{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=COVID-19+vaccine&page=5",
    "query": {
      "intervention": "COVID-19 vaccine",
      "page": 5
    },
    "page_size": 10
  },
  "pagination": {
    "page": 5,
    "page_size": 10,
    "total_count": 404,
    "total_pages": 41,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=COVID-19+vaccine&page=6&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=COVID-19+vaccine&page=4&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-13T16:42:04.862Z",
  "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": "NCT04569786",
      "title": "Dose Ranging Trial to Assess Safety and Immunogenicity of V590 (COVID-19 Vaccine) in Healthy Adults (V590-001)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Coronavirus Disease (COVID-19)"
      ],
      "interventions": [
        {
          "name": "V590",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Merck Sharp & Dohme LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 232,
      "start_date": "2020-10-29",
      "completion_date": "2021-02-18",
      "has_results": true,
      "last_update_posted_date": "2021-12-29",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 7,
      "location_summary": "Tempe, Arizona • Miami, Florida • South Miami, Florida + 4 more",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "South Miami",
          "state": "Florida"
        },
        {
          "city": "Springfield",
          "state": "Missouri"
        },
        {
          "city": "Lincoln",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04569786"
    },
    {
      "nct_id": "NCT05894655",
      "title": "Community-engaged Optimization of COVID-19 Rapid Evaluation And TEsting Experiences",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COVID-19",
        "COVID-19 Pandemic"
      ],
      "interventions": [
        {
          "name": "COVID-19 walk-up, on-site testing strategy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Community Health Worker (CHW) leading testing navigation and general preventive care reminders",
          "type": "BEHAVIORAL"
        },
        {
          "name": "No-cost self-testing kit vending machines",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 6527,
      "start_date": "2023-08-28",
      "completion_date": "2025-10-08",
      "has_results": false,
      "last_update_posted_date": "2025-11-04",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 1,
      "location_summary": "San Ysidro, California",
      "locations": [
        {
          "city": "San Ysidro",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05894655"
    },
    {
      "nct_id": "NCT04830046",
      "title": "Covid-19 Vaccine Responsiveness in MM and Waldenstrom",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Myeloma",
        "Waldenstrom Macroglobulinemia",
        "Immune System Disorder",
        "Covid19"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 146,
      "start_date": "2021-04-15",
      "completion_date": "2022-09-14",
      "has_results": false,
      "last_update_posted_date": "2025-11-26",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04830046"
    },
    {
      "nct_id": "NCT06923137",
      "title": "A Study to Learn About How Well Yearly Updates to the COVID-19 Vaccine Work to Protect People From COVID-19 and How Much Money People Spend on Healthcare for COVID-19",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19 SARS-CoV-2 Infection",
        "COVID-19",
        "COVID-19 Infection",
        "Coronavirus Disease 2019 (COVID-19)",
        "COVID-19 (Coronavirus Disease 2019)",
        "COVID-19 Vaccination",
        "COVID-19 Vaccines",
        "SARS-CoV-2 Infection, COVID19",
        "SARS-CoV-2 Infection, COVID-19"
      ],
      "interventions": [
        {
          "name": "BNT162b2",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": "2025-04-16",
      "completion_date": "2030-10-31",
      "has_results": false,
      "last_update_posted_date": "2025-11-19",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06923137"
    },
    {
      "nct_id": "NCT05260437",
      "title": "Safety, Reactogenicity, and Immunogenicity Trial of CV2CoV mRNA Vaccine Against SARS-CoV-2 in Seropositive Adult Participants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "COVID-19",
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "CV2CoV (2 µg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CV2CoV (4 µg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CV2CoV (8 µg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CV2CoV (12 µg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CV2CoV (16 µg)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "CV2CoV (20 µg)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 99,
      "start_date": "2022-03-24",
      "completion_date": "2023-03-07",
      "has_results": true,
      "last_update_posted_date": "2024-08-12",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 24,
      "location_summary": "Aurora, Colorado • Hallandale, Florida • Lakeland, Florida + 11 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Hallandale",
          "state": "Florida"
