{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Respiratory+Syncytial+Virus+Immunization",
    "query": {
      "condition": "Respiratory Syncytial Virus Immunization"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 19,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Respiratory+Syncytial+Virus+Immunization&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-22T05:49:07.146Z",
  "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": "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 candiate formulation 1",
          "type": "BIOLOGICAL"
        },
        {
          "name": "RSV vaccine candidate formulation 2",
          "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": false,
      "last_update_posted_date": "2025-05-31",
      "last_synced_at": "2026-07-22T05:49:07.146Z",
      "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"
    },
    {
      "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": "2026-07-22T05:49:07.146Z",
      "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": "NCT06397768",
      "title": "Co-administration Study of an Investigational Live-Attenuated Respiratory Syncytial Virus Vaccine in Infants and Toddlers",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "RSV Immunization"
      ],
      "interventions": [
        {
          "name": "RSVt vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Diphtheria, tetanus, pertussis, poliomyelitis , Haemophilus influenzae type b, and hepatitis B vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Diphtheria, tetanus, pertussis, Haemophilus influenzae type b and poliomyelitis vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Hepatitis B vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Streptococcus pneumoniae vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Rotavirus vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Measles, mumps, and rubella vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Varicella virus vaccine",
          "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": "12 Months",
        "sex": "ALL",
        "summary": "6 Months to 12 Months"
      },
      "enrollment_count": 2226,
      "start_date": "2024-05-13",
      "completion_date": "2025-09-18",
      "has_results": false,
      "last_update_posted_date": "2026-02-03",
      "last_synced_at": "2026-07-22T05:49:07.146Z",
      "location_count": 66,
      "location_summary": "Birmingham, Alabama • Grand Bay, Alabama • Mobile, Alabama + 55 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Grand Bay",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Bell Gardens",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06397768"
    },
    {
      "nct_id": "NCT02624947",
      "title": "A Study to Determine the Safety and Efficacy of the RSV F Vaccine to Protect Infants Via Maternal Immunization",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infections"
      ],
      "interventions": [
        {
          "name": "RSV F vaccine with adjuvant",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Formulation buffer",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novavax",
      "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": 4636,
      "start_date": "2015-12",
      "completion_date": "2019-07-12",
      "has_results": true,
      "last_update_posted_date": "2025-05-06",
      "last_synced_at": "2026-07-22T05:49:07.146Z",
      "location_count": 49,
      "location_summary": "Birmingham, Alabama • Cullman, Alabama • Fort Defiance, Arizona + 43 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Cullman",
          "state": "Alabama"
        },
        {
          "city": "Fort Defiance",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02624947"
    },
    {
      "nct_id": "NCT07050732",
      "title": "Immunogenicity of RSVPreF3 Vaccine in Immunocompromised Persons",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus (RSV)"
      ],
      "interventions": [
        {
          "name": "Arexvy (2 doses total)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Arexvy (3 doses total)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Arexvy (1 dose total)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 170,
      "start_date": "2025-12-04",
      "completion_date": "2028-04",
      "has_results": false,
      "last_update_posted_date": "2025-12-12",
      "last_synced_at": "2026-07-22T05:49:07.146Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07050732"
    },
    {
      "nct_id": "NCT06172660",
      "title": "Real-World Effectiveness of Perinatal RSV Immunoprophylaxis",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "RSV Infection"
      ],
      "interventions": [
        {
          "name": "Nirsevimab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "12 Months",
        "sex": "ALL",
        "summary": "Up to 12 Months"
      },
      "enrollment_count": 3750,
      "start_date": "2024-10-28",
      "completion_date": "2028-12-30",
      "has_results": false,
      "last_update_posted_date": "2025-08-14",
      "last_synced_at": "2026-07-22T05:49:07.146Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06172660"
    },
    {
      "nct_id": "NCT02247726",
      "title": "RSV F Vaccine Maternal Immunization Study in Healthy Third-trimester Pregnant Women.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infections"
      ],
      "interventions": [
        {
          "name": "Saline Placebo (0.5mL injection)",
          "type": "DRUG"
        },
        {
          "name": "RSV F vaccine (0.5mL injection)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novavax",
      "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": 50,
      "start_date": "2014-09",
      "completion_date": "2016-07",
      "has_results": false,
      "last_update_posted_date": "2022-05-27",
      "last_synced_at": "2026-07-22T05:49:07.146Z",
      "location_count": 7,
      "location_summary": "Nampa, Idaho • Hutchinson, Kansas • Kansas City, Kansas + 4 more",
      "locations": [
        {
          "city": "Nampa",
          "state": "Idaho"
        },
        {
          "city": "Hutchinson",
          "state": "Kansas"
        },
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Norfolk",
          "state": "Nebraska"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02247726"
    },
    {
      "nct_id": "NCT07158814",
      "title": "Safety of RSV Preventive Monoclonal Antibody",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Fever",
        "Adverse Event Following Immunisation"
      ],
      "interventions": [
        {
          "name": "Respiratory Syncytial Virus (RSV) Preventive Monoclonal Antibody",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Weeks",
        "maximum_age": "30 Weeks",
        "sex": "ALL",
        "summary": "6 Weeks to 30 Weeks"
      },
      "enrollment_count": 524,
      "start_date": "2025-10-02",
      "completion_date": "2027-04",
      "has_results": false,
      "last_update_posted_date": "2026-03-16",
      "last_synced_at": "2026-07-22T05:49:07.146Z",
      "location_count": 6,
      "location_summary": "Oakland, California • Atlanta, Georgia • New York, New York + 2 more",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07158814"
    },
    {
      "nct_id": "NCT05229068",
      "title": "A Study of Safety, Reactogenicity and Immune Response of the Repeat Vaccination Against RSV When Given to Female Participants of 18-49 Years of Age During Their Subsequent Uncomplicated Pregnancy",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infections"
      ],
      "interventions": [
        {
          "name": "RSV MAT",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 49 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2022-03-11",
      "completion_date": "2024-10-24",
      "has_results": false,
      "last_update_posted_date": "2022-04-07",
      "last_synced_at": "2026-07-22T05:49:07.146Z",
      "location_count": 2,
      "location_summary": "Missoula, Montana • Norfolk, Nebraska",
      "locations": [
        {
          "city": "Missoula",
          "state": "Montana"
        },
        {
          "city": "Norfolk",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05229068"
    },
    {
      "nct_id": "NCT02273882",
      "title": "An Observational Study of Respiratory Syncytial Virus (RSV) Hospitalizations in Preterm Infants",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Respiratory Syncytial Virus Hospitalizations"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "12 Months",
        "sex": "ALL",
        "summary": "Up to 12 Months"
      },
      "enrollment_count": 497,
      "start_date": "2014-11-17",
      "completion_date": "2016-08-19",
      "has_results": false,
      "last_update_posted_date": "2017-05-23",
      "last_synced_at": "2026-07-22T05:49:07.146Z",
      "location_count": 44,
      "location_summary": "Little Rock, Arkansas • Loma Linda, California • Long Beach, California + 40 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02273882"
    }
  ]
}