{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Fluzone+High+Dose+Vaccine&page=5",
    "query": {
      "intervention": "Fluzone High Dose Vaccine",
      "page": 5
    },
    "page_size": 10
  },
  "pagination": {
    "page": 5,
    "page_size": 10,
    "total_count": 142,
    "total_pages": 15,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Fluzone+High+Dose+Vaccine&page=6&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Fluzone+High+Dose+Vaccine&page=4&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-15T18:46:24.095Z",
  "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": "NCT02035696",
      "title": "Safety and Immunogenicity of a Four Influenza Vaccines in Children Ages 6 Months Old to Less Than 48 Months Old",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Trivalent influenza vaccine (TIVc)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trivalent influenza vaccine-licensed",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Seqirus",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "48 Months",
        "sex": "ALL",
        "summary": "6 Months to 48 Months"
      },
      "enrollment_count": 671,
      "start_date": "2013-12",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2018-07-10",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 21,
      "location_summary": "Phoenix, Arizona • Tucson, Arizona • Little Rock, Arkansas + 15 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Ontario",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02035696"
    },
    {
      "nct_id": "NCT05227001",
      "title": "A Study To Learn About The Study Vaccine (Called Self-Amplifying Ribonucleic Acid (RNA)) For The Prevention of Influenza",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "PF-07852352 Influenza saRNA 1",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PF-07836391 Influenza saRNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PF-07836394 Influenza saRNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PF-07836395 Influenza saRNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PF-07836396 Influenza saRNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PF-07867246 Influenza saRNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quadrivalent influenza vaccine (QIV)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PF-07871987 Influenza saRNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PF-07914705 Influenza saRNA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PF-07915048 Influenza saRNA",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 440,
      "start_date": "2022-04-28",
      "completion_date": "2023-08-04",
      "has_results": false,
      "last_update_posted_date": "2026-03-20",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 24,
      "location_summary": "Phoenix, Arizona • Walnut Creek, California • Greenacres City, Florida + 13 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Walnut Creek",
          "state": "California"
        },
        {
          "city": "Greenacres City",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05227001"
    },
    {
      "nct_id": "NCT01430819",
      "title": "Study of Fluzone® Influenza Virus Vaccine 2011-2012 Formulation (Intramuscular Route) Among Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Influenza Virus Vaccine: Fluzone® 2011-2012 Formulation",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Influenza Virus Vaccine: Fluzone® High-Dose 2011-2012 Formulation",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2011-09",
      "completion_date": "2012-02",
      "has_results": true,
      "last_update_posted_date": "2013-05-27",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 6,
      "location_summary": "Colorado Springs, Colorado • Council Buffs, Iowa • Metairie, Louisiana + 3 more",
      "locations": [
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        },
        {
          "city": "Council Buffs",
          "state": "Iowa"
        },
        {
          "city": "Metairie",
          "state": "Louisiana"
        },
        {
          "city": "Springfield",
          "state": "Missouri"
        },
        {
          "city": "Bensalem",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01430819"
    },
    {
      "nct_id": "NCT01215734",
      "title": "Standard vs High-Dose Trivalent Inactivated Flu Vaccine in Adult Hematopoetic Stem Cell Transplant (HSCT) Recipients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Adult Stem Cell Hematopoetic Transplant"
      ],
      "interventions": [
        {
          "name": "High-Dose Trivalent Inactivated Influenza Vaccine (HD-TIV)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Standard Dose Trivalent Inactivated Flu Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Vanderbilt-Ingram Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 44,
      "start_date": "2010-10",
      "completion_date": "2012-09",
      "has_results": true,
      "last_update_posted_date": "2013-03-08",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01215734"
    },
    {
      "nct_id": "NCT01991587",
      "title": "Safety, Tolerability and Immunogenicity of a Plant-made Seasonal Quadrivalent VLP Influenza Vaccine in Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Virus Diseases",
