{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Influenza+Vaccination&page=2",
    "query": {
      "intervention": "Influenza Vaccination",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Influenza+Vaccination&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-28T17:51:19.251Z",
  "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": "NCT00056758",
      "title": "HIV Vaccine Designed for HIV Infected Adults Taking Anti-HIV Drugs",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "Autologous Dendritic Cell HIV Vaccination",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2003-02",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2007-08-27",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00056758"
    },
    {
      "nct_id": "NCT01207232",
      "title": "The Effect of a Planning Prompt on Seasonal Influenza Vaccination Rates",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Seasonal Influenza"
      ],
      "interventions": [
        {
          "name": "Planning Prompt",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control Condition",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3272,
      "start_date": "2009-10",
      "completion_date": "2010-04",
      "has_results": false,
      "last_update_posted_date": "2010-09-22",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01207232"
    },
    {
      "nct_id": "NCT04499534",
      "title": "BRCA1/2 Flu Vaccine",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "BRCA1 Mutation",
        "BRCA2 Mutation"
      ],
      "interventions": [
        {
          "name": "Seasonal influenza vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "25 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2019-10-28",
      "completion_date": "2027-06",
      "has_results": false,
      "last_update_posted_date": "2026-07-08",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04499534"
    },
    {
      "nct_id": "NCT06437834",
      "title": "Increasing Men's Engagement in Preventive Healthcare Through an Enhanced Cocoon Vaccination Strategy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccines",
        "Preventive Medicine"
      ],
      "interventions": [
        {
          "name": "Information Sheet",
          "type": "OTHER"
        },
        {
          "name": "High-touch connect",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Case Western Reserve University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 176,
      "start_date": "2025-08-15",
      "completion_date": "2025-09-30",
      "has_results": true,
      "last_update_posted_date": "2026-06-05",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06437834"
    },
    {
      "nct_id": "NCT06646406",
      "title": "Evaluation of a Multilevel Intervention on Adult COVID-19 and Influenza Vaccination Rate",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COVID-19 Immunisation",
        "Influenza Vaccine"
      ],
      "interventions": [
        {
          "name": "Patient letter and clinician communication",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 114165,
      "start_date": "2024-10-21",
      "completion_date": "2025-04-30",
      "has_results": false,
      "last_update_posted_date": "2025-08-05",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 2,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06646406"
    },
    {
      "nct_id": "NCT02243774",
      "title": "Mail Outreach To Increase Vaccination Acceptance Through Engagement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza, Human",
        "Influenza",
        "Human Flu"
      ],
      "interventions": [
        {
          "name": "Core letter signed by Surgeon General",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Core letter signed by the Director of the National Vaccine Program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Core letter signed by Surgeon General + implementation prompt",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Core letter signed by SG + enhanced implementation prompt",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "66 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "66 Years and older"
      },
      "enrollment_count": 228000,
      "start_date": "2014-09",
      "completion_date": "2015-09",
      "has_results": false,
      "last_update_posted_date": "2017-07-12",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02243774"
    },
    {
      "nct_id": "NCT04590066",
      "title": "Testing Multiple Behavioral Science Strategies to Increase Flu-Shot Rates at a Large Retail Pharmacy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "Flu shot text messages",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 734383,
      "start_date": "2020-09-25",
      "completion_date": "2020-12-31",
      "has_results": false,
      "last_update_posted_date": "2021-02-01",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04590066"
    },
    {
      "nct_id": "NCT02898688",
      "title": "P3+ Intervention Phase",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccination"
      ],
      "interventions": [
        {
          "name": "Control Site",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Intervention Site",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Patient-level Control Group",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Patient-level Intervention Group",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 2200,
      "start_date": "2017-06-12",
      "completion_date": "2020-07-06",
      "has_results": false,
      "last_update_posted_date": "2020-08-05",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 23,
      "location_summary": "Aurora, Colorado • Boulder, Colorado • Denver, Colorado + 12 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Boulder",
          "state": "Colorado"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02898688"
    },
    {
      "nct_id": "NCT01146912",
      "title": "TextFluenza: Using Technology To Promote Flu Vaccination In Underserved Maternal And Child Populations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Text Message",
          "type": "OTHER"
        },
        {
          "name": "automated call",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "6 Months to 50 Years"
      },
      "enrollment_count": 30537,
      "start_date": "2010-06",
      "completion_date": "2012-04",
      "has_results": true,
      "last_update_posted_date": "2015-10-07",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01146912"
    },
    {
      "nct_id": "NCT03816878",
      "title": "Immunogenicity and Safety Study of Inactivated Subunit H5N1 Influenza Vaccine in Prior Recipients of Live Attenuated H2N2, H6N1 and H9N2 Influenza Vaccines and in H5N1 and Live Attenuated Vaccine Naïve Individuals",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "H5N1 pISV",
          "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": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 32,
      "start_date": "2019-01-08",
      "completion_date": "2020-03-17",
      "has_results": true,
      "last_update_posted_date": "2025-09-22",
      "last_synced_at": "2026-09-28T17:51:19.251Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03816878"
    }
  ]
}