{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=COVID-19+Immunization&page=2",
    "query": {
      "condition": "COVID-19 Immunization",
      "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=COVID-19+Immunization&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-06-11T09:10:21.518Z",
  "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": "NCT05074433",
      "title": "A Study to Evaluate Efficacy and Safety of Casirivimab+Imdevimab (Monoclonal Antibodies) for Prevention of COVID-19 in Immunocompromised Adolescents and Adults",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Immunocompromised"
      ],
      "interventions": [
        {
          "name": "casirivimab+imdevimab",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Regeneron Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 66,
      "start_date": "2021-10-25",
      "completion_date": "2022-05-18",
      "has_results": true,
      "last_update_posted_date": "2025-10-20",
      "last_synced_at": "2026-06-11T09:10:21.518Z",
      "location_count": 66,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Long Beach, California + 48 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05074433"
    },
    {
      "nct_id": "NCT05764174",
      "title": "Digital Applications to Monitor Novel Coronavirus Disease and Response in Colombia - Syndromic and Vaccination Surveillance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccination Refusal",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Factual messages",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Narrative message",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Mixed message",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins Bloomberg School of Public Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2409,
      "start_date": "2022-09-21",
      "completion_date": "2022-12-17",
      "has_results": false,
      "last_update_posted_date": "2023-03-10",
      "last_synced_at": "2026-06-11T09:10:21.518Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05764174"
    },
    {
      "nct_id": "NCT05238467",
      "title": "Immunological Responses of COVID-19 Vaccination",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancer; Chemotherapy"
      ],
      "interventions": [
        {
          "name": "COVID antibody titers in the blood",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University Hospitals Cleveland Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 42,
      "start_date": "2021-05-21",
      "completion_date": "2023-02-13",
      "has_results": false,
      "last_update_posted_date": "2023-02-21",
      "last_synced_at": "2026-06-11T09:10:21.518Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05238467"
    },
    {
      "nct_id": "NCT06821100",
      "title": "Thymalfasin (Thymosin Alpha 1; Ta1) as an Enhancer of Vaccine Response Among Older Adults Receiving Booster Doses of COVID-19 Vaccine",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Vaccine Response",
        "COVID-19 Vaccine",
        "Immune Response to Covid 19 Vaccination"
      ],
      "interventions": [
        {
          "name": "Thymalfasin (Thymosin alpha 1, Ta1)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The Methodist Hospital Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "65 Years to 100 Years"
      },
      "enrollment_count": 75,
      "start_date": "2024-12-02",
      "completion_date": "2026-12-01",
      "has_results": false,
      "last_update_posted_date": "2025-07-31",
      "last_synced_at": "2026-06-11T09:10:21.518Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06821100"
    },
    {
      "nct_id": "NCT04910971",
      "title": "Quantification of Binding and Neutralizing Antibody Levels in COVID-19 Vaccinated Health Care Workers Over 1 Year",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19 Vaccine",
        "Corona Virus Infection",
        "Vaccine Adverse Reaction",
        "Vaccine Response",
        "Inflammation",
        "Thrombosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "LifeBridge Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2021-01-31",
      "completion_date": "2022-07-28",
      "has_results": false,
      "last_update_posted_date": "2021-06-02",
      "last_synced_at": "2026-06-11T09:10:21.518Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04910971"
    },
    {
      "nct_id": "NCT04348656",
      "title": "CONvalescent Plasma for Hospitalized Adults With COVID-19 Respiratory Illness (CONCOR-1)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Convalescent plasma",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Hamilton Health Sciences Corporation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 940,
      "start_date": "2020-03-14",
      "completion_date": "2021-06-16",
      "has_results": true,
      "last_update_posted_date": "2022-03-03",
      "last_synced_at": "2026-06-11T09:10:21.518Z",
      "location_count": 3,
      "location_summary": "Brooklyn, New York • New York, New York",
      "locations": [
        {
          "city": "Brooklyn",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04348656"
    },
    {
      "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": "2026-06-11T09:10:21.518Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04871776"
    },
    {
      "nct_id": "NCT06020118",
      "title": "Comparative Immunogenicity of Concomitant vs Sequential mRNA COVID-19 and Influenza Vaccinations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Simultaneous Vaccination (Influenza Vaccine and mRNA COVID booster)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Sequential Vaccination (Influenza vaccine then mRNA COVID booster)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Sequential Vaccination (mRNA COVID booster then Influenza vaccine)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "6 Years to 64 Years"
      },
      "enrollment_count": 455,
      "start_date": "2023-09-25",
      "completion_date": "2024-05-17",
      "has_results": true,
      "last_update_posted_date": "2025-06-13",
      "last_synced_at": "2026-06-11T09:10:21.518Z",
      "location_count": 8,
      "location_summary": "Phoenix, Arizona • Tempe, Arizona • Atlanta, Georgia + 4 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06020118"
    },
    {
      "nct_id": "NCT05031468",
      "title": "Multisite Observational Maternal and Infant Study for COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Licensed or EUA SARS-CoV-2 vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 562,
      "start_date": "2021-07-06",
      "completion_date": "2023-08-16",
      "has_results": false,
      "last_update_posted_date": "2024-06-27",
      "last_synced_at": "2026-06-11T09:10:21.518Z",
      "location_count": 10,
      "location_summary": "Atlanta, Georgia • Chicago, Illinois • New York, New York + 6 more",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05031468"
    },
    {
      "nct_id": "NCT04542395",
      "title": "COVID-2019 Testing and Vaccination Among African American and Latinx Public Housing Residents",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Coronavirus"
      ],
      "interventions": [
        {
          "name": "Increasing Willingness and Uptake of COVID-19 Testing and Vaccination",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Charles Drew University of Medicine and Science",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2023-06-01",
      "completion_date": "2025-11-30",
      "has_results": false,
      "last_update_posted_date": "2022-08-19",
      "last_synced_at": "2026-06-11T09:10:21.518Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04542395"
    }
  ]
}