{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Hepatitis+B+Immunisation", "query": { "condition": "Hepatitis B Immunisation" }, "page_size": 10 }, "pagination": { "page": 1, "page_size": 10, "total_count": 24, "total_pages": 3, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Hepatitis+B+Immunisation&page=2&page_size=10", "previous_page_url": null }, "source": "remote", "last_synced_at": "2026-05-22T07:02:40.920Z", "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": "NCT00142753", "title": "Immunologic Memory (Supp. of ATN 024)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "HIV Infections" ], "interventions": [ { "name": "Engerix B", "type": "BIOLOGICAL" }, { "name": "Twinrix for ATN 024", "type": "BIOLOGICAL" }, { "name": "Recombivax", "type": "BIOLOGICAL" }, { "name": "Twinrix for ATN 025", "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": "25 Years", "sex": "ALL", "summary": "12 Years to 25 Years" }, "enrollment_count": 95, "start_date": "2005-08", "completion_date": "2007-11", "has_results": false, "last_update_posted_date": "2017-02-28", "last_synced_at": "2026-05-22T07:02:40.920Z", "location_count": 4, "location_summary": "Los Angeles, California • San Franciso, California • Washington D.C., District of Columbia + 1 more", "locations": [ { "city": "Los Angeles", "state": "California" }, { "city": "San Franciso", "state": "California" }, { "city": "Washington D.C.", "state": "District of Columbia" }, { "city": "New Orleans", "state": "Louisiana" } ], "official_url": "https://clinicaltrials.gov/study/NCT00142753" }, { "nct_id": "NCT00739752", "title": "Interventions to Increase HBV Vaccinations in Sexually Transmitted Disease (STD) Clinics", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Hepatitis B Virus" ], "interventions": [ { "name": "Non-Framed-Offered", "type": "BEHAVIORAL" }, { "name": "Non-Framed-Recommended", "type": "BEHAVIORAL" }, { "name": "Gain-Framed-Offered", "type": "BEHAVIORAL" }, { "name": "Gain-Framed-Recommended", "type": "BEHAVIORAL" }, { "name": "Loss-Framed-Offered", "type": "BEHAVIORAL" }, { "name": "Loss-Framed-Recommended", "type": "BEHAVIORAL" } ], "intervention_types": [ "BEHAVIORAL" ], "sponsor": "Indiana University", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 1747, "start_date": "2003-06", "completion_date": "2007-10", "has_results": true, "last_update_posted_date": "2018-11-09", "last_synced_at": "2026-05-22T07:02:40.920Z", "location_count": 2, "location_summary": "Chicago, Illinois • Indianapolis, Indiana", "locations": [ { "city": "Chicago", "state": "Illinois" }, { "city": "Indianapolis", "state": "Indiana" } ], "official_url": "https://clinicaltrials.gov/study/NCT00739752" }, { "nct_id": "NCT04398706", "title": "Study of a Pneumococcal Conjugate Vaccine When Administered Concomitantly With Routine Pediatric Vaccines in Healthy Toddlers and Infants", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Pneumococcal Immunisation", "Diphtheria Immunisation", "Tetanus Immunisation", "Pertussis Immunisation", "Hepatitis B Immunisation", "Haemophilus Influenzae Type b Immunisation", "Polio Immunisation", "Measles Immunisation", "Rubella Immunisation", "Varicella Immunisation", "Mumps Immunisation" ], "interventions": [ { "name": "Pneumococcal Conjugate Vaccine formulation 1", "type": "BIOLOGICAL" }, { "name": "Pneumococcal Conjugate Vaccine formulation 2", "type": "BIOLOGICAL" }, { "name": "Pneumococcal Conjugate Vaccine formulation 3", "type": "BIOLOGICAL" }, { "name": "Varicella Virus Vaccine Live", "type": "BIOLOGICAL" }, { "name": "Measles, Mumps, and Rubella Virus Vaccine Live", "type": "BIOLOGICAL" }, { "name": "Pneumococcal 13-valent Conjugate Vaccine [Diphtheria CRM197 Protein]", "type": "BIOLOGICAL" }, { "name": "Diphtheria and Tetanus Toxoids and Acellular Pertussis Adsorbed, Inactivated Poliovirus and Haemophilus b Conjugate (Tetanus Toxoid Conjugate)", "type": "BIOLOGICAL" }, { "name": "Rotavirus Vaccine, Live, Oral, Pentavalent", "type": "BIOLOGICAL" }, { "name": "Hepatitis B Vaccine* [Recombinant] *as applicable", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Sanofi Pasteur, a Sanofi Company", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "42 Days", "maximum_age": "15 Months", "sex": "ALL", "summary": "42 Days to 15 Months" }, "enrollment_count": 852, "start_date": "2020-05-22", "completion_date": "2023-08-10", "has_results": true, "last_update_posted_date": "2025-09-08", "last_synced_at": "2026-05-22T07:02:40.920Z", "location_count": 49, "location_summary": "Jonesboro, Arkansas • Bellflower, California • Huntington Park, California + 41 more", "locations": [ { "city": "Jonesboro", "state": "Arkansas" }, { "city": "Bellflower", "state": "California" }, { "city": "Huntington Park", "state": "California" }, { "city": "Huntington Park", "state": "California" }, { "city": "Los Angeles", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT04398706" }, { "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": "2026-05-22T07:02:40.920Z", "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" }, { "nct_id": "NCT00106964", "title": "Comparison of Three Hepatitis B Vaccination Regimens in HIV-Positive Youth", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "HIV Infection", "Hepatitis B" ], "interventions": [ { "name": "Engerix-B 20 mcg", "type": "BIOLOGICAL" }, { "name": "Engerix-B 40 mcg", "type": "BIOLOGICAL" }, { "name": "Twinrix 720 EIA HAV Ag plus 20 mcg HBsAg", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "University of North Carolina, Chapel