{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Fluzone%C2%AE+Quadrivalent", "query": { "intervention": "Fluzone® Quadrivalent" }, "page_size": 10 }, "pagination": { "page": 1, "page_size": 10, "total_count": 60, "total_pages": 6, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Fluzone%C2%AE+Quadrivalent&page=2&page_size=10", "previous_page_url": null }, "source": "remote", "last_synced_at": "2026-09-09T15:03:36.681Z", "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": "NCT05215327", "title": "High vs. Standard Dose Influenza Vaccine in Lung Allograft Recipients", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Immunization; Infection", "Transplantation Infection", "Influenza" ], "interventions": [ { "name": "High Dose Quadrivalent Inactivated Influenza Vaccine", "type": "BIOLOGICAL" }, { "name": "Standard Dose Quadrivalent Inactivated Influenza Vaccine", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Vanderbilt University Medical Center", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "16 Years", "maximum_age": null, "sex": "ALL", "summary": "16 Years and older" }, "enrollment_count": 270, "start_date": "2022-11-08", "completion_date": "2027-12-31", "has_results": false, "last_update_posted_date": "2026-09-04", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 1, "location_summary": "Nashville, Tennessee", "locations": [ { "city": "Nashville", "state": "Tennessee" } ], "official_url": "https://clinicaltrials.gov/study/NCT05215327" }, { "nct_id": "NCT01240746", "title": "Study of Quadrivalent Influenza Vaccine Among Children", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Influenza" ], "interventions": [ { "name": "Licensed 2010-2011 Trivalent Influenza Vaccine, No Preservative", "type": "BIOLOGICAL" }, { "name": "Investigational Trivalent Influenza Vaccine with alternate B strain, No Preservative", "type": "BIOLOGICAL" }, { "name": "Quadrivalent Influenza Vaccine, No Preservative", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Sanofi Pasteur, a Sanofi Company", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "6 Months", "maximum_age": "8 Years", "sex": "ALL", "summary": "6 Months to 8 Years" }, "enrollment_count": 4363, "start_date": "2010-11", "completion_date": "2012-02", "has_results": true, "last_update_posted_date": "2015-07-14", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 67, "location_summary": "Dothan, Alabama • Chandler, Arizona • Mesa, Arizona + 55 more", "locations": [ { "city": "Dothan", "state": "Alabama" }, { "city": "Chandler", "state": "Arizona" }, { "city": "Chandler", "state": "Arizona" }, { "city": "Mesa", "state": "Arizona" }, { "city": "Mesa", "state": "Arizona" } ], "official_url": "https://clinicaltrials.gov/study/NCT01240746" }, { "nct_id": "NCT06067555", "title": "Intradermal Influenza Vaccination", "overall_status": "RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "EARLY_PHASE1" ], "conditions": [ "Vaccine Reaction" ], "interventions": [ { "name": "MicronJet", "type": "DEVICE" }, { "name": "Fluzone® Quadrivalent", "type": "BIOLOGICAL" }, { "name": "Bacteriostatic Saline", "type": "OTHER" } ], "intervention_types": [ "DEVICE", "BIOLOGICAL", "OTHER" ], "sponsor": "Yale University", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "40 Years", "sex": "ALL", "summary": "18 Years to 40 Years" }, "enrollment_count": 249, "start_date": "2024-01-24", "completion_date": "2026-05", "has_results": false, "last_update_posted_date": "2025-06-19", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 1, "location_summary": "New Haven, Connecticut", "locations": [ { "city": "New Haven", "state": "Connecticut" } ], "official_url": "https://clinicaltrials.gov/study/NCT06067555" }, { "nct_id": "NCT02553343", "title": "A Study of the Safety and Immunogenicity of High-Dose Quadrivalent Influenza Vaccine in Subjects Aged 65 Years and Older", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Influenza" ], "interventions": [ { "name": "High-dose quadrivalent influenza virus vaccine", "type": "BIOLOGICAL" }, { "name": "High-dose influenza virus vaccine", "type": "BIOLOGICAL" }, { "name": "High-dose trivalent inactivated influenza vaccine", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Sanofi Pasteur, a Sanofi Company", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "65 Years", "maximum_age": null, "sex": "ALL", "summary": "65 Years and older" }, "enrollment_count": 792, "start_date": "2015-09", "completion_date": "2016-04-04", "has_results": false, "last_update_posted_date": "2018-02-09", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 9, "location_summary": "Milford, Connecticut • Coral Gables, Florida • Wichita, Kansas + 6 more", "locations": [ { "city": "Milford", "state": "Connecticut" }, { "city": "Coral Gables", "state": "Florida" }, { "city": "Wichita", "state": "Kansas" }, { "city": "St Louis", "state": "Missouri" }, { "city": "Rochester", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT02553343" }, { "nct_id": "NCT03739112", "title": "Efficacy of a Plant-derived Quadrivalent Virus-like Particle (VLP) Vaccine in the Elderly", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Virus Diseases", "RNA Virus Infections", "Respiratory Tract Diseases", "Respiratory Tract Infections" ], "interventions": [ { "name": "Quadrivalent VLP Vaccine", "type": "BIOLOGICAL" }, { "name": "Fluarix Quadrivalent® Comparator Vaccine", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Medicago", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "65 Years", "maximum_age": null, "sex": "ALL", "summary": "65 Years and older" }, "enrollment_count": 12794, "start_date": "2018-09-18", "completion_date": "2019-07-16", "has_results": true, "last_update_posted_date": "2023-06-23", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 50, "location_summary": "Mobile, Alabama • Tempe, Arizona • Banning, California + 42 more", "locations": [ { "city": "Mobile", "state": "Alabama" }, { "city": "Tempe", "state": "Arizona" }, { "city": "Banning", "state": "California" }, { "city": "Redding", "state": "California" }, { "city": "Sacramento", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT03739112" }, { "nct_id": "NCT02285998", "title": "Protective