{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vaccine+Response",
    "query": {
      "condition": "Vaccine Response"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 640,
    "total_pages": 64,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vaccine+Response&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T00:04:54.064Z",
  "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": "NCT01244802",
      "title": "Characterization of Human Memory Immune Responses to Prior Yellow Fever Vaccination",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Yellow Fever Vaccine"
      ],
      "interventions": [],
      "intervention_types": [],
      "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": 300,
      "start_date": "2010-11",
      "completion_date": "2029-10",
      "has_results": false,
      "last_update_posted_date": "2024-11-04",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "location_count": 1,
      "location_summary": "Decatur, Georgia",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01244802"
    },
    {
      "nct_id": "NCT04953754",
      "title": "Melatonin and Vaccine Response, Immunity, and Chronobiology Study",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccine Response",
        "Sleep",
        "Circadian Rhythm Disorders"
      ],
      "interventions": [
        {
          "name": "Melatonin",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Phillips Actiwatch Spectrum Plus",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DEVICE"
      ],
      "sponsor": "Walter Reed National Military Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 200,
      "start_date": "2022-10-25",
      "completion_date": "2025-06",
      "has_results": false,
      "last_update_posted_date": "2023-10-10",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04953754"
    },
    {
      "nct_id": "NCT01381029",
      "title": "Immune Response to Seasonal Influenza Vaccine in HIV Infected Individuals",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Influenza, Human",
        "Human Immunodeficiency Virus I Infection"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "George Washington University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 74,
      "start_date": "2009-09",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2023-05-19",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "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/NCT01381029"
    },
    {
      "nct_id": "NCT01165645",
      "title": "Lopinavir and Ritonavir in Improving Immune Response to Vaccines in Patients With Complete Remission Following A Bone Marrow Transplant for Hodgkin Lymphoma",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hodgkin Lymphoma",
        "Stage I Adult Hodgkin Lymphoma",
        "Stage II Adult Hodgkin Lymphoma",
        "Stage III Adult Hodgkin Lymphoma",
        "Stage IV Adult Hodgkin Lymphoma"
      ],
      "interventions": [
        {
          "name": "lopinavir",
          "type": "DRUG"
        },
        {
          "name": "ritonavir",
          "type": "DRUG"
        },
        {
          "name": "polymerase chain reaction",
          "type": "GENETIC"
        },
        {
          "name": "flow cytometry",
          "type": "OTHER"
        },
        {
          "name": "enzyme-linked immunosorbent assay",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "GENETIC",
        "OTHER"
      ],
      "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": 0,
      "start_date": "2010-11",
      "completion_date": "2011-12-14",
      "has_results": false,
      "last_update_posted_date": "2022-12-01",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01165645"
    },
    {
      "nct_id": "NCT05078905",
      "title": "Vaccine Responses to SARS-CoV-2 and Other Emerging Infectious Diseases",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19",
        "Vaccination",
        "Healthy Volunteer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1200,
      "start_date": "2021-10-13",
      "completion_date": "2050-01-01",
      "has_results": false,
      "last_update_posted_date": "2026-05-08",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05078905"
    },
    {
      "nct_id": "NCT00741039",
      "title": "Prospective Trial of Vaccine Responses Against Pneumococcus and Influenza in Adult Cancer Patients 65 Years of Age and Older",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Lung Cancer",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "inactivated influenza vaccine and the 23- valent pneumococcal vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "inactivated influenza vaccine and the PPV23 vaccine (Pneumovax)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 126,
      "start_date": "2008-08",
      "completion_date": "2012-08",
      "has_results": true,
      "last_update_posted_date": "2015-11-20",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00741039"
    },
    {
      "nct_id": "NCT04634513",
      "title": "Shigella CVD 31000: Study of Responses With Shigella-ETEC Vaccine Strain CVD 1208S-122",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Shigella Infection",
        "Enterotoxigenic Escherichia Coli Infection"
      ],
      "interventions": [
        {
          "name": "strain CVD 1208S-122",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 53,
      "start_date": "2022-09-29",
      "completion_date": "2024-10-01",
      "has_results": true,
      "last_update_posted_date": "2026-02-02",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04634513"
    },
    {
      "nct_id": "NCT00071851",
      "title": "Safety of and Immune Response to an HIV-1 DNA Vaccine (VRC HIVDNA009-00-VP) in HIV Uninfected Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "VRC-HIVDNA009-00-VP",
          "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": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 180,
      "start_date": "2003-12",
      "completion_date": "2005-10",
      "has_results": false,
      "last_update_posted_date": "2021-10-14",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "location_count": 14,
      "location_summary": "Birmingham, Alabama • San Francisco, California • Baltimore, Maryland + 8 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00071851"
    },
    {
      "nct_id": "NCT03618056",
      "title": "Evaluating HIV-1 Neutralization Antibody Breadth in Response to HIV gp120 Protein Vaccine in HIV-uninfected Adults With Quiescent Systemic Lupus Erythematosus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections",
        "Systemic Lupus Erythematosus"
      ],
      "interventions": [
        {
          "name": "AIDSVAX® B/E",
          "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": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 1,
      "start_date": "2018-12-19",
      "completion_date": "2020-07-17",
      "has_results": true,
      "last_update_posted_date": "2022-02-07",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03618056"
    },
    {
      "nct_id": "NCT00192153",
      "title": "Trial to Investigate Immune Responses Elicited by a Liquid Formulation of Influenza Virus Vaccine(CAIV-T)in Healthy Adults Aged 18 to 59 and Healthy Adults Aged 60 Years and Older",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "CAIV-T or TIV",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "MedImmune LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 240,
      "start_date": "2001-07",
      "completion_date": "2001-10",
      "has_results": false,
      "last_update_posted_date": "2021-09-13",
      "last_synced_at": "2026-05-22T00:04:54.064Z",
      "location_count": 2,
      "location_summary": "New Port Richey, Florida • Charlottesville, Virginia",
      "locations": [
        {
          "city": "New Port Richey",
          "state": "Florida"
        },
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00192153"
    }
  ]
}