{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+booster&page=2",
    "query": {
      "intervention": "Placebo booster",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+booster&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T21:02:27.813Z",
  "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": "NCT03642106",
      "title": "Unidos Against ATOD Use Intervention Trial",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance Use"
      ],
      "interventions": [
        {
          "name": "Unidos Se Puede",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Oklahoma State University",
      "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": 240,
      "start_date": "2020-01-01",
      "completion_date": "2023-08-31",
      "has_results": false,
      "last_update_posted_date": "2022-07-27",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 1,
      "location_summary": "Tulsa, Oklahoma",
      "locations": [
        {
          "city": "Tulsa",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03642106"
    },
    {
      "nct_id": "NCT05468736",
      "title": "Study to Evaluate Safety and Immunogenicity of COVID-19 Vaccine in Children 6 Months to < 12 Years",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "SARS-CoV-2 rS/Matrix-M1 Adjuvant (Initial Vaccination Period)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Novavax",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "6 Months to 11 Years"
      },
      "enrollment_count": 3600,
      "start_date": "2022-07-22",
      "completion_date": "2025-10-25",
      "has_results": false,
      "last_update_posted_date": "2026-05-22",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 47,
      "location_summary": "Little Rock, Arkansas • Anaheim, California • Bellflower, California + 41 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Bellflower",
          "state": "California"
        },
        {
          "city": "Fair Oaks",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05468736"
    },
    {
      "nct_id": "NCT04528719",
      "title": "A Dose Escalation Study to Evaluate Safety, Reactogenicity, and Immunogenicity of mRNA-1345 in Healthy Adults and in Children Who Are Respiratory Syncytial Virus (RSV)-Seropositive",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Respiratory Syncytial Virus"
      ],
      "interventions": [
        {
          "name": "mRNA-1345",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Months",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "12 Months to 79 Years"
      },
      "enrollment_count": 651,
      "start_date": "2020-09-30",
      "completion_date": "2024-07-18",
      "has_results": false,
      "last_update_posted_date": "2024-08-07",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 31,
      "location_summary": "La Mesa, California • West Hollywood, California • DeLand, Florida + 28 more",
      "locations": [
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "West Hollywood",
          "state": "California"
        },
        {
          "city": "DeLand",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "West Palm Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04528719"
    },
    {
      "nct_id": "NCT05397119",
      "title": "A Safety and Immunogenicity of Intranasal Nanoemulsion Adjuvanted Recombinant Pandemic Flu Vaccine in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza, Pandemic"
      ],
      "interventions": [
        {
          "name": "BW-1014: 25 µg rH5 in 20% NE - pipette - IN",
          "type": "BIOLOGICAL"
        },
        {
          "name": "BW-1014: 50 µg rH5 in 20% NE - pipette - IN",
          "type": "BIOLOGICAL"
        },
        {
          "name": "BW-1014: 100 µg rH5 in 20% NE - pipette - IN",
          "type": "BIOLOGICAL"
        },
        {
          "name": "rH5 (100 µg) control - pipette - IN",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Saline (Placebo) - pipette - IN",
          "type": "BIOLOGICAL"
        },
        {
          "name": "H5N1 IIV - IM",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "BlueWillow Biologics",
      "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": 40,
      "start_date": "2022-07-07",
      "completion_date": "2023-10-12",
      "has_results": true,
      "last_update_posted_date": "2026-07-30",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05397119"
    },
    {
      "nct_id": "NCT06134648",
      "title": "Study of a Respiratory Syncytial Virus/Human Metapneumovirus Vaccine Candidate",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infection",
        "Healthy Volunteers",
        "Human Metapneumovirus"
      ],
      "interventions": [
        {
          "name": "RSV/hMPV vaccine candidate Dose L",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSV/hMPV vaccine candidate Dose A",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSV/hMPV vaccine candidate Dose B",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 646,
      "start_date": "2023-11-01",
      "completion_date": "2026-02-27",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 10,
      "location_summary": "Los Alamitos, California • Los Angeles, California • Rolling Hills Estates, California + 7 more",
      "locations": [
        {
