{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tdap&page=3",
    "query": {
      "intervention": "Tdap",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 98,
    "total_pages": 10,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tdap&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tdap&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-19T13:06:12.187Z",
  "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": "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": "2026-10-19T13:06:12.187Z",
      "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": "NCT03562377",
      "title": "Vaccine Responses in Tralokinumab-Treated Atopic Dermatitis - ECZTRA 5 (ECZema TRAlokinumab Trial No. 5)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Atopic Dermatitis"
      ],
      "interventions": [
        {
          "name": "Tralokinumab",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Tdap vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Meningococcal vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "LEO Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "54 Years",
        "sex": "ALL",
        "summary": "18 Years to 54 Years"
      },
      "enrollment_count": 215,
      "start_date": "2018-07-13",
      "completion_date": "2019-11-22",
      "has_results": true,
      "last_update_posted_date": "2025-03-11",
      "last_synced_at": "2026-10-19T13:06:12.187Z",
      "location_count": 39,
      "location_summary": "Fort Smith, Arkansas • Bakersfield, California • Beverly Hills, California + 33 more",
      "locations": [
        {
          "city": "Fort Smith",
          "state": "Arkansas"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03562377"
    },
    {
      "nct_id": "NCT01000311",
      "title": "A Study to Evaluate the Safety and Immunogenicity of 4 Doses of MenACWY Conjugate Vaccine, Administered Concomitantly With Routine Vaccines, Among Infants Aged 2 Months",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Meningococcal Disease"
      ],
      "interventions": [
        {
          "name": "MenACWY-CRM",
          "type": "BIOLOGICAL"
        },
        {
          "name": "DTaP-IPV/Hib",
          "type": "BIOLOGICAL"
        },
        {
          "name": "HBV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "PCV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MMR",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novartis Vaccines",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Days",
        "maximum_age": "89 Days",
        "sex": "ALL",
        "summary": "55 Days to 89 Days"
      },
      "enrollment_count": 529,
      "start_date": "2009-11",
      "completion_date": "2011-11",
      "has_results": true,
      "last_update_posted_date": "2014-04-21",
      "last_synced_at": "2026-10-19T13:06:12.187Z",
      "location_count": 42,
      "location_summary": "Birmingham, Alabama • Fayetteville, Arkansas • Jonesboro, Arkansas + 33 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Canoga Park",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01000311"
    },
    {
      "nct_id": "NCT01390363",
      "title": "Study of Adolescent Immunization Recall Systems",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Immunization",
        "Reminder Systems"
      ],
      "interventions": [
        {
          "name": "Parent Only Phone Call",
          "type": "OTHER"
        },
        {
          "name": "Parent and Adolescent Phone Call",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "17 Years",
        "sex": "FEMALE",
        "summary": "13 Years to 17 Years · Female only"
      },
      "enrollment_count": 420,
      "start_date": "2010-05-01",
      "completion_date": "2011-07-31",
      "has_results": false,
      "last_update_posted_date": "2017-04-13",
      "last_synced_at": "2026-10-19T13:06:12.187Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01390363"
    },
    {
      "nct_id": "NCT03650114",
      "title": "Long-term Safety, Tolerability and Effectiveness Study of Ofatumumab in Patients With Relapsing MS",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Relapsing Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Ofatumumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Tetanus toxoid (TT) containing vaccine (Td, Tdap)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "13-valent pneumococcal conjugate vaccine (13-PCV)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "23-valent pneumococcal polysaccharide vaccine (23-PPV)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Seasonal Quadrivalent influenza vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Keyhole limpet hemocyanin (KLH) neo-antigen",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 1882,
      "start_date": "2018-12-28",
      "completion_date": "2028-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-27",
      "last_synced_at": "2026-10-19T13:06:12.187Z",
      "location_count": 86,
      "location_summary": "Birmingham, Alabama • Cullman, Alabama • Phoenix, Arizona + 74 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Cullman",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03650114"
