{"id":"influenza-vaccination","safety":{"commonSideEffects":[{"rate":"10-30","effect":"Injection site soreness or erythema"},{"rate":"5-15","effect":"Myalgia"},{"rate":"5-10","effect":"Headache"},{"rate":"1-5","effect":"Low-grade fever"},{"rate":"5-10","effect":"Fatigue"}]},"_chembl":null,"_dailymed":null,"mechanism":{"_ai_source":"claude-haiku-4.5","explanation":"The vaccine contains inactivated or attenuated influenza virus antigens that trigger both humoral (antibody-mediated) and cell-mediated immune responses. This priming of the adaptive immune system enables rapid recognition and neutralization of wild-type influenza virus upon natural exposure, reducing infection risk and disease severity.","oneSentence":"Influenza vaccination stimulates the immune system to produce antibodies and cellular immunity against circulating influenza virus strains.","_ai_confidence":"high"},"_scrapedAt":"2026-03-28T00:40:47.792Z","_scrapedBy":"cloudflare-swarm","_wikipedia":null,"indications":{"approved":[{"name":"Prevention of seasonal influenza in adults and children"},{"name":"Reduction of influenza-related morbidity and mortality in high-risk populations"}]},"trialDetails":[{"nctId":"NCT04304768","phase":"PHASE4","title":"Opioid, HIV and Immune System","status":"ACTIVE_NOT_RECRUITING","sponsor":"University of Miami","startDate":"2020-11-18","conditions":"Immune Defect","enrollment":400},{"nctId":"NCT07493460","phase":"PHASE4","title":"Longitudinal Tracking of Bone Marrow Plasma Cell Responses to Licensed Human Vaccines","status":"RECRUITING","sponsor":"Washington University School of Medicine","startDate":"2025-08-26","conditions":"Immunology, Healthy Adults","enrollment":25},{"nctId":"NCT04367883","phase":"","title":"Influenza Vaccination, ACEI and ARB in the Evolution of SARS-CoV2 Infection","status":"RECRUITING","sponsor":"Consorci Sanitari de Terrassa","startDate":"2020-03-01","conditions":"COVID19, Influenza Vaccination, ACE Inhibitors","enrollment":3000},{"nctId":"NCT01191853","phase":"","title":"Cellular and Molecular Characterization of the Immune Response in Healthy NIH Employees atBaseline, and After Immunization With the H1N1 or Seasonal Influenza Vaccines","status":"COMPLETED","sponsor":"National Heart, Lung, and Blood Institute (NHLBI)","startDate":"2009-09-18","conditions":"Healthy Volunteers, Influenza","enrollment":203},{"nctId":"NCT07485855","phase":"PHASE3","title":"Influenza Vaccination Strategy for Patients With Hematologic Malignancy","status":"RECRUITING","sponsor":"Asan Medical Center","startDate":"2025-12-04","conditions":"Hematologic Neoplasms, Influenza, Immunogenicity","enrollment":60},{"nctId":"NCT07431853","phase":"PHASE2","title":"A Study to Learn About mRNA Vaccines Against Influenza in Adults","status":"RECRUITING","sponsor":"Pfizer","startDate":"2026-02-23","conditions":"Healthy Adults","enrollment":770},{"nctId":"NCT05705440","phase":"PHASE3","title":"A Follow-up Study to Describe the Safety of Study Participants Who Received RSVPreF3 Maternal Vaccination (Any Dose) or Controls From Previous RSV MAT Studies During Any Pregnancy Conceived Post Vaccination/Control","status":"COMPLETED","sponsor":"GlaxoSmithKline","startDate":"2023-02-07","conditions":"Respiratory Syncytial Virus Infections","enrollment":3855},{"nctId":"NCT02200276","phase":"NA","title":"Influenza Immunization in Adults Over Age 75","status":"RECRUITING","sponsor":"Johns Hopkins University","startDate":"2014-03","conditions":"Influenza, Immunization, Older Adults","enrollment":1025},{"nctId":"NCT06599658","phase":"PHASE2","title":"COVID-19 Booster and IIV Schedule in Immunocompromised Hosts","status":"RECRUITING","sponsor":"McGill University Health Centre/Research Institute of the McGill University Health Centre","startDate":"2024-11-20","conditions":"COVID 19, Influenza, Rheumatoid Arthritis (RA)","enrollment":660},{"nctId":"NCT07096245","phase":"NA","title":"Conectados: Social Networks and Social Media for Vaccine Uptake","status":"COMPLETED","sponsor":"University of California, San Francisco","startDate":"2025-09-10","conditions":"Vaccination","enrollment":507},{"nctId":"NCT06800885","phase":"","title":"Repeated Cross Sectional Surveillance Study To Determine the Influenza Vaccination Rates in German