{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=RSV+vaccine+formulation+2",
    "query": {
      "intervention": "RSV vaccine formulation 2"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 17,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=RSV+vaccine+formulation+2&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-26T06:05:56.912Z",
  "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": "NCT05903183",
      "title": "A Study to Evaluate the Safety and Immunogenicity of IVX-A12 in Participants of 60 to 85 Years of Age",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "IVX-A12",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Icosavax, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "60 Years to 85 Years"
      },
      "enrollment_count": 264,
      "start_date": "2023-05-15",
      "completion_date": "2024-10-25",
      "has_results": true,
      "last_update_posted_date": "2025-12-05",
      "last_synced_at": "2026-09-26T06:05:56.912Z",
      "location_count": 10,
      "location_summary": "Tempe, Arizona • Hollywood, Florida • Stockbridge, Georgia + 7 more",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Stockbridge",
          "state": "Georgia"
        },
        {
          "city": "Meridian",
          "state": "Idaho"
        },
        {
          "city": "Nampa",
          "state": "Idaho"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05903183"
    },
    {
      "nct_id": "NCT05327816",
      "title": "A Study of Various Respiratory Syncytial Virus (RSV) Pre-Fusion (preF)-Based Vaccine Formulations in Adults Aged 60 Years and Older",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus-associated Lower Respiratory Tract Disease Prevention"
      ],
      "interventions": [
        {
          "name": "RSV preF-based Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Janssen Vaccines & Prevention B.V.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 132,
      "start_date": "2022-04-13",
      "completion_date": "2023-02-14",
      "has_results": true,
      "last_update_posted_date": "2025-05-25",
      "last_synced_at": "2026-09-26T06:05:56.912Z",
      "location_count": 11,
      "location_summary": "Long Beach, California • DeLand, Florida • Miami Lakes, Florida + 7 more",
      "locations": [
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "DeLand",
          "state": "Florida"
        },
        {
          "city": "Miami Lakes",
          "state": "Florida"
        },
        {
          "city": "Wichita",
          "state": "Kansas"
        },
        {
          "city": "Metairie",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05327816"
    },
    {
      "nct_id": "NCT03572062",
      "title": "A Study to Evaluate the Safety and Immunogenicity of an Adjuvanted RSV Vaccine in Healthy Older Adults",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Tract Infection"
      ],
      "interventions": [
        {
          "name": "Formulation A",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Formulation B",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Formulation C",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "65 Years to 85 Years"
      },
      "enrollment_count": 317,
      "start_date": "2018-06-05",
      "completion_date": "2020-08-19",
      "has_results": true,
      "last_update_posted_date": "2021-08-26",
      "last_synced_at": "2026-09-26T06:05:56.912Z",
      "location_count": 4,
      "location_summary": "South Miami, Florida • Peoria, Illinois • Fremont, Nebraska + 1 more",
      "locations": [
        {
          "city": "South Miami",
          "state": "Florida"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Fremont",
          "state": "Nebraska"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03572062"
    },
    {
      "nct_id": "NCT06686654",
      "title": "Study of a Human Metapneumovirus/Respiratory Syncytial Virus mRNA Vaccine Candidate Encapsulated in a Lipid Nanoparticle-based Formulation in Adults Aged 60 Years and Older",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Human Metapneumovirus Immunization",
        "Respiratory Syncytial Virus Immunization"
      ],
      "interventions": [
        {
          "name": "Investigational hMPV/RSV vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Investigational hMPV vaccine (monovalent)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Investigational RSV vaccine (monovalent)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Licensed RSV Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Investigational RSV+hMPV vaccine",
          "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": 1530,
      "start_date": "2024-11-11",
      "completion_date": "2027-01-18",
      "has_results": false,
      "last_update_posted_date": "2025-12-11",
      "last_synced_at": "2026-09-26T06:05:56.912Z",
      "location_count": 24,
      "location_summary": "Phoenix, Arizona • Garden Grove, California • Gardena, California + 20 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "Gardena",
          "state": "California"
        },
        {
          "city": "Huntington Park",
          "state": "California"
        },
        {
          "city": "La Mesa",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06686654"
    },
    {
      "nct_id": "NCT03191383",
      "title": "A Study to Evaluate the Safety, Reactogenicity and Immunogenicity of the GlaxoSmithKline (GSK) Biologicals' Respiratory Syncytial Virus (RSV) Investigational Vaccine (GSK3003891A) in Healthy Pregnant Women and Infants Born to Vaccinated Mothers",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infections"
