{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Immunization&page=5",
    "query": {
      "condition": "Immunization",
      "page": 5
    },
    "page_size": 10
  },
  "pagination": {
    "page": 5,
    "page_size": 10,
    "total_count": 1351,
    "total_pages": 136,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Immunization&page=6&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Immunization&page=4&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T22:09:39.519Z",
  "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": "NCT01852656",
      "title": "Effectiveness of Influenza Vaccine Reminder Systems",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthma",
        "Chronic Obstructive Pulmonary Disease"
      ],
      "interventions": [
        {
          "name": "Postcard and IVR Reminder Group",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Postcard Only Reminder Group",
          "type": "BEHAVIORAL"
        },
        {
          "name": "IVR Only Reminder Group",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Kaiser Permanente",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "19 Years to 64 Years"
      },
      "enrollment_count": 12255,
      "start_date": "2012-09",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2013-05-14",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01852656"
    },
    {
      "nct_id": "NCT06664151",
      "title": "A Phase 0 Window of Opportunity Trial of Intratumoral Seasonal Influenza Immunization in Cutaneous Squamous Cell Carcinoma (CSCC) Patients Awaiting Curative Excision",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Skin Cancer",
        "Cutaneous Squamous Cell Carcinoma (CSCC)",
        "Cutaneous Squamous Cell Cancer"
      ],
      "interventions": [
        {
          "name": "Fluzone Trivalent",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Dana-Farber Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2024-11-26",
      "completion_date": "2027-08-30",
      "has_results": false,
      "last_update_posted_date": "2026-10-19",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06664151"
    },
    {
      "nct_id": "NCT04283461",
      "title": "Safety and Immunogenicity Study of 2019-nCoV Vaccine (mRNA-1273) for Prophylaxis of SARS-CoV-2 Infection (COVID-19)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "COVID-19",
        "COVID-19 Immunisation"
      ],
      "interventions": [
        {
          "name": "mRNA-1273",
          "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": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 120,
      "start_date": "2020-03-16",
      "completion_date": "2022-04-26",
      "has_results": true,
      "last_update_posted_date": "2024-03-18",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 3,
      "location_summary": "Decatur, Georgia • Bethesda, Maryland • Seattle, Washington",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04283461"
    },
    {
      "nct_id": "NCT00183261",
      "title": "Immune Response to a Therapeutic HIV Vaccine Followed by Treatment Interruption in Patients With Acute or Recent HIV Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "MRKAd5 HIV-1 gag/pol/nef",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MRKAd5 HIV-1 gag/pol/nef placebo",
          "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": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 25,
      "start_date": "2006-03",
      "completion_date": "2010-10",
      "has_results": false,
      "last_update_posted_date": "2021-11-01",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 13,
      "location_summary": "San Diego, California • San Francisco, California • Torrance, California + 7 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00183261"
    },
    {
      "nct_id": "NCT01924169",
      "title": "Lenalidomide as Immune Adjuvant in Patient's With Chronic Lymphocytic Leukemia (CLL)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hematologic Disorder"
      ],
      "interventions": [
        {
          "name": "Lenalidomide",
          "type": "DRUG"
        },
        {
          "name": "Influenza Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pneumovax Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3,
      "start_date": "2014-11-24",
      "completion_date": "2017-02-21",
      "has_results": true,
      "last_update_posted_date": "2018-09-20",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01924169"
    },
    {
      "nct_id": "NCT01660529",
      "title": "Multi-peptide Vaccine With Basilixumab for Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Metastatic Breast Cancer"
      ],
      "interventions": [
        {
          "name": "hTERT",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2012-06",
      "completion_date": "2015-11-20",
      "has_results": false,
      "last_update_posted_date": "2019-06-25",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01660529"
    },
    {
      "nct_id": "NCT04590066",
      "title": "Testing Multiple Behavioral Science Strategies to Increase Flu-Shot Rates at a Large Retail Pharmacy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "Flu shot text messages",
          "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": 734383,
      "start_date": "2020-09-25",
      "completion_date": "2020-12-31",
      "has_results": false,
      "last_update_posted_date": "2021-02-01",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04590066"
    },
    {
      "nct_id": "NCT00575653",
      "title": "Safety Study of GBS Following Menactra Meningococcal Vaccination",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Guillain-Barre Syndrome"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Harvard Pilgrim Health Care",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "11 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "11 Years to 21 Years"
      },
      "enrollment_count": 6000000,
      "start_date": "2005-03",
      "completion_date": "2010-12-31",
      "has_results": false,
      "last_update_posted_date": "2017-03-16",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 6,
      "location_summary": "Wilmington, Delaware • Honolulu, Hawaii • Boston, Massachusetts + 3 more",
      "locations": [
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Waltham",
          "state": "Massachusetts"
        },
        {
          "city": "Blue Bell",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00575653"
    },
    {
      "nct_id": "NCT04796584",
      "title": "Efficacy of COVID-19 Vaccination in Patients With Multiple Sclerosis Treated With Immune Modulating Medication",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Analysis of cell-mediated and antibody-mediated immunity to SARS-CoV-2 virus",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Providence Health & Services",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 20,
      "start_date": "2022-07-11",
      "completion_date": "2022-10-25",
      "has_results": false,
      "last_update_posted_date": "2023-04-03",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04796584"
    },
    {
      "nct_id": "NCT06435338",
      "title": "Patient Decision Aid Tool for HPV Vaccination Among Adults Ages 27-45 Years Old",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Decision Aid",
        "Hpv"
      ],
      "interventions": [
        {
          "name": "Patient decision aid",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "The University of Texas Health Science Center at San Antonio",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "27 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "27 Years to 45 Years"
      },
      "enrollment_count": 632,
      "start_date": "2023-12-13",
      "completion_date": "2024-01-18",
      "has_results": false,
      "last_update_posted_date": "2024-05-30",
      "last_synced_at": "2026-10-20T22:09:39.519Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06435338"
    }
  ]
}