{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=hepatitis+A+vaccine&page=2",
    "query": {
      "intervention": "hepatitis A vaccine",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 136,
    "total_pages": 14,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=hepatitis+A+vaccine&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=hepatitis+A+vaccine&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-03T18:48:40.252Z",
  "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": "NCT06097312",
      "title": "PREHEVBRIO Pregnancy Outcomes Registry",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vaccine Exposure During Pregnancy"
      ],
      "interventions": [
        {
          "name": "Data collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "VBI Vaccines Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 0,
      "start_date": "2023-11-30",
      "completion_date": "2032-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-11",
      "last_synced_at": "2026-10-03T18:48:40.252Z",
      "location_count": 1,
      "location_summary": "Overland Park, Kansas",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06097312"
    },
    {
      "nct_id": "NCT06855160",
      "title": "A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine and a Marketed Measles, Mumps and Rubella Vaccine When Administered as Intramuscular Injection to Healthy Children 12 to 15 Months of Age",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chickenpox"
      ],
      "interventions": [
        {
          "name": "Candidate varicella vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Marketed varicella vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MMR vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Hepatitis A vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PCV (pneumococcal conjugate vaccine) 13",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PCV 20",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Vaxneuvance",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Months",
        "maximum_age": "15 Months",
        "sex": "ALL",
        "summary": "12 Months to 15 Months"
      },
      "enrollment_count": 911,
      "start_date": "2025-04-17",
      "completion_date": "2027-02-02",
      "has_results": false,
      "last_update_posted_date": "2026-05-29",
      "last_synced_at": "2026-10-03T18:48:40.252Z",
      "location_count": 13,
      "location_summary": "Tucson, Arizona • Huntington Park, California • Sherman Oaks, California + 10 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Huntington Park",
          "state": "California"
        },
        {
          "city": "Sherman Oaks",
          "state": "California"
        },
        {
          "city": "Coral Gables",
          "state": "Florida"
        },
        {
          "city": "Miami Lakes",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06855160"
    },
    {
      "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": "2026-10-03T18:48:40.252Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04162223"
    },
    {
      "nct_id": "NCT00201448",
      "title": "Evaluation of the Safety and Immune Responses of the Towne Strain of CMV in Seronegative Women",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Cytomegalovirus Infections"
      ],
      "interventions": [
        {
          "name": "Hepatitis A Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Towne CMV Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 82,
      "start_date": "2007-06",
      "completion_date": "2009-10",
      "has_results": true,
      "last_update_posted_date": "2016-05-30",
      "last_synced_at": "2026-10-03T18:48:40.252Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00201448"
    },
    {
      "nct_id": "NCT01544764",
      "title": "Examining Adolescent Assessment, Feedback, Incentive, and Exchange (AFIX) in North Carolina",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Adolescent Health Services",
        "Immunization"
      ],
      "interventions": [
        {
          "name": "Assessment , Feedback, Incentives, and eXchange Program",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 91,
      "start_date": "2011-04",
      "completion_date": "2012-12",
      "has_results": false,
      "last_update_posted_date": "2013-12-18",
      "last_synced_at": "2026-10-03T18:48:40.252Z",
      "location_count": 2,
      "location_summary": "Chapel Hill, North Carolina • Raleigh, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Raleigh",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01544764"
    },
    {
      "nct_id": "NCT00373958",
      "title": "Study Comparing 13-valent Pneumococcal Conjugate Vaccine With 7-valent Pneumococcal Conjugate Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Vaccines, Pneumococcal"
      ],
      "interventions": [
        {
          "name": "13 valent pneumococcal conjugate vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "7vPnc pneumococcal conjugate vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "42 Days",
        "maximum_age": "98 Days",
        "sex": "ALL",
        "summary": "42 Days to 98 Days"
      },
      "enrollment_count": 666,
      "start_date": "2006-09",
      "completion_date": "2008-06",
      "has_results": true,
      "last_update_posted_date": "2013-02-21",
      "last_synced_at": "2026-10-03T18:48:40.252Z",
      "location_count": 37,
      "location_summary": "Fayetteville, Arkansas • Jonesboro, Arkansas • Little Rock, Arkansas + 31 more",
      "locations": [
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Downey",
          "state": "California"
        },
        {
          "city": "Fontana",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00373958"
    },
    {
      "nct_id": "NCT04843852",
      "title": "TLR-9 Adjuvanted Vaccination for Chronic Hepatitis B",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hepatitis B",
        "Chronic Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Hepatitis B Vaccine Recombinant, Adjuvanted Intramuscular Solution [HEPLISAV-B]",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "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": "2025-10-16",
      "completion_date": "2027-04-01",
      "has_results": false,
      "last_update_posted_date": "2025-10-20",
      "last_synced_at": "2026-10-03T18:48:40.252Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04843852"
    },
    {
      "nct_id": "NCT02431312",
      "title": "Phase I Study of INO-1800 With or Without INO-9112 + EP in Chronic Hepatitis B Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hepatitis B"
      ],
      "interventions": [
        {
          "name": "INO-1800",
          "type": "BIOLOGICAL"
        },
        {
          "name": "INO-9112",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Nucleos(t)ide Analogue Treatment",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Inovio Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 90,
      "start_date": "2015-01-12",
      "completion_date": "2018-05-22",
      "has_results": false,
      "last_update_posted_date": "2019-10-15",
      "last_synced_at": "2026-10-03T18:48:40.252Z",
      "location_count": 7,
      "location_summary": "San Diego, California • Miami, Florida • Manhasset, New York + 4 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Manhasset",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02431312"
    },
    {
      "nct_id": "NCT01627340",
      "title": "Immunogenicity and Safety Study of GlaxoSmithKline (GSK) Biologicals' Engerix™-B in Adults With or Without Type 2 Diabetes Mellitus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Engerix™-B vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "20 Years and older"
      },
      "enrollment_count": 667,
      "start_date": "2012-07-24",
      "completion_date": "2013-12-18",
      "has_results": true,
      "last_update_posted_date": "2018-07-31",
      "last_synced_at": "2026-10-03T18:48:40.252Z",
      "location_count": 10,
      "location_summary": "Huntsville, Alabama • Stockbridge, Georgia • Boise, Idaho + 7 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Stockbridge",
          "state": "Georgia"
        },
        {
          "city": "Boise",
          "state": "Idaho"
        },
        {
          "city": "Mishawaka",
          "state": "Indiana"
        },
        {
          "city": "Wichita",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01627340"
    },
    {
      "nct_id": "NCT00139113",
      "title": "Immunogenicity Study of an Inactivated Hepatitis A Vaccine in Infants and Young Children",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hepatitis A"
      ],
      "interventions": [
        {
          "name": "hepatitis A vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Centers for Disease Control and Prevention",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "6 Months to 25 Years"
      },
      "enrollment_count": 248,
      "start_date": "1996-09",
      "completion_date": "2001-06",
      "has_results": false,
      "last_update_posted_date": "2024-08-20",
      "last_synced_at": "2026-10-03T18:48:40.252Z",
      "location_count": 2,
      "location_summary": "Anchorage, Alaska",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00139113"
    }
  ]
}