{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Influenza+vaccine&page=31",
    "query": {
      "intervention": "Influenza vaccine",
      "page": 31
    },
    "page_size": 10
  },
  "pagination": {
    "page": 31,
    "page_size": 10,
    "total_count": 1158,
    "total_pages": 116,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Influenza+vaccine&page=32&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Influenza+vaccine&page=30&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-16T04:58:01.645Z",
  "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": "NCT00455169",
      "title": "Influenza Vaccine in Premature Infants",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Influenza",
        "Infant, Premature"
      ],
      "interventions": [
        {
          "name": "Trivalent Inactivated Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "17 Months",
        "sex": "ALL",
        "summary": "6 Months to 17 Months"
      },
      "enrollment_count": 66,
      "start_date": "2007-10",
      "completion_date": "2008-05",
      "has_results": false,
      "last_update_posted_date": "2015-09-17",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 5,
      "location_summary": "Miami, Florida • Buffalo, New York • Rochester, New York + 2 more",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Buffalo",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00455169"
    },
    {
      "nct_id": "NCT04533061",
      "title": "Influenza Vaccine in Lung Transplant Patients - T Cells",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Influenza vaccine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2004-12",
      "completion_date": "2009-07",
      "has_results": false,
      "last_update_posted_date": "2020-10-23",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04533061"
    },
    {
      "nct_id": "NCT06062056",
      "title": "Motivational Interviewing for Vaccine Uptake in Latinx Adults",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccine Hesitancy"
      ],
      "interventions": [
        {
          "name": "EHR alert",
          "type": "OTHER"
        },
        {
          "name": "Motivational Interviewing",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Warm hand off to nurse",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "Boston College",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3698,
      "start_date": "2023-10-02",
      "completion_date": "2025-04-30",
      "has_results": false,
      "last_update_posted_date": "2025-09-15",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06062056"
    },
    {
      "nct_id": "NCT00630331",
      "title": "Efficacy Study of Two Influenza Vaccines and Placebo in Healthy Adult Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Cell culture-derived influenza vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Egg-derived influenza virus vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novartis Vaccines",
      "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": 11404,
      "start_date": "2007-10",
      "completion_date": "2008-07",
      "has_results": true,
      "last_update_posted_date": "2024-05-24",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 17,
      "location_summary": "Denver, Colorado • Pembroke Pines, Florida • South Miami, Florida + 13 more",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Pembroke Pines",
          "state": "Florida"
        },
        {
          "city": "South Miami",
          "state": "Florida"
        },
        {
          "city": "Lenexa",
          "state": "Kansas"
        },
        {
          "city": "Bardstown",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00630331"
    },
    {
      "nct_id": "NCT02213354",
      "title": "H7N9 Mix and Match With MF59 in Healthy Elderly Persons",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Avian Influenza"
      ],
      "interventions": [
        {
          "name": "MF59",
          "type": "DRUG"
        },
        {
          "name": "Influenza Virus Vaccine, Monovalent A/H7N9 A/Shanghai/2/2013",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "65 Years to 99 Years"
      },
      "enrollment_count": 479,
      "start_date": "2014-10",
      "completion_date": "2016-07",
      "has_results": false,
      "last_update_posted_date": "2017-07-06",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 10,
      "location_summary": "Decatur, Georgia • Iowa City, Iowa • Baltimore, Maryland + 7 more",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02213354"
    },
    {
      "nct_id": "NCT02831751",
      "title": "Immunogenicity, Safety, and Tolerability of a Plant-Derived Quadrivalent VLP Influenza Vaccine in Elderly Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Virus Diseases",
        "RNA Virus Infections",
        "Respiratory Tract Diseases",
        "Respiratory Tract Infections"
      ],
      "interventions": [
        {
          "name": "30 µg/strain of Quadrivalent VLP Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "60 µg/strain of Quadrivalent VLP Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "FluLaval® Tetra (15 µg/strain)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluzone® High-Dose (60 µg/strain)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Medicago",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 1001,
      "start_date": "2016-04",
      "completion_date": "2017-01",
      "has_results": false,
      "last_update_posted_date": "2019-10-25",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 6,
      "location_summary": "Redding, California • Hollywood, Florida • South Miami, Florida + 3 more",
      "locations": [
        {
          "city": "Redding",
          "state": "California"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "South Miami",
          "state": "Florida"
        },
        {
          "city": "Savannah",
          "state": "Georgia"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02831751"
    },
    {
      "nct_id": "NCT03287830",
      "title": "Flu2Text: Text Message Reminders for 2nd Dose of Influenza Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza",
        "Vaccination"
      ],
      "interventions": [
        {
          "name": "Text message influenza vaccine reminders",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "8 Years",
        "sex": "ALL",
        "summary": "6 Months to 8 Years"
      },
      "enrollment_count": 2105,
      "start_date": "2017-10-06",
      "completion_date": "2019-04-30",
      "has_results": true,
      "last_update_posted_date": "2023-09-15",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 3,
      "location_summary": "Itasca, Illinois • New York, New York • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Itasca",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03287830"
    },
    {
      "nct_id": "NCT03673345",
      "title": "Development of Childhood Anti-Influenza Immunity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza",
        "Influenza Immunisation"
      ],
      "interventions": [
        {
          "name": "Influenza Virus Quadrivalent Inactivated Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Months",
        "maximum_age": "15 Years",
        "sex": "ALL",
        "summary": "3 Months to 15 Years"
      },
      "enrollment_count": 125,
      "start_date": "2018-09-25",
      "completion_date": "2020-12-22",
      "has_results": true,
      "last_update_posted_date": "2022-03-18",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03673345"
    },
    {
      "nct_id": "NCT01258530",
      "title": "A Study to Evaluate the Bioequivalence of Over-encapsulated Oseltamivir Capsules to Marketed Oseltamivir Capsules in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "over-encapsulated oseltamivir",
          "type": "DRUG"
        },
        {
          "name": "oseltamivir",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 28,
      "start_date": "2010-12-20",
      "completion_date": "2011-02-03",
      "has_results": false,
      "last_update_posted_date": "2017-06-07",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01258530"
    },
    {
      "nct_id": "NCT00133536",
      "title": "A/H5N1 Vaccine in Healthy Children Aged 2-9 Years",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Influenza A/H5N1 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "9 Years",
        "sex": "ALL",
        "summary": "2 Years to 9 Years"
      },
      "enrollment_count": 157,
      "start_date": "2006-01",
      "completion_date": "2007-04",
      "has_results": false,
      "last_update_posted_date": "2010-08-27",
      "last_synced_at": "2026-10-16T04:58:01.645Z",
      "location_count": 4,
      "location_summary": "Torrance, California • Baltimore, Maryland • St Louis, Missouri + 1 more",
      "locations": [
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00133536"
    }
  ]
}