{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smallpox+Vaccine",
    "query": {
      "condition": "Smallpox Vaccine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 42,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smallpox+Vaccine&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T01:37:44.714Z",
  "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": "NCT00389103",
      "title": "Safety Study of MVA Smallpox Vaccine in Subjects With a History of Atopic Dermatitis (AD)",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Smallpox",
        "Atopic Dermatitis"
      ],
      "interventions": [
        {
          "name": "MVA (smallpox vaccine)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 0,
      "start_date": "2006-10",
      "completion_date": "2007-01",
      "has_results": false,
      "last_update_posted_date": "2014-01-22",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 3,
      "location_summary": "Albuquerque, New Mexico • Portland, Oregon • Austin, Texas",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00389103"
    },
    {
      "nct_id": "NCT00053508",
      "title": "Dose Safety, Tolerability, and Immunogenicity of a New Smallpox Vaccine in Adults Without Previous Smallpox Vaccination",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smallpox"
      ],
      "interventions": [
        {
          "name": "ACAM1000",
          "type": "BIOLOGICAL"
        },
        {
          "name": "vaccinia virus (calf lymph) smallpox vaccine: Dryvax",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "29 Years",
        "sex": "ALL",
        "summary": "18 Years to 29 Years"
      },
      "enrollment_count": 274,
      "start_date": "2002-09",
      "completion_date": "2003-09",
      "has_results": false,
      "last_update_posted_date": "2014-01-22",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 3,
      "location_summary": "Orlando, Florida • Rochester, Minnesota • Cincinnati, Ohio",
      "locations": [
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00053508"
    },
    {
      "nct_id": "NCT00053742",
      "title": "Phase I/II Trial of Modified Vaccinia Virus Ankara (MVA) Vaccine Against Smallpox",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Modified Vaccinia Virus Ankara TBC-MVA",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 80,
      "start_date": "2003-02",
      "completion_date": "2006-03",
      "has_results": false,
      "last_update_posted_date": "2008-03-04",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00053742"
    },
    {
      "nct_id": "NCT00042094",
      "title": "Study of Reactogenicity, Safety, Immunogenicity, and Pock Lesion Formation of a Cell-Cultured Smallpox Vaccine Compared to Dryvax®",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Smallpox"
      ],
      "interventions": [
        {
          "name": "Cell-Cultured Smallpox Vaccine compared to Dryvax®",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "DynPort Vaccine Company LLC, A GDIT Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 350,
      "start_date": "2002-03",
      "completion_date": "2003-03",
      "has_results": false,
      "last_update_posted_date": "2011-06-30",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00042094"
    },
    {
      "nct_id": "NCT00437021",
      "title": "MVA Post-Event: Administration Timing and Boost Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Smallpox"
      ],
      "interventions": [
        {
          "name": "Live vaccinia virus vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MVA Smallpox Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "38 Years",
        "sex": "ALL",
        "summary": "18 Years to 38 Years"
      },
      "enrollment_count": 226,
      "start_date": "2007-04-16",
      "completion_date": "2009-04-21",
      "has_results": true,
      "last_update_posted_date": "2025-09-19",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 7,
      "location_summary": "Iowa City, Iowa • Baltimore, Maryland • St Louis, Missouri + 4 more",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00437021"
    },
    {
      "nct_id": "NCT00282581",
      "title": "Safety Study of MVA Smallpox Vaccine in HIV-positive Subjects Who Are Vaccinia Naive",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections",
        "Smallpox"
      ],
      "interventions": [
        {
          "name": "MVA Smallpox Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 2,
      "start_date": "2006-10",
      "completion_date": "2007-07",
      "has_results": false,
      "last_update_posted_date": "2014-01-22",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 6,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • San Francisco, California + 2 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00282581"
    },
    {
      "nct_id": "NCT00050505",
      "title": "Expanded Dryvax Dilution Study in Previously Vaccinated Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smallpox"
      ],
      "interventions": [
        {
          "name": "Live vaccinia virus vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "32 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "32 Years to 70 Years"
      },
      "enrollment_count": 927,
      "start_date": "2002-10",
      "completion_date": "2003-12",
      "has_results": false,
      "last_update_posted_date": "2014-12-05",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 7,
      "location_summary": "Oakland, California • Stanford, California • Torrance, California + 4 more",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00050505"
    },
    {
      "nct_id": "NCT00133575",
      "title": "ACAM 3000 MVA at Harvard Medical School",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Smallpox"
      ],
      "interventions": [
        {
          "name": "MVA Smallpox Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Live vaccinia virus vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "38 Years",
        "sex": "ALL",
        "summary": "18 Years to 38 Years"
      },
      "enrollment_count": 72,
      "start_date": "2005-10",
      "completion_date": "2008-04",
      "has_results": true,
      "last_update_posted_date": "2015-01-05",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00133575"
    },
    {
      "nct_id": "NCT03699124",
      "title": "Freeze-Dried MVA-BN® Lot Consistency Smallpox Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Smallpox"
      ],
      "interventions": [
        {
          "name": "FD MVA-BN",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Bavarian Nordic",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 1129,
      "start_date": "2019-06-19",
      "completion_date": "2020-06-22",
      "has_results": true,
      "last_update_posted_date": "2021-05-27",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 12,
      "location_summary": "Birmingham, Alabama • Melbourne, Florida • Peoria, Illinois + 8 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Melbourne",
          "state": "Florida"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03699124"
    },
    {
      "nct_id": "NCT00053482",
      "title": "Dose Study of ACAM2000 Smallpox Vaccine in Previously Vaccinated Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smallpox"
      ],
      "interventions": [
        {
          "name": "ACAM2000 Smallpox Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Vaccinia virus (calf lymph) smallpox vaccine: Dryvax®",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Emergent BioSolutions",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "28 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "28 Years and older"
      },
      "enrollment_count": 357,
      "start_date": "2003-01",
      "completion_date": "2003-10",
      "has_results": true,
      "last_update_posted_date": "2024-03-18",
      "last_synced_at": "2026-07-23T01:37:44.714Z",
      "location_count": 3,
      "location_summary": "Lenexa, Kansas • Springfield, Missouri • Pawtucket, Rhode Island",
      "locations": [
        {
          "city": "Lenexa",
          "state": "Kansas"
        },
        {
          "city": "Springfield",
          "state": "Missouri"
        },
        {
          "city": "Pawtucket",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00053482"
    }
  ]
}