{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=COVID19+Vaccine&page=2",
    "query": {
      "condition": "COVID19 Vaccine",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=COVID19+Vaccine&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T15:16:50.657Z",
  "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": "NCT04748185",
      "title": "Immunogenicity and Safety of Commercially Available Vaccines Against SARS-CoV-2 (COVID-19) in Patients With Hematologic Malignancies",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Monoclonal B-Cell Lymphocytosis",
        "Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma",
        "B-cell Non Hodgkin Lymphoma",
        "Hodgkin Lymphoma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 358,
      "start_date": "2021-01-28",
      "completion_date": "2022-07-13",
      "has_results": false,
      "last_update_posted_date": "2023-07-10",
      "last_synced_at": "2026-07-23T15:16:50.657Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04748185"
    },
    {
      "nct_id": "NCT04847596",
      "title": "A Multicenter Study to Assess Response to COVID-19 Vaccine in Multiple Sclerosis Participants Treated With Ofatumumab",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Relapsing Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Ofatumumab",
          "type": "OTHER"
        },
        {
          "name": "Covid-19 vaccine",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 25,
      "start_date": "2021-05-21",
      "completion_date": "2022-02-18",
      "has_results": false,
      "last_update_posted_date": "2023-01-25",
      "last_synced_at": "2026-07-23T15:16:50.657Z",
      "location_count": 4,
      "location_summary": "Phoenix, Arizona • Owosso, Michigan • St Louis, Missouri + 1 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Owosso",
          "state": "Michigan"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Plainview",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04847596"
    },
    {
      "nct_id": "NCT04871776",
      "title": "Use of Construal Level Theory to Inform Messaging to Increase Vaccination Against COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Covid19",
        "Vaccine Refusal"
      ],
      "interventions": [
        {
          "name": "Messaging informed by construal level theory",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3671,
      "start_date": "2022-02-18",
      "completion_date": "2022-08-17",
      "has_results": true,
      "last_update_posted_date": "2024-01-16",
      "last_synced_at": "2026-07-23T15:16:50.657Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04871776"
    },
    {
      "nct_id": "NCT04860297",
      "title": "A Study to Evaluate Safety and Immunogenicity of mRNA-1273 Vaccine to Prevent COVID-19 in Adult Organ Transplant Recipients and in Healthy Adult Participants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 234,
      "start_date": "2021-04-16",
      "completion_date": "2023-05-22",
      "has_results": true,
      "last_update_posted_date": "2024-06-18",
      "last_synced_at": "2026-07-23T15:16:50.657Z",
      "location_count": 15,
      "location_summary": "Mesa, Arizona • San Diego, California • New Haven, Connecticut + 12 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04860297"
    },
    {
      "nct_id": "NCT07536308",
      "title": "A Safety and Immunogenicity Trial of OCU500, ChAd36 Vector Encoding SARS-CoV-2 Spike Vaccine Via Intranasal and Inhalational Routes in Previously Vaccinated Adults",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "OCU500",
          "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": 80,
      "start_date": "2026-05-26",
      "completion_date": "2027-11-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-17",
      "last_synced_at": "2026-07-23T15:16:50.657Z",
      "location_count": 6,
      "location_summary": "Decatur, Georgia • Baltimore, Maryland • Boston, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07536308"
    },
    {
      "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": "2026-07-23T15:16:50.657Z",
      "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"
    },
    {
      "nct_id": "NCT06128928",
      "title": "Connecting Friends and Health Workers to Boost COVID-19 Vaccination in Latino Communities",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COVID-19",
        "Vaccine"
      ],
      "interventions": [
        {
          "name": "REDES",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 900,
      "start_date": "2023-07-08",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-11-12",
      "last_synced_at": "2026-07-23T15:16:50.657Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06128928"
    },
    {
      "nct_id": "NCT05185687",
      "title": "Public Support for COVID-19 Test Allocation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Health Equity",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "First Come, First Served",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Random",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Disadvantaged Priority & Random",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2019,
      "start_date": "2022-01-04",
      "completion_date": "2022-01-06",
      "has_results": false,
      "last_update_posted_date": "2022-01-11",
      "last_synced_at": "2026-07-23T15:16:50.657Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05185687"
    },
    {
      "nct_id": "NCT04705116",
      "title": "COVID-19 Vaccines International Pregnancy Exposure Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "COVID-19 vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pregistry",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 1184,
      "start_date": "2021-06-01",
      "completion_date": "2026-04-26",
      "has_results": false,
      "last_update_posted_date": "2026-07-17",
      "last_synced_at": "2026-07-23T15:16:50.657Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04705116"
    },
    {
      "nct_id": "NCT05279365",
      "title": "PROSPECTIVE OPEN LABEL CLINICAL TRIAL TO ADMINISTER A BOOSTER DOSE OF PFIZER/BIONTECH OR MODERNA COVID-19 VACCINE IN HIGH-RISK INDIVIDUALS",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "SARS CoV 2 Infection",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Pfizer/BioNTech (BNT162b2)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Moderna",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "DHR Health Institute for Research and Development",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1000,
      "start_date": "2021-07-30",
      "completion_date": "2023-08-31",
      "has_results": false,
      "last_update_posted_date": "2022-03-29",
      "last_synced_at": "2026-07-23T15:16:50.657Z",
      "location_count": 4,
      "location_summary": "Brownsville, Texas • Edinburg, Texas • Rio Grande City, Texas",
      "locations": [
        {
          "city": "Brownsville",
          "state": "Texas"
        },
        {
          "city": "Edinburg",
          "state": "Texas"
        },
        {
          "city": "Edinburg",
          "state": "Texas"
        },
        {
          "city": "Rio Grande City",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05279365"
    }
  ]
}