{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Influenza+virus+vaccine",
    "query": {
      "intervention": "Influenza virus vaccine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 1121,
    "total_pages": 113,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Influenza+virus+vaccine&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T06:24:54.116Z",
  "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": "NCT04610047",
      "title": "Efficacy and Safety of Norketotifen in Uncomplicated Influenza-like Illness",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza",
        "Influenza -Like Illness"
      ],
      "interventions": [
        {
          "name": "Norketotifen",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emergo Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 315,
      "start_date": "2020-12-14",
      "completion_date": "2022-02-09",
      "has_results": false,
      "last_update_posted_date": "2023-01-30",
      "last_synced_at": "2026-09-29T06:24:54.116Z",
      "location_count": 20,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • DeBary, Florida + 15 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "DeBary",
          "state": "Florida"
        },
        {
          "city": "Kissimmee",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04610047"
    },
    {
      "nct_id": "NCT04245800",
      "title": "Home Testing of Respiratory Illness",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Influenza -Like Illness",
        "Influenza A",
        "Influenza Type B",
        "Respiratory Viral Infection",
        "Respiratory Tract Infections"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Evidation Health",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5233,
      "start_date": "2019-12-13",
      "completion_date": "2020-07-06",
      "has_results": false,
      "last_update_posted_date": "2020-07-22",
      "last_synced_at": "2026-09-29T06:24:54.116Z",
      "location_count": 1,
      "location_summary": "San Mateo, California",
      "locations": [
        {
          "city": "San Mateo",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04245800"
    },
    {
      "nct_id": "NCT01691326",
      "title": "Safety and Immunogenicity Among Healthy Children Receiving Fluzone® Influenza Virus Vaccine (2012-2013 Formulation)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Fluzone®: Influenza Virus Vaccine, No Preservative: Pediatric Dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluzone®; Influenza Virus Vaccine, No Preservative",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "8 Years",
        "sex": "ALL",
        "summary": "6 Months to 8 Years"
      },
      "enrollment_count": 60,
      "start_date": "2012-09",
      "completion_date": "2013-02",
      "has_results": true,
      "last_update_posted_date": "2014-04-16",
      "last_synced_at": "2026-09-29T06:24:54.116Z",
      "location_count": 2,
      "location_summary": "Bardstown, Kentucky • Salt Lake City, Utah",
      "locations": [
        {
          "city": "Bardstown",
          "state": "Kentucky"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01691326"
    },
    {
      "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": "2026-09-29T06:24:54.116Z",
      "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": "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": "2026-09-29T06:24:54.116Z",
      "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": "NCT05513053",
      "title": "Study With Quadrivalent Recombinant Influenza Vaccine (RIV4) in Participants 9 Through 49 Years of Age.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Influenza Immunization"
      ],
      "interventions": [
        {
          "name": "Quadrivalent Recombinant influenza vaccine (RIV4) season/2022-2023/NH",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "9 Years to 49 Years"
      },
      "enrollment_count": 1308,
      "start_date": "2022-10-27",
      "completion_date": "2023-10-27",
      "has_results": true,
      "last_update_posted_date": "2025-09-09",
      "last_synced_at": "2026-09-29T06:24:54.116Z",
      "location_count": 21,
      "location_summary": "Birmingham, Alabama • Jonesboro, Arkansas • San Diego, California + 16 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Sioux City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05513053"
    },
    {
      "nct_id": "NCT01995695",
      "title": "Safety and Immunogenicity of a Live Attenuated H7N9 Influenza Virus Vaccine in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza A Virus, H7N9 Subtype"
      ],
      "interventions": [
        {
          "name": "Live attenuated H7N9 A/Anhui/13 ca influenza virus vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Inactivated subvirion H7N9 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": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 48,
      "start_date": "2013-10",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2016-07-27",
      "last_synced_at": "2026-09-29T06:24:54.116Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01995695"
    },
    {
      "nct_id": "NCT00170495",
      "title": "Acute Viral Respiratory Infections in Elderly",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Respiratory Infections, Acute"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 3000,
      "start_date": "2004-09",
      "completion_date": "2006-07",
      "has_results": false,
      "last_update_posted_date": "2010-08-27",
      "last_synced_at": "2026-09-29T06:24:54.116Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00170495"
    },
    {
      "nct_id": "NCT00311701",
      "title": "Chart Review of Antivirals for Influenza in Infants",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Influenza"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "11 Months",
        "sex": "ALL",
        "summary": "Up to 11 Months"
      },
      "enrollment_count": 200,
      "start_date": "2005-11",
      "completion_date": "2006-12",
      "has_results": false,
      "last_update_posted_date": "2011-05-13",
      "last_synced_at": "2026-09-29T06:24:54.116Z",
      "location_count": 15,
      "location_summary": "Birmingham, Alabama • Pulaski, Arkansas • Orange, California + 12 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Pulaski",
          "state": "Arkansas"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00311701"
    },
    {
      "nct_id": "NCT01086566",
      "title": "Cellular and Humoral Immune Response to Primary and Secondary Immunization With Subvirion H5N1 Vaccines",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Influenza Virus Vaccine, Monovalent A/H5N1 A/Indonesia/05/2005",
          "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": 95,
      "start_date": "2010-10",
      "completion_date": "2012-02",
      "has_results": false,
      "last_update_posted_date": "2016-01-01",
      "last_synced_at": "2026-09-29T06:24:54.116Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01086566"
    }
  ]
}