{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=hepatitis+A+vaccine",
    "query": {
      "intervention": "hepatitis A vaccine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 136,
    "total_pages": 14,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=hepatitis+A+vaccine&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-28T20:15:28.388Z",
  "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": "NCT00587249",
      "title": "ICC-1132 - Candidate Vaccine Against P Falciparum Malaria",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Plasmodium Falciparum Malaria"
      ],
      "interventions": [
        {
          "name": "Malaria ICC-1132",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Alhydrogel",
          "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": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 75,
      "start_date": "2002-07",
      "completion_date": "2005-07",
      "has_results": false,
      "last_update_posted_date": "2013-04-12",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00587249"
    },
    {
      "nct_id": "NCT00197002",
      "title": "Immune Response & Safety of a Hepatitis A Vaccine Given Together With a Pneumococcal Vaccine in Healthy Children 15 m of Age",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis A"
      ],
      "interventions": [
        {
          "name": "GSK Biologicals 2-dose inactivated hepatitis A vaccine (Havrix)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Prevnar™",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Months",
        "maximum_age": "13 Months",
        "sex": "ALL",
        "summary": "12 Months to 13 Months"
      },
      "enrollment_count": 521,
      "start_date": "2003-09-11",
      "completion_date": "2006-01-16",
      "has_results": true,
      "last_update_posted_date": "2018-08-06",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 18,
      "location_summary": "Centennial, Colorado • Bardstown, Kentucky • Louisville, Kentucky + 13 more",
      "locations": [
        {
          "city": "Centennial",
          "state": "Colorado"
        },
        {
          "city": "Bardstown",
          "state": "Kentucky"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00197002"
    },
    {
      "nct_id": "NCT00958763",
      "title": "Alcohol Use Reduction in Methadone Individuals With Hepatitis C Virus(HCV)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis C"
      ],
      "interventions": [
        {
          "name": "Motivational Interviewing, Single - MIS",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Motivational Interviewing Group",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Care Group - UCG",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 219,
      "start_date": "2006-03",
      "completion_date": "2008-12",
      "has_results": false,
      "last_update_posted_date": "2009-08-13",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 3,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00958763"
    },
    {
      "nct_id": "NCT00224484",
      "title": "Safety Study of Herpes Simplex Vaccine in HSV Seronegative and Seropositive Females Between 10 and 17 Years Old",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Herpes Simplex"
      ],
      "interventions": [
        {
          "name": "GSK208141",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Havrix (investigational formulation)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "17 Years",
        "sex": "FEMALE",
        "summary": "10 Years to 17 Years · Female only"
      },
      "enrollment_count": 5960,
      "start_date": "2004-04-07",
      "completion_date": "2007-07-24",
      "has_results": true,
      "last_update_posted_date": "2019-01-07",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 66,
      "location_summary": "Birmingham, Alabama • Chandler, Arizona • Mesa, Arizona + 54 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00224484"
    },
    {
      "nct_id": "NCT00474526",
      "title": "A Study to Evaluate Safety and Immune Response of Novartis Meningococcal ACWY Vaccine In Infants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Meningitis, Meningococcal"
      ],
      "interventions": [
        {
          "name": "Meningococcal ACWY Conjugate Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "DTaP-IPV-HBV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Hib",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Rotavirus",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pneumococcal 7-valent Conjugate Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "HAV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MMR-V",
          "type": "BIOLOGICAL"
        },
        {
          "name": "DTaP",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novartis Vaccines",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Months",
        "maximum_age": "2 Months",
        "sex": "ALL",
        "summary": "2 Months to 2 Months"
      },
      "enrollment_count": 4545,
      "start_date": "2007-03",
      "completion_date": "2009-11",
      "has_results": true,
      "last_update_posted_date": "2014-03-24",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 53,
      "location_summary": "Bessemer, Alabama • Birmingham, Alabama • Downey, California + 43 more",
      "locations": [
        {
          "city": "Bessemer",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Downey",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00474526"
    },
    {
      "nct_id": "NCT04162223",
      "title": "Hepatitis B Vaccine in Seniors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Hepatitis B Vaccination"
      ],
      "interventions": [
        {
          "name": "Subcutaneous fat injection of Recombivax-HB",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Intramuscular injection of Recombivax-HB",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 52,
      "start_date": "2000-03-29",
      "completion_date": "2003-05-20",
      "has_results": false,
      "last_update_posted_date": "2019-11-14",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04162223"
    },
    {
      "nct_id": "NCT03207750",
      "title": "This Study Will Evaluate the Immunogenicity, Reactogenicity and Safety of the Routine Infant Vaccines Pediarix®, Hiberix® and Prevenar 13® When Co-administered With GlaxoSmithKline (GSK) Biologicals' Liquid Human Rotavirus Vaccine (HRV) as Compared to GSK's Licensed Lyophilized Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Rotavirus Infection",
        "Rotavirus Vaccines"
      ],
      "interventions": [
        {
          "name": "Rotarix",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pediarix",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Hiberix",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Prevenar 13",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Weeks",
        "maximum_age": "12 Weeks",
        "sex": "ALL",
        "summary": "6 Weeks to 12 Weeks"
      },
      "enrollment_count": 1280,
      "start_date": "2017-09-14",
      "completion_date": "2019-03-01",
      "has_results": true,
      "last_update_posted_date": "2020-12-29",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 47,
      "location_summary": "Birmingham, Alabama • Fayetteville, Arkansas • Jonesboro, Arkansas + 40 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Daly City",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03207750"
    },
    {
      "nct_id": "NCT03685708",
      "title": "HEPLISAV-B Hepatitis B Vaccine in Chronic Lymphocytic Leukemia (CLL) and CLL Treated With Bruton's-Tyrosine Kinase Inhibitor (BTK-I)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis",
        "Safety and Tolerability"
      ],
      "interventions": [
        {
          "name": "HEPLISAV-B",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 78,
      "start_date": "2018-12-07",
      "completion_date": "2020-12-16",
      "has_results": true,
      "last_update_posted_date": "2022-02-08",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03685708"
    },
    {
      "nct_id": "NCT00133445",
      "title": "Pentavalent DTaP-Hep B-IPV",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Diphtheria",
        "Hepatitis B",
        "Poliomyelitis",
        "Pertussis",
        "Tetanus"
      ],
      "interventions": [
        {
          "name": "DTaP-Hep B-IPV Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Monovalent Hep B Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "5 Days",
        "sex": "ALL",
        "summary": "Up to 5 Days"
      },
      "enrollment_count": 5,
      "start_date": "2005-12",
      "completion_date": "2006-08",
      "has_results": false,
      "last_update_posted_date": "2011-11-07",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 1,
      "location_summary": "Torrance, California",
      "locations": [
        {
          "city": "Torrance",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00133445"
    },
    {
      "nct_id": "NCT00107042",
      "title": "Effectiveness of Two Hepatitis B Vaccines in HIV-negative Youths",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Recombivax",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Twinrix",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "12 Years to 17 Years"
      },
      "enrollment_count": 123,
      "start_date": "2004-02",
      "completion_date": "2008-07",
      "has_results": true,
      "last_update_posted_date": "2017-03-29",
      "last_synced_at": "2026-09-28T20:15:28.388Z",
      "location_count": 10,
      "location_summary": "Los Angeles, California • San Diego, California • San Francisco, California + 7 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00107042"
    }
  ]
}