Hill", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "12 Years", "maximum_age": "24 Years", "sex": "ALL", "summary": "12 Years to 24 Years" }, "enrollment_count": 371, "start_date": "2004-01", "completion_date": "2009-06", "has_results": true, "last_update_posted_date": "2017-03-29", "last_synced_at": "2026-05-22T07:02:40.920Z", "location_count": 4, "location_summary": "Los Angeles, California • San Francisco, California • Washington D.C., District of Columbia + 1 more", "locations": [ { "city": "Los Angeles", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "Washington D.C.", "state": "District of Columbia" }, { "city": "New Orleans", "state": "Louisiana" } ], "official_url": "https://clinicaltrials.gov/study/NCT00106964" }, { "nct_id": "NCT01259453", "title": "Hepatitis B Vaccination Through Syringe Exchange Programs: A Randomized, Controlled Trial of Vaccination Schedules", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Hepatitis B" ], "interventions": [ { "name": "Vaccination to prevent hepatitis B virus infection", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Yale University", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 595, "start_date": "2003-05", "completion_date": "2006-08", "has_results": false, "last_update_posted_date": "2010-12-14", "last_synced_at": "2026-05-22T07:02:40.920Z", "location_count": 3, "location_summary": "Hartford, Connecticut • Chicago, Illinois • Cleveland, Ohio", "locations": [ { "city": "Hartford", "state": "Connecticut" }, { "city": "Chicago", "state": "Illinois" }, { "city": "Cleveland", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT01259453" }, { "nct_id": "NCT01282762", "title": "Long-Term Study on Safety and Immunogenicity of HEPLISAV™ and Engerix-B® in Adults With Chronic Kidney Disease", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Chronic Kidney Disease" ], "interventions": [ { "name": "HEPLISAV", "type": "BIOLOGICAL" }, { "name": "Engerix-B", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Dynavax Technologies Corporation", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "18 Years to 75 Years" }, "enrollment_count": 147, "start_date": "2010-12", "completion_date": "2013-08", "has_results": false, "last_update_posted_date": "2019-03-20", "last_synced_at": "2026-05-22T07:02:40.920Z", "location_count": 1, "location_summary": "Norfolk, Virginia", "locations": [ { "city": "Norfolk", "state": "Virginia" } ], "official_url": "https://clinicaltrials.gov/study/NCT01282762" }, { "nct_id": "NCT04193189", "title": "B-Enhancement of HBV Vaccination in Persons Living With HIV (BEe-HIVe): Evaluation of HEPLISAV-B", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "HIV Infection", "Hepatitis B" ], "interventions": [ { "name": "HEPLISAV-B", "type": "BIOLOGICAL" }, { "name": "ENGERIX-B", "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": "70 Years", "sex": "ALL", "summary": "18 Years to 70 Years" }, "enrollment_count": 638, "start_date": "2020-12-14", "completion_date": "2024-08-13", "has_results": true, "last_update_posted_date": "2025-07-20", "last_synced_at": "2026-05-22T07:02:40.920Z", "location_count": 28, "location_summary": "Birmingham, Alabama • Los Angeles, California • San Diego, California + 22 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Los Angeles", "state": "California" }, { "city": "San Diego", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "Torrance", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT04193189" }, { "nct_id": "NCT01182311", "title": "Duration of Long-term Immunity After Hepatitis B Virus Immunization", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Hepatitis B" ], "interventions": [], "intervention_types": [], "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 205, "start_date": "2010-09-08", "completion_date": "2020-12-09", "has_results": false, "last_update_posted_date": "2020-12-11", "last_synced_at": "2026-05-22T07:02:40.920Z", "location_count": 1, "location_summary": "Bethesda, Maryland", "locations": [ { "city": "Bethesda", "state": "Maryland" } ], "official_url": "https://clinicaltrials.gov/study/NCT01182311" }, { "nct_id": "NCT00013871", "title": "Pneumococcal Vaccine and Routine Pediatric Immunizations in HIV-Infected Children Receiving Anti-HIV Drugs", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "HIV Infections", "Hepatitis B", "Measles", "Pneumococcal Infections", "Pertussis" ], "interventions": [ { "name": "Diphtheria & Tetanus Toxoids & Acellular Pertussis Vaccine Adsorbed", "type": "BIOLOGICAL" }, { "name": "Measles-Mumps-Rubella Vaccine (Live)", "type": "BIOLOGICAL" }, { "name": "Pneumococcal Vaccine, Polyvalent (23-valent)", "type": "BIOLOGICAL" }, { "name": "Pneumococcal Conjugate Vaccine, Heptavalent", "type": "BIOLOGICAL" }, { "name": "Hepatitis B Vaccine (Recombinant)", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "2 Years", "maximum_age": "18 Years", "sex": "ALL", "summary": "2 Years to 18 Years" }, "enrollment_count": 300, "start_date": null, "completion_date": "2004-11", "has_results": false, "last_update_posted_date": "2021-11-01", "last_synced_at": "2026-05-22T07:02:40.920Z", "location_count": 38, "location_summary": "Birmingham, Alabama • Long Beach, California • Los Angeles, California + 26 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Long Beach", "state": "California" }, { "city": "Los Angeles", "state": "California" }, { "city": "Oakland", "state": "California" }, { "city": "San Diego", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT00013871" } ] }