{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=COVID-19+vaccines&page=2",
    "query": {
      "intervention": "COVID-19 vaccines",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 403,
    "total_pages": 41,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=COVID-19+vaccines&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=COVID-19+vaccines&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-10T03:13:35.119Z",
  "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": "NCT04372589",
      "title": "Antithrombotic Therapy to Ameliorate Complications of COVID-19 (ATTACC)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "COVID-19",
        "Pneumonia"
      ],
      "interventions": [
        {
          "name": "Heparin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Manitoba",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1200,
      "start_date": "2020-05-20",
      "completion_date": "2021-05-17",
      "has_results": false,
      "last_update_posted_date": "2021-07-27",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 13,
      "location_summary": "Atlanta, Georgia • Chicago, Illinois • Jefferson, Louisiana + 10 more",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Jefferson",
          "state": "Louisiana"
        },
        {
          "city": "Portland",
          "state": "Maine"
        },
        {
          "city": "Dearborn",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04372589"
    },
    {
      "nct_id": "NCT07730450",
      "title": "A Study to Learn About a COVID-19 Vaccine in Healthy Adults 18 Through 64 Years of Age",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "COVID-19 Vaccines"
      ],
      "interventions": [
        {
          "name": "BNT162b2 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Tdap Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "BioNTech SE",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 200,
      "start_date": "2026-07-23",
      "completion_date": "2027-08-20",
      "has_results": false,
      "last_update_posted_date": "2026-08-07",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 5,
      "location_summary": "Walnut Creek, California • Miami Lakes, Florida • Honolulu, Hawaii + 2 more",
      "locations": [
        {
          "city": "Walnut Creek",
          "state": "California"
        },
        {
          "city": "Miami Lakes",
          "state": "Florida"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07730450"
    },
    {
      "nct_id": "NCT04770649",
      "title": "Vaccine Observation to Include All Communities for Equitable Science",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vaccine Response Impaired",
        "Vaccine Adverse Reaction"
      ],
      "interventions": [
        {
          "name": "COVID-19 vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Persephone Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2021-04-01",
      "completion_date": "2022-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-04-05",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04770649"
    },
    {
      "nct_id": "NCT04703790",
      "title": "Acceptability of a COVID-19 Vaccine Among US Adults Over Two Time Periods",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19",
        "Vaccine Acceptability"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1208,
      "start_date": "2021-04-07",
      "completion_date": "2022-02-18",
      "has_results": false,
      "last_update_posted_date": "2023-03-23",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04703790"
    },
    {
      "nct_id": "NCT05054218",
      "title": "COVID-19 Immunogenicity of a Third Dose of mRNA-1273 Vaccine Among Cancer Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19",
        "SARS-CoV2 Infection"
      ],
      "interventions": [
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 336,
      "start_date": "2021-09-10",
      "completion_date": "2022-08-29",
      "has_results": false,
      "last_update_posted_date": "2023-04-14",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05054218"
    },
    {
      "nct_id": "NCT05910879",
      "title": "RADx-UP Phase 3D (Oregon Saludable: Juntos Podemos)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Health Behavior",
        "Health Care Utilization",
        "Vaccine Hesitancy"
      ],
      "interventions": [
        {
          "name": "Self-Affirmation Implementation Intentions (SAII) Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Promotores de Salud (Health Education)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Oregon",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 625,
      "start_date": "2023-04-22",
      "completion_date": "2025-02-28",
      "has_results": true,
      "last_update_posted_date": "2026-08-12",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 1,
      "location_summary": "Eugene, Oregon",
      "locations": [
        {
          "city": "Eugene",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05910879"
    },
    {
      "nct_id": "NCT04796896",
      "title": "A Study to Evaluate Safety and Effectiveness of mRNA-1273 COVID-19 Vaccine in Healthy Children Between 6 Months of Age and Less Than 12 Years of Age",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273.214",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "6 Months to 11 Years"
      },
      "enrollment_count": 11942,
      "start_date": "2021-03-15",
      "completion_date": "2024-03-15",
      "has_results": true,
      "last_update_posted_date": "2025-06-13",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 83,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Anaheim, California + 68 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Banning",
          "state": "California"
        },
        {
          "city": "El Monte",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04796896"
    },
    {
      "nct_id": "NCT07300839",
      "title": "A Study to Learn About a COVID-19 Vaccine in Healthy Adults 50 Through 64 Years of Age",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "COVID-19",
        "SARS-COV-2 Infection"
      ],
      "interventions": [
        {
          "name": "BNT162b2 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "BioNTech SE",
      "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": 5240,
      "start_date": "2025-12-10",
      "completion_date": "2026-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-13",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 196,
      "location_summary": "Anniston, Alabama • Athens, Alabama • Birmingham, Alabama + 148 more",
      "locations": [
        {
          "city": "Anniston",
          "state": "Alabama"
        },
        {
          "city": "Athens",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Cullman",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07300839"
    },
    {
      "nct_id": "NCT05570630",
      "title": "VAX-MOM COVID-19: Increasing Maternal COVID-19 Vaccination",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Immunization; Infection",
        "Pregnancy Related",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "VAX-MOM COVID-19 Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Standard of Care",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 6911,
      "start_date": "2022-10-21",
      "completion_date": "2024-07-31",
      "has_results": true,
      "last_update_posted_date": "2025-09-04",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05570630"
    },
    {
      "nct_id": "NCT04953065",
      "title": "Coronavirus Disease 2019 (COVID-19) Vaccination in Cancer Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Malignancies Multiple"
      ],
      "interventions": [
        {
          "name": "COVID-19 vaccine hesitancy and acceptance survey",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Monika Joshi",
      "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": 130,
      "start_date": "2021-08-30",
      "completion_date": "2023-01-31",
      "has_results": false,
      "last_update_posted_date": "2024-05-09",
      "last_synced_at": "2026-10-10T03:13:35.119Z",
      "location_count": 1,
      "location_summary": "Hershey, Pennsylvania",
      "locations": [
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04953065"
    }
  ]
}