        "RNA Virus Infections",
        "Respiratory Tract Diseases",
        "Respiratory Tract Infections"
      ],
      "interventions": [
        {
          "name": "Low dose of quadrivalent VLP vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Medium dose of quadrivalent VLP vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "High dose of quadrivalent VLP vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Medicago",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 120,
      "start_date": "2013-10-08",
      "completion_date": "2014-06-30",
      "has_results": false,
      "last_update_posted_date": "2020-06-11",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01991587"
    },
    {
      "nct_id": "NCT01666782",
      "title": "Study Comparing High-Dose Flu Vaccine to Standard Vaccine in Cancer Patients Less Than 65 Receiving Chemotherapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cancer",
        "Influenza Viral Infections"
      ],
      "interventions": [
        {
          "name": "Standard Trivalent Influenza Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "High-Dose Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Saad Jamshed MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 105,
      "start_date": "2012-08",
      "completion_date": "2015-12",
      "has_results": true,
      "last_update_posted_date": "2016-06-24",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 2,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01666782"
    },
    {
      "nct_id": "NCT01946438",
      "title": "Study of Fluzone® Quadrivalent, Fluzone® Intradermal, and Fluzone® High-Dose Influenza Virus Vaccines in Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Fluzone® Quadrivalent, Influenza Virus Vaccine (2013-2014 formulation),",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluzone® Intradermal, Influenza Virus Vaccine (2013-2014 formulation),",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluzone® High-Dose, Influenza Virus Vaccine (2013-2014 formulation)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 208,
      "start_date": "2013-09",
      "completion_date": "2014-07",
      "has_results": true,
      "last_update_posted_date": "2014-09-25",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 4,
      "location_summary": "Santa Rosa, California • Council Bluffs, Iowa • Metairie, Louisiana + 1 more",
      "locations": [
        {
          "city": "Santa Rosa",
          "state": "California"
        },
        {
          "city": "Council Bluffs",
          "state": "Iowa"
        },
        {
          "city": "Metairie",
          "state": "Louisiana"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01946438"
    },
    {
      "nct_id": "NCT01262846",
      "title": "Improving Immunogenicity of Influenza Vaccine in HIV Infected Individuals",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "HIV Infection"
      ],
      "interventions": [
        {
          "name": "Fluzone®",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 195,
      "start_date": "2010-11",
      "completion_date": "2011-04",
      "has_results": true,
      "last_update_posted_date": "2017-04-13",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01262846"
    },
    {
      "nct_id": "NCT02908269",
      "title": "Safety and Immunogenicity of Fluzone® Quadrivalent and Fluzone® High-Dose, Influenza Vaccines, 2016-2017 Formulations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Fluzone Quadrivalent vaccine, 2016-2017 formulation, No Preservative",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluzone High-Dose, vaccine, 2016-2017 formulation",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "3 Years and older"
      },
      "enrollment_count": 180,
      "start_date": "2016-09-15",
      "completion_date": "2016-12-09",
      "has_results": true,
      "last_update_posted_date": "2022-03-29",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 2,
      "location_summary": "Bardstown, Kentucky • Metairie, Louisiana",
      "locations": [
        {
          "city": "Bardstown",
          "state": "Kentucky"
        },
        {
          "city": "Metairie",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02908269"
    },
    {
      "nct_id": "NCT02860039",
      "title": "High Dose Flu Vaccine in Treating Children Who Have Undergone Donor Stem Cell Transplant",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hematopoietic Cell Transplantation Recipient",
        "Malignant Neoplasm",
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Trivalent Influenza Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quadrivalent Influenza Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Vanderbilt-Ingram Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "3 Years to 17 Years"
      },
      "enrollment_count": 170,
      "start_date": "2016-09",
      "completion_date": "2024-09",
      "has_results": true,
      "last_update_posted_date": "2024-10-22",
      "last_synced_at": "2026-11-15T18:46:24.095Z",
      "location_count": 9,
      "location_summary": "San Francisco, California • Kansas City, Missouri • Cincinnati, Ohio + 6 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02860039"
    }
  ]
}