{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Influenza+Virus+Vaccine",
    "query": {
      "condition": "Influenza Virus Vaccine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 1101,
    "total_pages": 111,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Influenza+Virus+Vaccine&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T17:37:47.716Z",
  "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": "NCT04613206",
      "title": "High vs. Standard Dose Influenza Vaccine in Adult SOT Recipients",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Immunization; Infection",
        "Transplantation Infection",
        "Influenza",
        "Solid Organ Transplant"
      ],
      "interventions": [
        {
          "name": "High Dose Quadrivalent Inactivated Influenza Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Standard Dose Quadrivalent Inactivated Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 396,
      "start_date": "2021-01-11",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-21",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04613206"
    },
    {
      "nct_id": "NCT00377585",
      "title": "Demonstrate the Superiority of the Immune Response of Adjuvanted Influenza Vaccine Induced in an Adult Population",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Fluarix",
          "type": "BIOLOGICAL"
        },
        {
          "name": "adjuvanted influenza vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3350,
      "start_date": "2006-09-22",
      "completion_date": "2007-01-30",
      "has_results": false,
      "last_update_posted_date": "2017-04-24",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 10,
      "location_summary": "Clearwater, Florida • Coral Gables, Florida • Milford, Massachusetts + 7 more",
      "locations": [
        {
          "city": "Clearwater",
          "state": "Florida"
        },
        {
          "city": "Coral Gables",
          "state": "Florida"
        },
        {
          "city": "Milford",
          "state": "Massachusetts"
        },
        {
          "city": "Chaska",
          "state": "Minnesota"
        },
        {
          "city": "Somers Point",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00377585"
    },
    {
      "nct_id": "NCT01472536",
      "title": "A Study of Exclusion Criteria in a University Population",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Sequestration",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1400,
      "start_date": "2011-11",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2016-01-26",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01472536"
    },
    {
      "nct_id": "NCT05787444",
      "title": "Clinical Validation of the LumiraDx SARS-CoV-2 & Flu A/B Combo Test",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "SARS-CoV-2",
        "Influenza A",
        "Influenza B",
        "Asymptomatic COVID-19"
      ],
      "interventions": [
        {
          "name": "LumiraDx SARS-CoV-2 & Flu A/B",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "LumiraDx UK Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": 1081,
      "start_date": "2023-05-04",
      "completion_date": "2024-04-02",
      "has_results": false,
      "last_update_posted_date": "2026-06-11",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 1,
      "location_summary": "Cullman, Alabama",
      "locations": [
        {
          "city": "Cullman",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05787444"
    },
    {
      "nct_id": "NCT00617110",
      "title": "Effects of Diesel Exhaust Followed by Administration of Nasal Spray Flu Vaccine on Individuals With & Without Allergies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "live attenuated influenza virus (LAIV) with clean air",
          "type": "OTHER"
        },
        {
          "name": "LAIV and diesel exhaust particles",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 54,
      "start_date": "2008-01",
      "completion_date": "2014-04",
      "has_results": false,
      "last_update_posted_date": "2015-06-03",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00617110"
    },
    {
      "nct_id": "NCT00170443",
      "title": "Trivalent rHA Dose Escalation Study in Elderly Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "rHAO Trivalent 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": "65 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "65 Years to 80 Years"
      },
      "enrollment_count": 399,
      "start_date": null,
      "completion_date": "2004-06",
      "has_results": false,
      "last_update_posted_date": "2011-08-12",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 3,
      "location_summary": "Rochester, New York • Cincinnati, Ohio • Houston, Texas",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00170443"
    },
    {
      "nct_id": "NCT02214225",
      "title": "A Study to Evaluate the Immunogenicity and Safety of bioCSL Quadrivalent Influenza Vaccine (QIV) in Adults Aged 18 Years and Above.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "Quadrivalent Influenza Vaccine (QIV)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trivalent Influenza Vaccine (TIV-1)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Trivalent Influenza Vaccine (TIV-2)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Seqirus",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3484,
      "start_date": "2014-08",
      "completion_date": "2015-04",
      "has_results": true,
      "last_update_posted_date": "2017-03-13",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 33,
      "location_summary": "Huntsville, Alabama • Los Angeles, California • San Diego, California + 29 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Milford",
          "state": "Connecticut"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02214225"
    },
    {
      "nct_id": "NCT05052697",
      "title": "A Study to Evaluate the Safety, Tolerability, and Immunogenicity of a Modified RNA Vaccine Against Influenza",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "mIRV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "bIRV AB",
          "type": "BIOLOGICAL"
        },
        {
          "name": "qIRV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "QIV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "bIRV AA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "bIRV BB",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 1158,
      "start_date": "2021-09-13",
      "completion_date": "2023-01-27",
      "has_results": true,
      "last_update_posted_date": "2024-03-12",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 100,
      "location_summary": "Athens, Alabama • Phoenix, Arizona • Tucson, Arizona + 58 more",
      "locations": [
        {
          "city": "Athens",
          "state": "Alabama"
        },
        {
          "city": "Athens",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05052697"
    },
    {
      "nct_id": "NCT06753474",
      "title": "A/Texas Flu Challenge",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Influenza Virus influenza A H3N2 strain",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 50,
      "start_date": "2025-02-04",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-03-03",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06753474"
    },
    {
      "nct_id": "NCT01302418",
      "title": "Collection and Testing of Respiratory Samples",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "QIAGEN ResPlex II Advanced Panel",
        "Influenza A",
        "Respiratory Syncytial Virus Infections",
        "Infection Due to Human Parainfluenza Virus 1",
        "Parainfluenza Type 2",
        "Parainfluenza Type 3",
        "Parainfluenza Type 4",
        "Human Metapneumovirus A/B",
        "Rhinovirus",
        "Coxsackie Virus/Echovirus",
        "Adenovirus Types B/C/E",
        "Coronavirus Subtypes 229E",
        "Coronavirus Subtype NL63",
        "Coronavirus Subtype OC43",
        "Coronavirus Subtype HKU1",
        "Human Bocavirus",
        "Artus Influenza A/B RT-PCR Test",
        "Influenza B"
      ],
      "interventions": [
        {
          "name": "artus Influenza A/B RT-PCR Test",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "QIAGEN Gaithersburg, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 272,
      "start_date": "2011-02",
      "completion_date": "2011-11",
      "has_results": true,
      "last_update_posted_date": "2017-05-10",
      "last_synced_at": "2026-09-25T17:37:47.716Z",
      "location_count": 5,
      "location_summary": "Tuscon, Arizona • Albany, New York • Chapel Hill, North Carolina + 1 more",
      "locations": [
        {
          "city": "Tuscon",
          "state": "Arizona"
        },
        {
          "city": "Albany",
          "state": "New York"
        },
        {
          "city": "Albany",
          "state": "New York"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01302418"
    }
  ]
}