{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Fluzone+HD",
    "query": {
      "intervention": "Fluzone HD"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 211,
    "total_pages": 22,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Fluzone+HD&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T16:23:49.169Z",
  "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": "NCT00170547",
      "title": "Comparison of Delivery Routes of Flu Vaccine in Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Trivalent inactivated influenza vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 1597,
      "start_date": "2005-09",
      "completion_date": "2006-02",
      "has_results": false,
      "last_update_posted_date": "2014-12-05",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 10,
      "location_summary": "Stanford, California • Torrance, California • Iowa City, Iowa + 7 more",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00170547"
    },
    {
      "nct_id": "NCT03698279",
      "title": "Safety and Immunogenicity of Different Dosages of High-Dose Quadrivalent Influenza Vaccine in Children 6 Months to 17 Years of Age",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "High-Dose Quadrivalent Influenza Vaccine (QIV-HD) 30 μg (split-virion, inactivated)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "High-Dose Quadrivalent Influenza Vaccine (QIV-HD) 45 μg, (split-virion, inactivated)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "High-Dose Quadrivalent Influenza Vaccine (QIV-HD) 60 µg (split-virion, inactivated)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluarix Quadrivalent Influenza vaccine (Unadjuvanted QIV-SD) (Inactivated)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "FLUAD Pediatric (adjuvanted TIV) (Surface Antigen, Inactivated)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Months to 17 Years"
      },
      "enrollment_count": 665,
      "start_date": "2018-10-09",
      "completion_date": "2019-10-16",
      "has_results": true,
      "last_update_posted_date": "2022-04-04",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 13,
      "location_summary": "San Diego, California • Miami, Florida • Atlanta, Georgia + 8 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "El Dorado",
          "state": "Kansas"
        },
        {
          "city": "Newton",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03698279"
    },
    {
      "nct_id": "NCT01333462",
      "title": "Safety and Immunogenicity Study of Inactivated Nasal Influenza Vaccine NB-1008",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Adult Volunteers"
      ],
      "interventions": [
        {
          "name": "NB-1008",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "NanoBio Corporation",
      "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": 199,
      "start_date": "2009-03",
      "completion_date": "2010-09",
      "has_results": false,
      "last_update_posted_date": "2011-04-12",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 1,
      "location_summary": "Lenexa, Kansas",
      "locations": [
        {
          "city": "Lenexa",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01333462"
    },
    {
      "nct_id": "NCT00138281",
      "title": "Influenza Immunity Against Pandemic Respiratory Virus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "FluMist",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluzone",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 60,
      "start_date": null,
      "completion_date": "2006-01",
      "has_results": false,
      "last_update_posted_date": "2010-08-27",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00138281"
    },
    {
      "nct_id": "NCT00258830",
      "title": "Safety and Immunogenicity of the 2005-2006 Fluzone® Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Fluzone®: Influenza Virus Vaccine",
          "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": 120,
      "start_date": "2005-09",
      "completion_date": "2007-03",
      "has_results": true,
      "last_update_posted_date": "2016-04-14",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 1,
      "location_summary": "Norfolk, Virginia",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00258830"
    },
    {
      "nct_id": "NCT05091307",
      "title": "A Study of Ad26.COV2.S and Influenza Vaccines in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "COVID-19 Prevention"
      ],
      "interventions": [
        {
          "name": "Ad26.COV2.S",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Janssen Vaccines & Prevention B.V.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 861,
      "start_date": "2021-11-02",
      "completion_date": "2022-11-15",
      "has_results": true,
      "last_update_posted_date": "2025-05-25",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 17,
      "location_summary": "Tempe, Arizona • San Diego, California • Coral Gables, Florida + 12 more",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Coral Gables",
          "state": "Florida"
        },
        {
          "city": "Fort Myers",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05091307"
    },
    {
      "nct_id": "NCT00388583",
      "title": "Study of Inactivated, Split-Virion Influenza Vaccine Compared With Standard Fluzone Vaccine in Elderly Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Orthomyxoviridae Infection",
        "Influenza",
        "Myxovirus Infection"
      ],
      "interventions": [
        {
          "name": "Split, Inactivated, Trivalent Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 817,
      "start_date": "2006-09",
      "completion_date": "2008-09",
      "has_results": true,
      "last_update_posted_date": "2012-04-18",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 17,
      "location_summary": "Alabaster, Alabama • Tucson, Arizona • Fountain Valley, California + 14 more",
      "locations": [
        {
          "city": "Alabaster",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Pinellas Park",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00388583"
    },
    {
      "nct_id": "NCT00623181",
      "title": "Study to Determine a Preference for Fluzone Vaccine Given Intradermally (ID) and Intramuscularly (IM) in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Fluzone: Influenza virus vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "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": 110,
      "start_date": "2008-01",
      "completion_date": "2008-06",
      "has_results": true,
      "last_update_posted_date": "2016-04-14",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 2,
      "location_summary": "Grove City, Pennsylvania • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Grove City",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00623181"
    },
    {
      "nct_id": "NCT01941758",
      "title": "High-Dose Trivalent Influenza Vaccine in Inducing Immune Response Patients With Central Nervous System Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Central Nervous System Neoplasm"
      ],
      "interventions": [
        {
          "name": "trivalent influenza vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 28,
      "start_date": "2013-11",
      "completion_date": "2014-11",
      "has_results": false,
      "last_update_posted_date": "2018-07-05",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01941758"
    },
    {
      "nct_id": "NCT03312699",
      "title": "Effects of Aging on Primary and Secondary Vaccine Responses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza",
        "Hepatitis A",
        "Typhoid",
        "Healthy Adults"
      ],
      "interventions": [
        {
          "name": "Fluzone® quadrivalent",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluzone High Dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluad",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Vaqta",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Typhim Vi",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Vivotif",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 54,
      "start_date": "2017-09-19",
      "completion_date": "2023-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-12-16",
      "last_synced_at": "2026-09-06T16:23:49.169Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03312699"
    }
  ]
}