      ],
      "interventions": [
        {
          "name": "RSV vaccine (GSK3003891A) formulation 1",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSV vaccine (GSK3003891A) formulation 2",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSV vaccine (GSK3003891A) formulation 3",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo (Formulation buffer S9b)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 40 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2017-07-11",
      "completion_date": "2017-07-14",
      "has_results": false,
      "last_update_posted_date": "2018-10-15",
      "last_synced_at": "2026-09-26T06:05:56.912Z",
      "location_count": 3,
      "location_summary": "Newton, Kansas • Syracuse, New York • Ellensburg, Washington",
      "locations": [
        {
          "city": "Newton",
          "state": "Kansas"
        },
        {
          "city": "Syracuse",
          "state": "New York"
        },
        {
          "city": "Ellensburg",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03191383"
    },
    {
      "nct_id": "NCT04491877",
      "title": "Study of an Live-Attenuated Respiratory Syncytial Virus Vaccine in Infants and Toddlers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infection"
      ],
      "interventions": [
        {
          "name": "RSV vaccine formulation 1",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSV vaccine formulation 2",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "18 Months",
        "sex": "ALL",
        "summary": "6 Months to 18 Months"
      },
      "enrollment_count": 259,
      "start_date": "2020-09-17",
      "completion_date": "2023-04-13",
      "has_results": true,
      "last_update_posted_date": "2025-09-09",
      "last_synced_at": "2026-09-26T06:05:56.912Z",
      "location_count": 25,
      "location_summary": "Gardena, California • La Mesa, California • Los Angeles, California + 21 more",
      "locations": [
        {
          "city": "Gardena",
          "state": "California"
        },
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Blackfoot",
          "state": "Idaho"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04491877"
    },
    {
      "nct_id": "NCT02360475",
      "title": "Safety, Reactogenicity and Immunogenicity Study of Different Formulations of GlaxoSmithKline (GSK) Biologicals' Investigational RSV Vaccine (GSK3003891A), in Healthy Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infections"
      ],
      "interventions": [
        {
          "name": "RSV vaccine GSK3003895A (formulation 1)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSV vaccine GSK3003898A (formulation 2)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSV vaccine GSK3003899A (formulation 3)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Boostrix",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 507,
      "start_date": "2015-03-20",
      "completion_date": "2016-06-21",
      "has_results": true,
      "last_update_posted_date": "2018-07-03",
      "last_synced_at": "2026-09-26T06:05:56.912Z",
      "location_count": 7,
      "location_summary": "Mesa, Arizona • San Diego, California • Lenexa, Kansas + 4 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Lenexa",
          "state": "Kansas"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Milford",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02360475"
    },
    {
      "nct_id": "NCT04138056",
      "title": "A Study of a Vaccine Against Respiratory Syncytial Virus (RSV) When Given Alone and Together With a Vaccine Against Diphtheria, Pertussis and Tetanus (Tdap) Viruses Followed by a 2nd Dose of the RSV Vaccine to Healthy Non-Pregnant Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infections"
      ],
      "interventions": [
        {
          "name": "RSVPreF3 formulation 3",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSVPreF3 formulation 2",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Boostrix-ex-US",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Boostrix-US",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 509,
      "start_date": "2019-11-05",
      "completion_date": "2021-11-22",
      "has_results": true,
      "last_update_posted_date": "2024-08-21",
      "last_synced_at": "2026-09-26T06:05:56.912Z",
      "location_count": 4,
      "location_summary": "Miami, Florida • Lenexa, Kansas • Rochester, New York + 1 more",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Lenexa",
          "state": "Kansas"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04138056"
    },
    {
      "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": "2026-09-26T06:05:56.912Z",
      "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": "NCT05639894",
      "title": "Study of a Respiratory Syncytial Virus Candidate Encapsulated in a Lipid Nanoparticle Based Formulation in Adults Aged 18 to 50 Years and 60 Years and Older",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Immunization"
      ],
      "interventions": [
        {
          "name": "RSV vaccine candidate",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 865,
      "start_date": "2022-11-17",
      "completion_date": "2025-05-02",
      "has_results": true,
      "last_update_posted_date": "2026-08-05",
      "last_synced_at": "2026-09-26T06:05:56.912Z",
      "location_count": 25,
      "location_summary": "Huntsville, Alabama • Mesa, Arizona • Peoria, Arizona + 22 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "La Mesa",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05639894"
    }
  ]
}