Efficacy of Flublok® Quadrivalent Versus Licensed Inactivated Influenza Vaccine in Adults ≥50 Years of Age", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Influenza" ], "interventions": [ { "name": "Flublok Quadrivalent Influenza Vaccine", "type": "BIOLOGICAL" }, { "name": "Inactivated Influenza Vaccine", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Protein Sciences Corporation", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "50 Years", "maximum_age": null, "sex": "ALL", "summary": "50 Years and older" }, "enrollment_count": 9003, "start_date": "2014-10", "completion_date": "2015-05", "has_results": true, "last_update_posted_date": "2017-10-27", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 38, "location_summary": "Mobile, Alabama • Tempe, Arizona • Little Rock, Arkansas + 34 more", "locations": [ { "city": "Mobile", "state": "Alabama" }, { "city": "Tempe", "state": "Arizona" }, { "city": "Little Rock", "state": "Arkansas" }, { "city": "Redding", "state": "California" }, { "city": "Sacramento", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT02285998" }, { "nct_id": "NCT03722589", "title": "Immunogenicity Trial of Egg- Versus Non-Egg-Based Influenza Vaccines Among HCP", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Influenza" ], "interventions": [ { "name": "Flublok", "type": "BIOLOGICAL" }, { "name": "Flucelvax", "type": "BIOLOGICAL" }, { "name": "Fluarix", "type": "BIOLOGICAL" }, { "name": "Fluzone", "type": "BIOLOGICAL" }, { "name": "Fluzone High-Dose", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Centers for Disease Control and Prevention", "sponsor_class": "FED", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 944, "start_date": "2018-09-12", "completion_date": "2020-07-31", "has_results": true, "last_update_posted_date": "2024-07-22", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 2, "location_summary": "Portland, Oregon • Temple, Texas", "locations": [ { "city": "Portland", "state": "Oregon" }, { "city": "Temple", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT03722589" }, { "nct_id": "NCT01218646", "title": "Study of Quadrivalent Influenza Vaccine Among Adults", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Influenza" ], "interventions": [ { "name": "Investigational Quadrivalent Inactivated Influenza Vaccine, No Preservative", "type": "BIOLOGICAL" }, { "name": "Investigational Trivalent Inactivated Influenza Vaccine, No Preservative", "type": "BIOLOGICAL" }, { "name": "Fluzone®: 2010-2011 Trivalent Inactivated Influenza Vaccine, No Preservative", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "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": 739, "start_date": "2010-10", "completion_date": "2011-04", "has_results": true, "last_update_posted_date": "2013-10-23", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 12, "location_summary": "Hoover, Alabama • South Miami, Florida • Springfield, Missouri + 9 more", "locations": [ { "city": "Hoover", "state": "Alabama" }, { "city": "South Miami", "state": "Florida" }, { "city": "Springfield", "state": "Missouri" }, { "city": "New York", "state": "New York" }, { "city": "Rochester", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT01218646" }, { "nct_id": "NCT02831751", "title": "Immunogenicity, Safety, and Tolerability of a Plant-Derived Quadrivalent VLP Influenza Vaccine in Elderly Adults", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Virus Diseases", "RNA Virus Infections", "Respiratory Tract Diseases", "Respiratory Tract Infections" ], "interventions": [ { "name": "30 µg/strain of Quadrivalent VLP Vaccine", "type": "BIOLOGICAL" }, { "name": "60 µg/strain of Quadrivalent VLP Vaccine", "type": "BIOLOGICAL" }, { "name": "FluLaval® Tetra (15 µg/strain)", "type": "BIOLOGICAL" }, { "name": "Fluzone® High-Dose (60 µg/strain)", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Medicago", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "65 Years", "maximum_age": null, "sex": "ALL", "summary": "65 Years and older" }, "enrollment_count": 1001, "start_date": "2016-04", "completion_date": "2017-01", "has_results": false, "last_update_posted_date": "2019-10-25", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 6, "location_summary": "Redding, California • Hollywood, Florida • South Miami, Florida + 3 more", "locations": [ { "city": "Redding", "state": "California" }, { "city": "Hollywood", "state": "Florida" }, { "city": "South Miami", "state": "Florida" }, { "city": "Savannah", "state": "Georgia" }, { "city": "Omaha", "state": "Nebraska" } ], "official_url": "https://clinicaltrials.gov/study/NCT02831751" }, { "nct_id": "NCT05650554", "title": "Safety and Immunogenicity of Quadrivalent Influenza mRNA Vaccine MRT5413 in Adult Participants18 Years of Age and Older", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1", "PHASE2" ], "conditions": [ "Influenza Immunization" ], "interventions": [ { "name": "Quadrivalent Influenza mRNA Vaccine MRT5413", "type": "BIOLOGICAL" }, { "name": "Quadrivalent Recombinant Influenza Vaccine", "type": "BIOLOGICAL" }, { "name": "Quadrivalent Influenza Standard Dose Vaccine", "type": "BIOLOGICAL" }, { "name": "Quadrivalent Influenza High-Dose 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": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 682, "start_date": "2022-12-12", "completion_date": "2024-04-02", "has_results": false, "last_update_posted_date": "2025-03-19", "last_synced_at": "2026-09-09T15:03:36.681Z", "location_count": 28, "location_summary": "Chula Vista, California • Gardena, California • Long Beach, California + 24 more", "locations": [ { "city": "Chula Vista", "state": "California" }, { "city": "Gardena", "state": "California" }, { "city": "Long Beach", "state": "California" }, { "city": "North Hollywood", "state": "California" }, { "city": "San Diego", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT05650554" } ] }