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "M-M-RII-Measles, Mumps, and Rubella Virus Vaccine Live",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Varicella Virus Vaccine Live",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pneumococcal 7-valent Conjugate Vaccine (Diphtheria CRM197 Protein)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pneumococcal 13-valent Conjugate Vaccine (Diphtheria CRM197 Protein)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Rotavirus Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Hepatitis B Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "42 Days",
        "maximum_age": "365 Days",
        "sex": "ALL",
        "summary": "42 Days to 365 Days"
      },
      "enrollment_count": 580,
      "start_date": "2009-12-16",
      "completion_date": "2012-02-13",
      "has_results": true,
      "last_update_posted_date": "2022-03-28",
      "last_synced_at": "2026-09-29T05:59:53.047Z",
      "location_count": 25,
      "location_summary": "Birmingham, Alabama • Tuscaloosa, Alabama • Jonesboro, Arkansas + 20 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tuscaloosa",
          "state": "Alabama"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01049035"
    }
  ]
}