{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Standard+Dose+Inactivated+Influenza+Vaccine+%28SD-IIV%29",
    "query": {
      "intervention": "Standard Dose Inactivated Influenza Vaccine (SD-IIV)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-04T21:35:15.505Z",
  "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": "NCT06641180",
      "title": "Study to Evaluate Immunogenicity and Safety of a High-Dose Influenza Vaccine in Adults 50 Through 64 Years of Age",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "High-Dose trivalent influenza vaccine (Split virion, Inactivated)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Standard-dose trivalent influenza vaccine (Split virion, Inactivated)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "50 Years to 64 Years"
      },
      "enrollment_count": 1180,
      "start_date": "2024-11-04",
      "completion_date": "2025-06-24",
      "has_results": false,
      "last_update_posted_date": "2025-12-03",
      "last_synced_at": "2026-10-04T21:35:15.505Z",
      "location_count": 20,
      "location_summary": "Los Alamitos, California • Fort Myers, Florida • Hollywood, Florida + 16 more",
      "locations": [
        {
          "city": "Los Alamitos",
          "state": "California"
        },
        {
          "city": "Fort Myers",
          "state": "Florida"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Columbus",
          "state": "Georgia"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06641180"
    },
    {
      "nct_id": "NCT02500680",
      "title": "The Safety, Tolerance, and Immunogenicity of MAS-1-Adjuvanted Seasonal Inactivated Influenza Vaccine (MER4101)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "MER4101",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Inactivated Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Nova Immunotherapeutics Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 102,
      "start_date": "2015-07",
      "completion_date": "2020-12",
      "has_results": false,
      "last_update_posted_date": "2019-09-06",
      "last_synced_at": "2026-10-04T21:35:15.505Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02500680"
    },
    {
      "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": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-10-02",
      "last_synced_at": "2026-10-04T21:35:15.505Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04613206"
    },
    {
      "nct_id": "NCT05514002",
      "title": "Recombinant Influenza Vaccine Versus Standard Egg-Based Inactivated Influenza Vaccine in Adults 18-64 Years",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "Fluzone Quadrivalent",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Flublok Quadrivalent",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Centers for Disease Control and Prevention",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 3988,
      "start_date": "2022-09-13",
      "completion_date": "2023-12-31",
      "has_results": true,
      "last_update_posted_date": "2026-07-30",
      "last_synced_at": "2026-10-04T21:35:15.505Z",
      "location_count": 4,
      "location_summary": "Tucson, Arizona • Tallahassee, Florida • Houston, Texas + 1 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Tallahassee",
          "state": "Florida"
        },
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05514002"
    },
    {
      "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": "2026-10-04T21:35:15.505Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07192458"
    },
    {
      "nct_id": "NCT03694392",
      "title": "Flublok v. Standard Dose Vaccine Effectiveness Among Kaiser Permanente Northern California Adults 18-64 Years",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Influenza",
        "Pneumonia",
        "Lower Respiratory Tract Infection",
        "Acute Myocardial Infarction",
        "Congestive Heart Failure",
        "Stroke"
      ],
      "interventions": [
        {
          "name": "Flublok Quadrivalent",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Standard Dose Inactivated Influenza Vaccine (SD-IIV)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Kaiser Permanente",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 2776278,
      "start_date": "2018-09-16",
      "completion_date": "2022-12-31",
      "has_results": true,
      "last_update_posted_date": "2025-04-08",
      "last_synced_at": "2026-10-04T21:35:15.505Z",
      "location_count": 1,
      "location_summary": "Oakland, California",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03694392"
    }
  ]
}