{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Varicella+vaccine",
    "query": {
      "intervention": "Varicella vaccine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 118,
    "total_pages": 12,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Varicella+vaccine&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T02:41:44.725Z",
  "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": "NCT06397768",
      "title": "Co-administration Study of an Investigational Live-Attenuated Respiratory Syncytial Virus Vaccine in Infants and Toddlers",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "RSV Immunization"
      ],
      "interventions": [
        {
          "name": "RSVt vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Diphtheria, tetanus, pertussis, poliomyelitis , Haemophilus influenzae type b, and hepatitis B vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Diphtheria, tetanus, pertussis, Haemophilus influenzae type b and poliomyelitis vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Hepatitis B vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Streptococcus pneumoniae vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Rotavirus vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Measles, mumps, and rubella vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Varicella virus vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "12 Months",
        "sex": "ALL",
        "summary": "6 Months to 12 Months"
      },
      "enrollment_count": 2226,
      "start_date": "2024-05-13",
      "completion_date": "2025-09-18",
      "has_results": false,
      "last_update_posted_date": "2026-02-03",
      "last_synced_at": "2026-09-25T02:41:44.725Z",
      "location_count": 66,
      "location_summary": "Birmingham, Alabama • Grand Bay, Alabama • Mobile, Alabama + 55 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Grand Bay",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Bell Gardens",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06397768"
    },
    {
      "nct_id": "NCT03798691",
      "title": "Immunogenicity of Herpes Zoster Subunit Vaccine in Inflammatory Bowel Disease Patients Treated With Vedolizumab",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Inflammatory Bowel Diseases",
        "Crohn Disease",
        "Ulcerative Colitis",
        "Herpes Zoster"
      ],
      "interventions": [
        {
          "name": "Shingrix",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "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": 33,
      "start_date": "2019-05-28",
      "completion_date": "2024-09-10",
      "has_results": true,
      "last_update_posted_date": "2025-04-02",
      "last_synced_at": "2026-09-25T02:41:44.725Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03798691"
    },
    {
      "nct_id": "NCT01610414",
      "title": "Study to Evaluate Efficacy, Safety, and Immunogenicity of GlaxoSmithKline (GSK) Biologicals' Herpes Zoster Vaccine GSK1437173A",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Herpes Zoster"
      ],
      "interventions": [
        {
          "name": "Herpes Zoster vaccine GSK1437173A",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "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": 1877,
      "start_date": "2012-07-13",
      "completion_date": "2017-02-01",
      "has_results": true,
      "last_update_posted_date": "2018-01-23",
      "last_synced_at": "2026-09-25T02:41:44.725Z",
      "location_count": 23,
      "location_summary": "Duarte, California • San Francisco, California • Aurora, Colorado + 16 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Westwood",
          "state": "Kansas"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01610414"
    },
    {
      "nct_id": "NCT01137669",
      "title": "ZOSTAVAX® in Renal Transplant Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Herpes Zoster"
      ],
      "interventions": [
        {
          "name": "Live attenuated herpes zoster vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 34,
      "start_date": "2010-09",
      "completion_date": "2015-02",
      "has_results": false,
      "last_update_posted_date": "2017-01-09",
      "last_synced_at": "2026-09-25T02:41:44.725Z",
      "location_count": 3,
      "location_summary": "Iowa City, Iowa • Baltimore, Maryland • Nashville, Tennessee",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01137669"
    },
    {
      "nct_id": "NCT04047979",
      "title": "Systems Biology of Zoster Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Zoster",
        "Zoster Varicella",
        "Shingles",
        "Chicken Pox"
      ],
      "interventions": [
        {
          "name": "Shingrix®",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 38,
      "start_date": "2019-11-14",
      "completion_date": "2023-10-30",
      "has_results": true,
      "last_update_posted_date": "2024-07-30",
      "last_synced_at": "2026-09-25T02:41:44.725Z",
      "location_count": 1,
      "location_summary": "Decatur, Georgia",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04047979"
    },
    {
      "nct_id": "NCT06740630",
      "title": "A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine When Given to Healthy Children 12 to 15 Months of Age",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chickenpox"
