{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=COVID-19+Vaccine+1",
    "query": {
      "intervention": "COVID-19 Vaccine 1"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 222,
    "total_pages": 23,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=COVID-19+Vaccine+1&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-30T19:30:31.352Z",
  "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": "NCT04723706",
      "title": "Response to SARS-CoV-2 Vaccine in Stem Cell Transplant and Cellular Therapy Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hematologic Disorders and Bone Marrow Failure, Hematopoietic Stem Cell Transplantation (HSCT) or Cellular Therapy (CART)"
      ],
      "interventions": [
        {
          "name": "COVID-19 serology IgG",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Henry Ford Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 33,
      "start_date": "2021-03-19",
      "completion_date": "2024-01-02",
      "has_results": false,
      "last_update_posted_date": "2024-04-23",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04723706"
    },
    {
      "nct_id": "NCT04694664",
      "title": "COVID-19 Vaccine Confidence Among Pregnant Women and Mothers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pregnancy Related",
        "Mothers"
      ],
      "interventions": [
        {
          "name": "This is an online survey with no intervention.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Pregistry",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 65 Years · Female only"
      },
      "enrollment_count": 18000,
      "start_date": "2020-10-01",
      "completion_date": "2020-12-01",
      "has_results": false,
      "last_update_posted_date": "2021-01-05",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04694664"
    },
    {
      "nct_id": "NCT05172011",
      "title": "Understanding the Long-term Impact of COVID on Children and Families",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "SARS-CoV-2 Infection"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "Up to 25 Years"
      },
      "enrollment_count": 15028,
      "start_date": "2022-03-01",
      "completion_date": "2027-05-23",
      "has_results": false,
      "last_update_posted_date": "2025-12-31",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 65,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • La Jolla, California + 51 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05172011"
    },
    {
      "nct_id": "NCT07266558",
      "title": "A Study to Evaluate the Efficacy and Safety of mRNA-1283 and mRNA-1273 in Participants 50 to 64 Years of Age Without High-Risk Conditions for Severe Coronavirus Disease 2019 (COVID-19)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1283",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "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": 30000,
      "start_date": "2025-11-26",
      "completion_date": "2027-06-16",
      "has_results": false,
      "last_update_posted_date": "2026-09-28",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 150,
      "location_summary": "Birmingham, Alabama • Cullman, Alabama • Mobile, Alabama + 127 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Cullman",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Glendale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07266558"
    },
    {
      "nct_id": "NCT05107479",
      "title": "Effectiveness of Interactive Voice Response for COVID-19 Vaccination Training in the Democratic Republic of the Congo",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COVID-19 Vaccine Knowledge",
        "COVID-19 Vaccine Beliefs"
      ],
      "interventions": [
        {
          "name": "COVID-19 Vaccine IVR Training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control Condition",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 8959,
      "start_date": "2021-11-09",
      "completion_date": "2022-02-10",
      "has_results": false,
      "last_update_posted_date": "2022-02-21",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05107479"
    },
    {
      "nct_id": "NCT04537208",
      "title": "Study of Recombinant Protein Vaccine Formulations Against COVID-19 in Healthy Adults 18 Years of Age and Older",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "COVID-19 (Healthy Volunteers)"
      ],
      "interventions": [
        {
          "name": "CoV2 preS dTM-AF03 (low-dose)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CoV2 preS dTM-AF03 (high-dose)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CoV2 preS dTM-AS03 (low-dose)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CoV2 preS dTM-AS03 (high-dose)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CoV2 preS dTM (high-dose) without adjuvant",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo (0.9% normal saline)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 441,
      "start_date": "2020-09-03",
      "completion_date": "2021-11-19",
      "has_results": true,
      "last_update_posted_date": "2025-09-17",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 11,
      "location_summary": "Birmingham, Alabama • Rolling Hills Estates, California • Hollywood, Florida + 7 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Rolling Hills Estates",
          "state": "California"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Melbourne",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04537208"
    },
    {
      "nct_id": "NCT04848584",
      "title": "Pfizer-BioNTech COVID-19 Vaccine Effectiveness Study - Kaiser Permanente Southern California",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Primary Exposure Status of Pfizer-BioNTech COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "BNT162b2 BA.4/5 bivalent",
          "type": "BIOLOGICAL"
        },
        {
          "name": "XBB.1.5-adapted vaccinated",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "0 Years and older"
      },
      "enrollment_count": 1,
      "start_date": "2021-05-15",
      "completion_date": "2025-04-30",
      "has_results": false,
      "last_update_posted_date": "2025-07-29",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 1,
      "location_summary": "Pasadena, California",
      "locations": [
        {
          "city": "Pasadena",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04848584"
    },
    {
      "nct_id": "NCT05392075",
      "title": "COVID-19 Breakthrough Infection in Fully Vaccinated People and in People Who Received a Booster Dose",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19 Pneumonia",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Pfizer COVID-19 mRNA vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Moderna COVID-19 mRNA vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Methodist Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 100,
      "start_date": "2023-03-15",
      "completion_date": "2023-08-17",
      "has_results": false,
      "last_update_posted_date": "2026-03-24",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05392075"
    },
    {
      "nct_id": "NCT04199169",
      "title": "Safety and Immunogenicity of a Nipah Virus Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Nipah Virus Infection"
      ],
      "interventions": [
        {
          "name": "HeV-sG-V",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Normal Saline Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Auro Vaccines LLC",
      "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": 192,
      "start_date": "2020-02-18",
      "completion_date": "2022-05-06",
      "has_results": false,
      "last_update_posted_date": "2022-11-17",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04199169"
    },
    {
      "nct_id": "NCT04761822",
      "title": "COVID19 SARS Vaccinations: Systemic Allergic Reactions to SARS-CoV-2 Vaccinations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "SARS-CoV Infection",
        "COVID-19",
        "Allergic Reaction",
        "Mast Cell Disorder"
      ],
      "interventions": [
        {
          "name": "Moderna COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pfizer-BioNTech COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "5 Years and older"
      },
      "enrollment_count": 746,
      "start_date": "2021-04-07",
      "completion_date": "2022-04-27",
      "has_results": true,
      "last_update_posted_date": "2025-08-12",
      "last_synced_at": "2026-09-30T19:30:31.352Z",
      "location_count": 29,
      "location_summary": "Tucson, Arizona • Little Rock, Arkansas • Los Angeles, California + 24 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04761822"
    }
  ]
}