{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=influenza+virus+vaccination&page=4",
    "query": {
      "intervention": "influenza virus vaccination",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 93,
    "total_pages": 10,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=influenza+virus+vaccination&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=influenza+virus+vaccination&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-13T09:42:48.147Z",
  "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": "NCT05047770",
      "title": "A Study on the Immune Response and Safety of the Shingles Vaccine and the Influenza Vaccine When Either is Given to Healthy Adults at the Same Time or Following a COVID-19 Booster Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Herpes Zoster"
      ],
      "interventions": [
        {
          "name": "HZ/su",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Flu D-QIV",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "COMBINATION_PRODUCT"
      ],
      "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": 2013,
      "start_date": "2021-10-07",
      "completion_date": "2022-08-31",
      "has_results": true,
      "last_update_posted_date": "2023-11-13",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 46,
      "location_summary": "Tempe, Arizona • Oxnard, California • San Diego, California + 40 more",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Oxnard",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Atlantis",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05047770"
    },
    {
      "nct_id": "NCT07192458",
      "title": "High vs. Standard Dose Influenza Vaccines in Lung Transplant (Repeater)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Immunization; Infection|Transplantation Infection|Influenza",
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Fluzone High Dose Inactivated Influenza Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluzone Standard Dose 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": 60,
      "start_date": "2025-09-17",
      "completion_date": "2029-12",
      "has_results": false,
      "last_update_posted_date": "2025-10-07",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07192458"
    },
    {
      "nct_id": "NCT00719043",
      "title": "Immunogenicity & Safety of GSK's Avian Flu Vaccine 1557484A Given to Adults Aged ≥18 Years",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "A/turkey H5N1 vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Influenza A (H5N1) Virus Monovalent Vaccine, Adjuvanted (A/Indonesia)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "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": 841,
      "start_date": "2008-07-11",
      "completion_date": "2011-02-18",
      "has_results": true,
      "last_update_posted_date": "2018-07-09",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 10,
      "location_summary": "Denver, Colorado • Chicago, Illinois • Metairie, Louisiana + 7 more",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Metairie",
          "state": "Louisiana"
        },
        {
          "city": "Milford",
          "state": "Massachusetts"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00719043"
    },
    {
      "nct_id": "NCT02559505",
      "title": "Influenza Immunity in Children",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Seasonal IIV 0.25 mL dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Natural influenza infection",
          "type": "OTHER"
        },
        {
          "name": "Seasonal IIV 0.5 mL dose",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Months",
        "maximum_age": "8 Years",
        "sex": "ALL",
        "summary": "3 Months to 8 Years"
      },
      "enrollment_count": 134,
      "start_date": "2015-10",
      "completion_date": "2020-07-03",
      "has_results": true,
      "last_update_posted_date": "2021-09-02",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02559505"
    },
    {
      "nct_id": "NCT00380237",
      "title": "Safety of and Immune Response to a Bird Flu Virus Vaccine (H9N2) in Healthy Adults (Study B)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza",
        "Virus Diseases"
      ],
      "interventions": [
        {
          "name": "H9N2 (6-2) AA ca Reassortant (A/Chicken/Hong Kong/G9/97 x A/Ann Arbor/6/60 ca)",
          "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": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2006-10",
      "completion_date": "2007-01",
      "has_results": false,
      "last_update_posted_date": "2008-01-21",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00380237"
    },
    {
      "nct_id": "NCT05947071",
      "title": "High vs.Standard Dose Influenza Vaccine in Pediatric Solid Organ Transplant (SOT) Recipients",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Immunization; Infection",
        "Transplantation Infection",
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Standard Dose Quadrivalent Inactivated Influenza Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "High Dose Quadrivalent Inactivated Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "3 Years to 17 Years"
      },
      "enrollment_count": 312,
      "start_date": "2024-09-26",
      "completion_date": "2027-09-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-24",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 10,
      "location_summary": "Stanford, California • Atlanta, Georgia • Chicago, Illinois + 7 more",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05947071"
    },
    {
      "nct_id": "NCT02876159",
      "title": "The Immunologic Basis for an Attenuated Immune Response to the Influenza Vaccine After Repeated Annual Vaccination",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "2016-2017 Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "20 Years to 30 Years"
      },
      "enrollment_count": 20,
      "start_date": "2016-07",
      "completion_date": "2016-12-01",
      "has_results": true,
      "last_update_posted_date": "2018-12-12",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02876159"
    },
    {
      "nct_id": "NCT03453801",
      "title": "The Role of CD4+ Memory Phenotype, Memory, and Effector T Cells in Vaccination and Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza",
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Fluzone®",
          "type": "BIOLOGICAL"
        },
        {
          "name": "FluMist®",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "10 Years",
        "sex": "ALL",
        "summary": "6 Months to 10 Years"
      },
      "enrollment_count": 80,
      "start_date": "2014-09-30",
      "completion_date": "2019-01-14",
      "has_results": false,
      "last_update_posted_date": "2020-02-13",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03453801"
    },
    {
      "nct_id": "NCT03553940",
      "title": "H3N2 M2SR in Pediatric Population",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza",
        "Influenza Immunisation"
      ],
      "interventions": [
        {
          "name": "Influenza Virus Monovalent A/H3N2/Bris 10 M2SR Live Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Quadrivalent MDCK Inactivated Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "9 Years to 17 Years"
      },
      "enrollment_count": 43,
      "start_date": "2018-08-15",
      "completion_date": "2020-08-27",
      "has_results": true,
      "last_update_posted_date": "2021-10-21",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03553940"
    },
    {
      "nct_id": "NCT06024096",
      "title": "Systems Biological Assessment of Statin Effect on Vaccine Responses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Vaccine Response"
      ],
      "interventions": [
        {
          "name": "Atorvastatin",
          "type": "DRUG"
        },
        {
          "name": "Quadrivalent seasonal influenza vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 63,
      "start_date": "2023-09-20",
      "completion_date": "2024-12-16",
      "has_results": true,
      "last_update_posted_date": "2026-01-14",
      "last_synced_at": "2026-10-13T09:42:48.147Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06024096"
    }
  ]
}