          "city": "Los Alamitos",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Rolling Hills Estates",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Oakbrook Terrace",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06134648"
    },
    {
      "nct_id": "NCT03300050",
      "title": "Safety and Immunogenicity of a Live-attenuated Universal Flu Vaccine Followed by an Inactivated Universal Flu Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Influenza",
        "Vaccine"
      ],
      "interventions": [
        {
          "name": "cH8/1N1 LAIV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "AS03-adjuvanted cH5/1N1 IIV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "cH5/1N1 IIV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "AS03-adjuvanted cH8/1N1 IIV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Normal saline",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Phosphate buffered saline (PBS)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "PATH",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 65,
      "start_date": "2017-10-10",
      "completion_date": "2019-08-09",
      "has_results": true,
      "last_update_posted_date": "2021-02-21",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina • Cincinnati, Ohio",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03300050"
    },
    {
      "nct_id": "NCT04825223",
      "title": "Study of a Novel Multicomponent Meningococcal Group B Vaccine When Given Alone or With Other Licensed Vaccines in Adults, Adolescents, Toddlers and Infants",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Meningococcal Immunisation",
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "Multicomponent Meningococcal B Vaccine",
          "type": "DRUG"
        },
        {
          "name": "Meningococcal Group B Vaccine MenB",
          "type": "DRUG"
        },
        {
          "name": "Meningococcal Group B Vaccine (recombinant deoxyribonucleic acid [rDNA], component, adsorbed)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid Conjugate Vaccine MenACYW conjugate vaccine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "42 Days",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "42 Days to 50 Years"
      },
      "enrollment_count": 576,
      "start_date": "2021-03-29",
      "completion_date": "2022-07-22",
      "has_results": false,
      "last_update_posted_date": "2025-10-10",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 8,
      "location_summary": "Guntersville, Alabama • San Diego, California • Tampa, Florida + 5 more",
      "locations": [
        {
          "city": "Guntersville",
          "state": "Alabama"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "El Dorado",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04825223"
    },
    {
      "nct_id": "NCT05163223",
      "title": "Therapeutic Cancer Vaccine (AST-301, pNGVL3-hICD) in Patients With Breast Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "AST-301(pNGVL3-hICD)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "rhuGM-CSF",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Pembrolizumab",
          "type": "DRUG"
        },
        {
          "name": "Capecitabine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Aston Sci. Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2022-02-28",
      "completion_date": "2024-05-31",
      "has_results": false,
      "last_update_posted_date": "2024-06-17",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 10,
      "location_summary": "Chandler, Arizona • La Jolla, California • Tampa, Florida + 7 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05163223"
    },
    {
      "nct_id": "NCT02566265",
      "title": "Study of High-dose Influenza Vaccine Efficacy by Repeated Dosing IN Gammopathy Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza",
        "Multiple Myeloma",
        "Waldenstrom's Macroglobulinemia",
        "Plasma Cell Disorders",
        "MGUS"
      ],
      "interventions": [
        {
          "name": "Fluzone High Dose Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Standard of care/Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 122,
      "start_date": "2015-09",
      "completion_date": "2018-06",
      "has_results": true,
      "last_update_posted_date": "2019-01-30",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02566265"
    },
    {
      "nct_id": "NCT02873286",
      "title": "RSV-MVA-BN Vaccine Phase II Trial in ≥ 55 Year Old Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infections"
      ],
      "interventions": [
        {
          "name": "MVA-BN-RSV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Bavarian Nordic",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 420,
      "start_date": "2016-09",
      "completion_date": "2018-12",
      "has_results": true,
      "last_update_posted_date": "2020-09-22",
      "last_synced_at": "2026-09-29T21:02:27.813Z",
      "location_count": 12,
      "location_summary": "Redding, California • San Diego, California • The Villages, Florida + 9 more",
      "locations": [
        {
          "city": "Redding",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "The Villages",
          "state": "Florida"
        },
        {
          "city": "Savannah",
          "state": "Georgia"
        },
        {
          "city": "Stockbridge",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02873286"
    }
  ]
}