        },
        {
          "city": "Hallandale",
          "state": "Florida"
        },
        {
          "city": "Lakeland",
          "state": "Florida"
        },
        {
          "city": "Lakeland",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05260437"
    },
    {
      "nct_id": "NCT07215520",
      "title": "Safety and Tolerability of a Newcastle Disease Virus-Based Mucosal COVID-19 Vaccine in Previously Vaccinated Adults",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "NDV-HXP-S-KP.2",
          "type": "BIOLOGICAL"
        },
        {
          "name": "COVID-19 mRNA Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "CastleVax Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2025-11-03",
      "completion_date": "2026-09-06",
      "has_results": false,
      "last_update_posted_date": "2026-07-22",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 2,
      "location_summary": "Colorado Springs, Colorado • Burlington, Massachusetts",
      "locations": [
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        },
        {
          "city": "Burlington",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07215520"
    },
    {
      "nct_id": "NCT04025580",
      "title": "Systems Analyses of the Immune Response to the Seasonal Influenza Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Healthy Volunteer"
      ],
      "interventions": [
        {
          "name": "Flucelvax",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluvirin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fluzone High Dose",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 98,
      "start_date": "2019-10-02",
      "completion_date": "2023-01-31",
      "has_results": true,
      "last_update_posted_date": "2024-01-02",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04025580"
    },
    {
      "nct_id": "NCT04776317",
      "title": "Chimpanzee Adenovirus and Self-Amplifying mRNA Prime-Boost Prophylactic Vaccines Against SARS-CoV-2 in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "ChAdV68-S",
          "type": "BIOLOGICAL"
        },
        {
          "name": "ChAdV68-S-TCE",
          "type": "BIOLOGICAL"
        },
        {
          "name": "SAM-LNP-S",
          "type": "BIOLOGICAL"
        },
        {
          "name": "SAM-LNP-S-TCE",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Sodium Chloride, 0.9%",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 81,
      "start_date": "2021-03-25",
      "completion_date": "2023-09-15",
      "has_results": true,
      "last_update_posted_date": "2025-05-16",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 4,
      "location_summary": "Decatur, Georgia • St Louis, Missouri • Houston, Texas + 1 more",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04776317"
    },
    {
      "nct_id": "NCT05037097",
      "title": "A Trial Evaluating the Safety and Immunogenicity of 3 COVID-19 SARS-CoV-2 RNA Vaccines in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "COVID-19",
        "SARS-CoV-2 Infection",
        "Corona Virus Infection"
      ],
      "interventions": [
        {
          "name": "ARCT-165",
          "type": "BIOLOGICAL"
        },
        {
          "name": "ARCT-154",
          "type": "BIOLOGICAL"
        },
        {
          "name": "ARCT-021",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Arcturus Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "21 Years to 80 Years"
      },
      "enrollment_count": 72,
      "start_date": "2021-08-30",
      "completion_date": "2023-12-19",
      "has_results": true,
      "last_update_posted_date": "2025-10-15",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 2,
      "location_summary": "Wichita, Kansas • Kansas City, Missouri",
      "locations": [
        {
          "city": "Wichita",
          "state": "Kansas"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05037097"
    },
    {
      "nct_id": "NCT05975060",
      "title": "A Study to Evaluate the Safety and Immunogenicity of an (Omicron Subvariant) COVID-19 Vaccine Booster Dose in Previously Vaccinated Participants and Unvaccinated Participants.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "XBB.1.5 Vaccine (Booster)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "XBB.1.5 Vaccine (single dose)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novavax",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "54 Years",
        "sex": "ALL",
        "summary": "18 Years to 54 Years"
      },
      "enrollment_count": 660,
      "start_date": "2023-09-07",
      "completion_date": "2024-05-20",
      "has_results": false,
      "last_update_posted_date": "2024-05-30",
      "last_synced_at": "2026-10-13T16:42:04.862Z",
      "location_count": 30,
      "location_summary": "Mobile, Alabama • Sacramento, California • Colorado Springs, Colorado + 26 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        },
        {
          "city": "Coral Gables",
          "state": "Florida"
        },
        {
          "city": "Fort Myers",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05975060"
    }
  ]
}