{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vaccine+placebo&page=2",
    "query": {
      "intervention": "Vaccine placebo",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 984,
    "total_pages": 99,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vaccine+placebo&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vaccine+placebo&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-02T23:42:27.219Z",
  "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": "NCT00480155",
      "title": "A Study to Evaluate the Safety of a Monovalent Vaccine in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Frozen FluMist®",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "MedImmune LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 300,
      "start_date": "2007-05",
      "completion_date": "2007-12",
      "has_results": false,
      "last_update_posted_date": "2008-12-22",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 3,
      "location_summary": "Daytona Beach, Florida • Portland, Oregon • Austin, Texas",
      "locations": [
        {
          "city": "Daytona Beach",
          "state": "Florida"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00480155"
    },
    {
      "nct_id": "NCT00754455",
      "title": "Evaluate the Safety and Immunogenicity of a Seasonal Influenza VLP Vaccine (Recombinant) in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Influenza VLP Vaccine (recombinant)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novavax",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 317,
      "start_date": "2008-09",
      "completion_date": "2009-03",
      "has_results": false,
      "last_update_posted_date": "2013-07-18",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 4,
      "location_summary": "Pembroke Pines, Florida • Kansas City, Missouri • Warwick, Rhode Island + 1 more",
      "locations": [
        {
          "city": "Pembroke Pines",
          "state": "Florida"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        },
        {
          "city": "Warwick",
          "state": "Rhode Island"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00754455"
    },
    {
      "nct_id": "NCT01164514",
      "title": "Detoxified J5 Core Glycolipid/ Group B Meningococcal Outer Membrane Protein Vaccine for Gram-negative Bacterial Sepsis Administered With and Without Synthetic CPG Oligodeoxynucleotide 7909 Adjuvant",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Bacterial Sepsis"
      ],
      "interventions": [
        {
          "name": "CPG 7909",
          "type": "BIOLOGICAL"
        },
        {
          "name": "J5-OMP 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": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 20,
      "start_date": "2011-11",
      "completion_date": "2013-02",
      "has_results": false,
      "last_update_posted_date": "2014-01-31",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01164514"
    },
    {
      "nct_id": "NCT02052726",
      "title": "A Study To Investigate A Clostridium Difficile Vaccine In Healthy Adults Aged 50 To 85 Years, Who Will Each Receive 3 Doses Of Vaccine.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Clostridium Difficile"
      ],
      "interventions": [
        {
          "name": "C. difficile vaccine with adjuvant",
          "type": "BIOLOGICAL"
        },
        {
          "name": "placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "50 Years to 85 Years"
      },
      "enrollment_count": 184,
      "start_date": "2014-01-22",
      "completion_date": "2015-05-05",
      "has_results": false,
      "last_update_posted_date": "2018-12-04",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 6,
      "location_summary": "Overland Park, Kansas • Cary, North Carolina • Raleigh, North Carolina + 2 more",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Cary",
          "state": "North Carolina"
        },
        {
          "city": "Raleigh",
          "state": "North Carolina"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02052726"
    },
    {
      "nct_id": "NCT00326443",
      "title": "CVD 909 Vi Prime Boost Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Typhoid Fever"
      ],
      "interventions": [
        {
          "name": "CVD 909",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Vi Polysaccharide",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 21,
      "start_date": "2006-02",
      "completion_date": "2008-08",
      "has_results": false,
      "last_update_posted_date": "2014-05-09",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00326443"
    },
    {
      "nct_id": "NCT01489527",
      "title": "Preparedness Study - HPV Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sexual Transmission of Infection"
      ],
      "interventions": [
        {
          "name": "Gardasil Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "24 Years",
        "sex": "FEMALE",
        "summary": "16 Years to 24 Years · Female only"
      },
      "enrollment_count": 406,
      "start_date": "2012-09",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2015-02-06",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01489527"
    },
    {
      "nct_id": "NCT06866405",
      "title": "A Phase 3 Study of Revaccination in Subsequent Pregnancies With Bivalent RSV Vaccine and Duration of Protection of a Single Dose",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "RSV Infection"
      ],
      "interventions": [
        {
          "name": "RSVpreF",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "0 Years and older"
      },
      "enrollment_count": 550,
      "start_date": "2025-04-16",
      "completion_date": "2028-02-24",
      "has_results": false,
      "last_update_posted_date": "2026-09-24",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 80,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 29 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06866405"
    },
    {
      "nct_id": "NCT07158905",
      "title": "AV-1980R (Tau Vaccine) in Preclinical Alzheimer's Disease (TAURUS-1980)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Alzheimer Disease",
        "Preclinical Alzheimer's Disease"
      ],
      "interventions": [
        {
          "name": "AV-1980R 20 µg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "AV-1980R 60 µg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "AV-1980R 180 µg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Institute for Molecular Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "65 Years to 80 Years"
      },
      "enrollment_count": 48,
      "start_date": "2026-06-23",
      "completion_date": "2029-10-15",
      "has_results": false,
      "last_update_posted_date": "2026-08-21",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 6,
      "location_summary": "Boca Raton, Florida • Miami Lakes, Florida • Stuart, Florida + 3 more",
      "locations": [
        {
          "city": "Boca Raton",
          "state": "Florida"
        },
        {
          "city": "Miami Lakes",
          "state": "Florida"
        },
        {
          "city": "Stuart",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Wellington",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07158905"
    },
    {
      "nct_id": "NCT00000829",
      "title": "A Double-Blind Placebo-Controlled Trial of the Safety and Immunogenicity of a Seven Valent Pneumococcal Conjugate Vaccine in Presumed HIV-Infected Infants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections",
        "Pneumococcal Infections"
      ],
      "interventions": [
        {
          "name": "Pneumococcal Vaccine, Polyvalent (23-valent)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pneumococcal Conjugate Vaccine, Heptavalent",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Months",
        "maximum_age": "6 Months",
        "sex": "ALL",
        "summary": "2 Months to 6 Months"
      },
      "enrollment_count": 60,
      "start_date": null,
      "completion_date": "1999-10",
      "has_results": false,
      "last_update_posted_date": "2021-10-28",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 31,
      "location_summary": "Los Angeles, California • Oakland, California • San Diego, California + 21 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00000829"
    },
    {
      "nct_id": "NCT03387137",
      "title": "Evaluating the Infectivity, Safety, and Immunogenicity of a Respiratory Syncytial Virus Vaccine (RSV 6120/∆NS2/1030s) in RSV-Seropositive Children and RSV-Seronegative Infants and Children",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "RSV Infection"
      ],
      "interventions": [
        {
          "name": "RSV 6120/∆NS2/1030s",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "60 Months",
        "sex": "ALL",
        "summary": "6 Months to 60 Months"
      },
      "enrollment_count": 45,
      "start_date": "2017-10-13",
      "completion_date": "2021-05-31",
      "has_results": true,
      "last_update_posted_date": "2024-12-11",
      "last_synced_at": "2026-10-02T23:42:27.219Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03387137"
    }
  ]
}