      ],
      "interventions": [
        {
          "name": "Investigational varicella vaccine_Lot 1",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Investigational varicella vaccine_Lot 2",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Investigational varicella vaccine_Lot 3",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Marketed varicella vaccine_Lot 1",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Marketed varicella vaccine_Lot 2",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MMR vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Hepatitis A vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PCV (pneumococcal conjugate vaccine) 13",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PCV 20",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Vaxneuvance",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Months",
        "maximum_age": "15 Months",
        "sex": "ALL",
        "summary": "12 Months to 15 Months"
      },
      "enrollment_count": 1840,
      "start_date": "2025-01-10",
      "completion_date": "2027-05-17",
      "has_results": false,
      "last_update_posted_date": "2026-05-29",
      "last_synced_at": "2026-09-25T02:41:44.725Z",
      "location_count": 59,
      "location_summary": "Mobile, Alabama • Hot Springs, Arkansas • Sherwood, Arkansas + 50 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "Sherwood",
          "state": "Arkansas"
        },
        {
          "city": "Canoga Park",
          "state": "California"
        },
        {
          "city": "Covina",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06740630"
    },
    {
      "nct_id": "NCT00626327",
      "title": "Safety and Immune Response of Novartis MenACWY-CRM Conjugate Vaccine When Given to Healthy Toddlers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Meningococcal Infections"
      ],
      "interventions": [
        {
          "name": "MenACWY-CRM + MMRV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MMRV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MenACWY-CRM",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novartis Vaccines",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Months",
        "maximum_age": "1 Year",
        "sex": "ALL",
        "summary": "7 Months to 1 Year"
      },
      "enrollment_count": 1630,
      "start_date": "2008-02",
      "completion_date": "2010-10",
      "has_results": true,
      "last_update_posted_date": "2013-04-19",
      "last_synced_at": "2026-09-25T02:41:44.725Z",
      "location_count": 90,
      "location_summary": "Birmingham, Alabama • Dothan, Alabama • Greenville, Alabama + 69 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Dothan",
          "state": "Alabama"
        },
        {
          "city": "Greenville",
          "state": "Alabama"
        },
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Bentonville",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00626327"
    },
    {
      "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": "2026-09-25T02:41:44.725Z",
      "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": "NCT00505063",
      "title": "Prospective Trial of Vaccine Responses in Childhood Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Childhood Cancer",
        "Multiple Diseases"
      ],
      "interventions": [
        {
          "name": "Immunization Schedule patients <7 years.",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Immunization Schedule patients > or = to 7 years and <11 years of age",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Immunization Schedule patients > or = to 11 years of age",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "2 Years to 18 Years"
      },
      "enrollment_count": 75,
      "start_date": "2007-07-10",
      "completion_date": "2025-06-11",
      "has_results": true,
      "last_update_posted_date": "2026-07-29",
      "last_synced_at": "2026-09-25T02:41:44.725Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00505063"
    },
    {
      "nct_id": "NCT07406360",
      "title": "A Study on the Immune Response and Safety of an Investigational Combined Measles, Mumps, Rubella and Varicella Vaccine, When Administered as Intramuscular Injection to Healthy Children 15 Months to 6 Years of Age",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Measles",
        "Measles-Mumps-Rubella+Chickenpox Vaccine"
      ],
      "interventions": [
        {
          "name": "MMRVNS",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MMRV",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "15 Months",
        "maximum_age": "6 Years",
        "sex": "ALL",
        "summary": "15 Months to 6 Years"
      },
      "enrollment_count": 1209,
      "start_date": "2026-05-11",
      "completion_date": "2028-07-20",
      "has_results": false,
      "last_update_posted_date": "2026-07-08",
      "last_synced_at": "2026-09-25T02:41:44.725Z",
      "location_count": 17,
      "location_summary": "Birmingham, Alabama • Walnut Creek, California • Miami, Florida + 12 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Walnut Creek",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07406360"
    }
  ]
}