    },
    {
      "nct_id": "NCT00855855",
      "title": "Surveillance Program to Determine Product Specific Rates of Invasive Hib Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Haemophilus Infections",
        "Diphtheria",
        "Tetanus",
        "Polio",
        "Pertussis"
      ],
      "interventions": [
        {
          "name": "DTaP-IPV/Hib",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "59 Months",
        "sex": "ALL",
        "summary": "Up to 59 Months"
      },
      "enrollment_count": 20830,
      "start_date": "2009-02",
      "completion_date": "2014-12",
      "has_results": false,
      "last_update_posted_date": "2022-04-25",
      "last_synced_at": "2026-10-19T13:06:12.187Z",
      "location_count": 59,
      "location_summary": "Albany, California • Martinez, California • San Francisco, California + 56 more",
      "locations": [
        {
          "city": "Albany",
          "state": "California"
        },
        {
          "city": "Martinez",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Applewood",
          "state": "Colorado"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00855855"
    },
    {
      "nct_id": "NCT02209623",
      "title": "TDAP Safety in Pregnant Women",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pertussis"
      ],
      "interventions": [
        {
          "name": "TDAP",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Vanderbilt 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": 375,
      "start_date": "2014-05",
      "completion_date": "2017-12-18",
      "has_results": false,
      "last_update_posted_date": "2017-12-20",
      "last_synced_at": "2026-10-19T13:06:12.187Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina • Nashville, Tennessee",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02209623"
    },
    {
      "nct_id": "NCT06038617",
      "title": "Safety of Simultaneous mRNA COVID-19 Vaccine With Other Childhood Vaccines in Young Children",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Fever After Vaccination",
        "Fever",
        "Seizures Fever"
      ],
      "interventions": [
        {
          "name": "mRNA COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Routine Childhood Vaccinations",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "4 Years",
        "sex": "ALL",
        "summary": "6 Months to 4 Years"
      },
      "enrollment_count": 347,
      "start_date": "2023-10-30",
      "completion_date": "2025-07-25",
      "has_results": true,
      "last_update_posted_date": "2026-05-13",
      "last_synced_at": "2026-10-19T13:06:12.187Z",
      "location_count": 5,
      "location_summary": "Oakland, California • Atlanta, Georgia • New York, New York + 2 more",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06038617"
    },
    {
      "nct_id": "NCT00489970",
      "title": "Persistence Study of GSK Biologicals' Tdap Vaccine 1, 3, 5 and 9 Years Following Administration as an Initial Single Dose in Healthy Young Adults and to Evaluate the Immunogenicity and Safety of Boostrix as a Second Dose of Tdap, When Administered at Year 9",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Acellular Pertussis",
        "Tetanus",
        "Diphtheria"
      ],
      "interventions": [
        {
          "name": "Taking of blood samples",
          "type": "PROCEDURE"
        },
        {
          "name": "Boostrix",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Adacel",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "28 Years",
        "maximum_age": "73 Years",
        "sex": "ALL",
        "summary": "28 Years to 73 Years"
      },
      "enrollment_count": 1954,
      "start_date": "2007-06-01",
      "completion_date": "2016-03-01",
      "has_results": true,
      "last_update_posted_date": "2020-05-01",
      "last_synced_at": "2026-10-19T13:06:12.187Z",
      "location_count": 37,
      "location_summary": "Huntsville, Alabama • Chandler, Arizona • Mesa, Arizona + 31 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00489970"
    },
    {
      "nct_id": "NCT00109330",
      "title": "A Combined Tdap Vaccine Used As A Booster Compared To Licensed Td Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Diphtheria",
        "Tetanus",
        "Acellular Pertussis"
      ],
      "interventions": [
        {
          "name": "Combined diphtheria, tetanus, acellular pertussis vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "10 Years to 18 Years"
      },
      "enrollment_count": 4116,
      "start_date": "2002-11",
      "completion_date": "2004-04",
      "has_results": false,
      "last_update_posted_date": "2016-09-09",
      "last_synced_at": "2026-10-19T13:06:12.187Z",
      "location_count": 44,
      "location_summary": "Mesa, Arizona • Tempe, Arizona • Jonesboro, Arkansas + 39 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Escondido",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00109330"
    }
  ]
}