{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=vaccinated",
    "query": {
      "intervention": "vaccinated"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 266,
    "total_pages": 27,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=vaccinated&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-09T08:46:48.138Z",
  "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": "NCT04951310",
      "title": "COVID-19 Vaccinations With a Sweepstakes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Philly Vax Sweepstakes",
          "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": 3827656,
      "start_date": "2021-06-07",
      "completion_date": "2021-08-14",
      "has_results": true,
      "last_update_posted_date": "2025-02-03",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04951310"
    },
    {
      "nct_id": "NCT06369272",
      "title": "Study to Assess Maternal and Infant Outcomes Following Exposure to SPIKEVAX During Pregnancy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Maternal Outcomes",
        "Infant Outcomes",
        "Pregnancy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "49 Years",
        "sex": "FEMALE",
        "summary": "13 Years to 49 Years · Female only"
      },
      "enrollment_count": 1192,
      "start_date": "2023-03-01",
      "completion_date": "2023-10-20",
      "has_results": false,
      "last_update_posted_date": "2024-04-16",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 1,
      "location_summary": "Newton, Massachusetts",
      "locations": [
        {
          "city": "Newton",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06369272"
    },
    {
      "nct_id": "NCT03604393",
      "title": "Increasing HPV Immunization Rates: The Rural Adolescent Vaccine Enterprise",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Human Papilloma Virus"
      ],
      "interventions": [
        {
          "name": "Practice facilitation",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 22000,
      "start_date": "2019-06-01",
      "completion_date": "2023-06",
      "has_results": false,
      "last_update_posted_date": "2022-03-31",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03604393"
    },
    {
      "nct_id": "NCT01159561",
      "title": "Western Equine Encephalitis Vaccine, Inactivated",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Virus"
      ],
      "interventions": [
        {
          "name": "Western Equine Encephalitis Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "U.S. Army Medical Research and Development Command",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 20,
      "start_date": "2010-02",
      "completion_date": "2012-03",
      "has_results": false,
      "last_update_posted_date": "2019-04-29",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 1,
      "location_summary": "Fort Deterick, Maryland",
      "locations": [
        {
          "city": "Fort Deterick",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01159561"
    },
    {
      "nct_id": "NCT04142983",
      "title": "Tdap Vaccine Safety for Plasma Donors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Tetanus"
      ],
      "interventions": [
        {
          "name": "Adacel",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GCAM Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "63 Years",
        "sex": "ALL",
        "summary": "18 Years to 63 Years"
      },
      "enrollment_count": 110,
      "start_date": "2020-02-03",
      "completion_date": "2021-11-16",
      "has_results": true,
      "last_update_posted_date": "2022-12-06",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 2,
      "location_summary": "Eagle Pass, Texas • Laredo, Texas",
      "locations": [
        {
          "city": "Eagle Pass",
          "state": "Texas"
        },
        {
          "city": "Laredo",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04142983"
    },
    {
      "nct_id": "NCT05876377",
      "title": "Use and Effectiveness of COVID-19 Vaccines Using State Vaccine Registries and Insurance Claims Data",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "SARS-CoV-2",
        "COVID-19",
        "Post-Acute COVID-19 Syndrome"
      ],
      "interventions": [
        {
          "name": "Pfizer-BioNTech COVID-19 mRNA vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "6 Months and older"
      },
      "enrollment_count": 1,
      "start_date": "2023-10-23",
      "completion_date": "2026-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-30",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05876377"
    },
    {
      "nct_id": "NCT03803202",
      "title": "A Single Ascending Dose Study in Adults (Stage 1) and Single Ascending Dose-Finding Study (Stage 2) in Elderly Subjects With ASP3772, A Pneumococcal Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Pneumonia, Bacterial",
        "Healthy Volunteers",
        "Pneumococcal Disease"
      ],
      "interventions": [
        {
          "name": "ASP3772",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PCV13",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PPSV23",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 630,
      "start_date": "2019-01-24",
      "completion_date": "2020-09-28",
      "has_results": true,
      "last_update_posted_date": "2023-12-21",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 26,
      "location_summary": "Banning, California • San Diego, California • San Marcos, California + 21 more",
      "locations": [
        {
          "city": "Banning",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Marcos",
          "state": "California"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Savannah",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03803202"
    },
    {
      "nct_id": "NCT03463577",
      "title": "The Safety of Boostrix Following Routine Immunization of Pregnant Women",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Whooping Cough"
      ],
      "interventions": [
        {
          "name": "Safety assessment following routine immunization with Boostrix",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 65783,
      "start_date": "2018-04-13",
      "completion_date": "2020-08-04",
      "has_results": true,
      "last_update_posted_date": "2022-05-18",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 1,
      "location_summary": "Pasadena, California",
      "locations": [
        {
          "city": "Pasadena",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03463577"
    },
    {
      "nct_id": "NCT05243875",
      "title": "Lupus Education Alliance Program",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Systemic Lupus Erythematosus",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "LEAP Education + Navigation",
          "type": "BEHAVIORAL"
        },
        {
          "name": "LEAP Education",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Tulane University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 274,
      "start_date": "2023-11-01",
      "completion_date": "2025-06-15",
      "has_results": false,
      "last_update_posted_date": "2025-08-03",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 1,
      "location_summary": "New Orleans, Louisiana",
      "locations": [
        {
          "city": "New Orleans",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05243875"
    },
    {
      "nct_id": "NCT03824236",
      "title": "A Study to Evaluate the Efficacy, Immunogenicity and Safety in a Sporozoite Challenge Model of a Fractional Booster Dose of GSK Biologicals' Candidate Malaria Vaccine Administered to Previously Vaccinated Healthy Malaria-naïve Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Malaria"
      ],
      "interventions": [
        {
          "name": "RTS,S/AS01E (SB257049)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 61,
      "start_date": "2019-02-05",
      "completion_date": "2019-09-26",
      "has_results": true,
      "last_update_posted_date": "2020-08-14",
      "last_synced_at": "2026-09-09T08:46:48.138Z",
      "location_count": 1,
      "location_summary": "Silver Spring, Maryland",
      "locations": [
        {
          "city": "Silver Spring",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03824236"
    }
  ]
}