{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=COVID19+Vaccine&page=3",
    "query": {
      "condition": "COVID19 Vaccine",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 326,
    "total_pages": 33,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=COVID19+Vaccine&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=COVID19+Vaccine&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T03:49:32.537Z",
  "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": "NCT04813796",
      "title": "A Study to Evaluate Safety, Reactogenicity, and Immunogenicity of mRNA-1283 and mRNA-1273 Vaccines in Healthy Adults Between 18 Years and 55 Years of Age to Prevent COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "mRNA-1283",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "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": 104,
      "start_date": "2021-03-11",
      "completion_date": "2023-07-25",
      "has_results": false,
      "last_update_posted_date": "2023-08-01",
      "last_synced_at": "2026-10-06T03:49:32.537Z",
      "location_count": 5,
      "location_summary": "Chandler, Arizona • San Diego, California • Melbourne, Florida + 2 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Melbourne",
          "state": "Florida"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04813796"
    },
    {
      "nct_id": "NCT05766189",
      "title": "Wastewater Surveillance to Boost COVID-19 Vaccine Uptake",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccination",
        "Wastewater Surveillance"
      ],
      "interventions": [
        {
          "name": "Wastewater vaccine prompts",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Syracuse University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 100000,
      "start_date": "2023-03-01",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-14",
      "last_synced_at": "2026-10-06T03:49:32.537Z",
      "location_count": 1,
      "location_summary": "Syracuse, New York",
      "locations": [
        {
          "city": "Syracuse",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05766189"
    },
    {
      "nct_id": "NCT05104359",
      "title": "COVID-19 Quantitative Antibody Titers & Booster Vaccinations",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19",
        "COVID-19 Vaccines",
        "Immunogenicity, Vaccine"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Epividian",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 825,
      "start_date": "2020-12-11",
      "completion_date": "2022-04-30",
      "has_results": false,
      "last_update_posted_date": "2022-07-27",
      "last_synced_at": "2026-10-06T03:49:32.537Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05104359"
    },
    {
      "nct_id": "NCT04847050",
      "title": "A Trial of the Safety and Immunogenicity of the COVID-19 Vaccine (mRNA-1273) in Participants With Hematologic Malignancies and Various Regimens of Immunosuppression, and in Participants With Solid Tumors on PD1/PDL1 Inhibitor Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Solid Tumor Malignancy",
        "Hematologic Malignancy",
        "Leukemia",
        "Lymphoma",
        "Multiple Myeloma"
      ],
      "interventions": [
        {
          "name": "Messenger ribonucleic acid (mRNA)-1273 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Messenger ribonucleic acid (mRNA)-1273 Vaccine Booster",
          "type": "BIOLOGICAL"
        },
        {
          "name": "ECG",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Antibiotics",
          "type": "OTHER"
        },
        {
          "name": "Anti-viral agents",
          "type": "OTHER"
        },
        {
          "name": "Anti-fungal agent",
          "type": "OTHER"
        },
        {
          "name": "Anti-emetics",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2021-04-28",
      "completion_date": "2023-05-25",
      "has_results": true,
      "last_update_posted_date": "2024-08-27",
      "last_synced_at": "2026-10-06T03:49:32.537Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04847050"
    },
    {
      "nct_id": "NCT07079670",
      "title": "Safety and Immunogenicity of NVX-CoV2705",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "COVID-19",
        "SARS-CoV-2 Infection"
      ],
      "interventions": [
        {
          "name": "NVX-CoV2705",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "12 Years to 90 Years"
      },
      "enrollment_count": 676,
      "start_date": "2025-10-09",
      "completion_date": "2026-05-11",
      "has_results": false,
      "last_update_posted_date": "2026-06-05",
      "last_synced_at": "2026-10-06T03:49:32.537Z",
      "location_count": 10,
      "location_summary": "Phoenix, Arizona • Melrose Park, Illinois • Lenexa, Kansas + 7 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Melrose Park",
          "state": "Illinois"
        },
        {
          "city": "Lenexa",
          "state": "Kansas"
        },
        {
          "city": "Lafayette",
          "state": "Louisiana"
        },
        {
          "city": "Southfield",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07079670"
    },
    {
      "nct_id": "NCT04821570",
      "title": "To Assess Immunogenicity of Coronavirus Disease 2019 (COVID-19) Vaccine in Cancer Patients Receiving Cancer Treatment",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer",
        "Lung Cancer",
        "Melanoma (Skin)"
      ],
      "interventions": [
        {
          "name": "COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2021-02-23",
      "completion_date": "2025-03-28",
      "has_results": false,
      "last_update_posted_date": "2023-04-04",
      "last_synced_at": "2026-10-06T03:49:32.537Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04821570"
    },
    {
      "nct_id": "NCT07758296",
      "title": "An Online Game to Help Canadian Adults Identify COVID-19 Vaccine Misinformation With One-Month Follow-Up",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COVID-19",
        "Vaccination Hesitancy",
        "Health Misinformation",
        "Communication"
      ],
      "interventions": [
        {
          "name": "Gamified misinformation refutation quiz",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Refutational text blog post (active control)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 4071,
      "start_date": "2022-12-08",
      "completion_date": "2023-02-13",
      "has_results": false,
      "last_update_posted_date": "2026-08-11",
      "last_synced_at": "2026-10-06T03:49:32.537Z",
      "location_count": 1,
      "location_summary": "Columbia, South Carolina",
      "locations": [
        {
          "city": "Columbia",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07758296"
    },
    {
      "nct_id": "NCT06441968",
      "title": "Safety and Immunogenicity Trial of MPV/S-2P SARS-CoV-2 Vaccine in Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "MPV/S-2P",
          "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": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 60,
      "start_date": "2024-07-01",
      "completion_date": "2025-11-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-20",
      "last_synced_at": "2026-10-06T03:49:32.537Z",
      "location_count": 3,
      "location_summary": "Decatur, Georgia • Mineola, New York • Houston, Texas",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Mineola",
          "state": "New York"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06441968"
    },
    {
      "nct_id": "NCT05972993",
      "title": "A Safety and Immune Response Study to Evaluate Varying Doses of an mRNA Vaccine Against Coronavirus Disease 2019 (COVID-19) in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "mRNA-CR-04 vaccine 10μg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-CR-04 vaccine 30μg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-CR-04 vaccine 100μg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "mRNA-CR-04 vaccine 3μg",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "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": 114,
      "start_date": "2023-08-07",
      "completion_date": "2024-10-14",
      "has_results": true,
      "last_update_posted_date": "2025-05-28",
      "last_synced_at": "2026-10-06T03:49:32.537Z",
      "location_count": 4,
      "location_summary": "San Diego, California • Melbourne, Florida • Peoria, Illinois + 1 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Melbourne",
          "state": "Florida"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05972993"
    },
    {
      "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": "2026-10-06T03:49:32.537Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05107479"
    }
  ]
}