Participants","status":"COMPLETED","sponsor":"Sanofi Pasteur, a Sanofi Company","startDate":"2024-10-22","conditions":"Influenza Immunization","enrollment":5000},{"nctId":"NCT05565586","phase":"NA","title":"Impact of High Dietary Fiber on Microbiome and Vaccine Responses","status":"ACTIVE_NOT_RECRUITING","sponsor":"M.D. Anderson Cancer Center","startDate":"2022-08-23","conditions":"Influenza","enrollment":31},{"nctId":"NCT05294588","phase":"PHASE2","title":"Efficacy of Immunization With 4C-MenB in Preventing Experimental Urethral Infection With Neisseria Gonorrhoeae","status":"COMPLETED","sponsor":"University of North Carolina, Chapel Hill","startDate":"2022-04-18","conditions":"Gonorrhea Male","enrollment":65},{"nctId":"NCT06336317","phase":"PHASE4","title":"Effect of infLuenza vaccInation After Myocardial INfArction on Cardiac inflammaTory responsE","status":"RECRUITING","sponsor":"Region Örebro County","startDate":"2024-04-24","conditions":"Acute Myocardial Infarction, Cardiovascular Diseases, Inflammatory Response","enrollment":90},{"nctId":"NCT01086904","phase":"PHASE2","title":"Safety and Efficacy of an Inactivated and Non Adjuvanted Vaccine Against Influenza A in Renal Transplant Recipients","status":"COMPLETED","sponsor":"Institut National de la Santé Et de la Recherche Médicale, France","startDate":"2009-11","conditions":"Renal Transplant Recipients, Immunosuppression","enrollment":122},{"nctId":"NCT06567860","phase":"PHASE4","title":"Characterizing Late-season Influenza Vaccine Responses to Compare the 2023 and 2024 Vaccine Formulations","status":"COMPLETED","sponsor":"La Jolla Institute for Immunology","startDate":"2024-05-21","conditions":"Influenza A","enrollment":23},{"nctId":"NCT03501576","phase":"","title":"Evaluation of Human Immune Responses Vaccination in Patients With Lymphoma","status":"RECRUITING","sponsor":"Emory University","startDate":"2018-04-06","conditions":"Chronic Lymphocytic Leukemia, Diffuse Large B-Cell Lymphoma, Follicular Lymphoma","enrollment":200},{"nctId":"NCT07161739","phase":"NA","title":"Vaccination Nudges From Pharmacists","status":"ACTIVE_NOT_RECRUITING","sponsor":"University of Calgary","startDate":"2025-11-06","conditions":"Stroke, Influenza Human, Influenza Vaccines","enrollment":20000},{"nctId":"NCT07282795","phase":"","title":"Post-marketing Surveillance Study for the Safety of Efluelda® Pre-filled Syringe","status":"NOT_YET_RECRUITING","sponsor":"Sanofi","startDate":"2026-03-31","conditions":"Influenza Immunization, Healthy Volunteers","enrollment":670},{"nctId":"NCT05108818","phase":"PHASE4","title":"Characterization of Humoral and Cellular Immune Responses Elicited by Influenza Vaccination in Healthy Adults","status":"RECRUITING","sponsor":"University of Pennsylvania","startDate":"2021-10-07","conditions":"Influenza, Human","enrollment":700},{"nctId":"NCT07386509","phase":"EARLY_PHASE1","title":"WU 345: Immune Responses to Adjuvanted and Non-adjuvanted Seasonal Influenza Vaccines in the Lymphoid Tissues.","status":"TERMINATED","sponsor":"Washington University School of Medicine","startDate":"2020-03-17","conditions":"Healthy","enrollment":2},{"nctId":"NCT07372950","phase":"NA","title":"Kaiser Colorado Flu Nudge","status":"ACTIVE_NOT_RECRUITING","sponsor":"Kaiser Permanente","startDate":"2025-10-06","conditions":"Influenza, Vaccination","enrollment":100000},{"nctId":"NCT06451159","phase":"PHASE1","title":"A Study of KYV-101, a CD19 CAR T Cell Therapy, in Participants With Treatment Refractory Progressive Multiple Sclerosis","status":"ACTIVE_NOT_RECRUITING","sponsor":"Bruce Cree","startDate":"2024-06-20","conditions":"Progressive Multiple Sclerosis","enrollment":10},{"nctId":"NCT07310472","phase":"NA","title":"Administration of the Nasal Influenza Vaccine to Children in Daycare or at a Healthcare Facility","status":"RECRUITING","sponsor":"Turku University Hospital","startDate":"2025-10-27","conditions":"Influenza Vaccination","enrollment":6000},{"nctId":"NCT06074237","phase":"NA","title":"Improving Vaccine Counseling Skills Among Residents Using Educational Modules and Standardized Patient Encounters","status":"COMPLETED","sponsor":"Corewell Health East","startDate":"2024-04-25","conditions":"Vaccine Refusal, Vaccine-Preventable Diseases, Physician-Patient Relations","enrollment":112},{"nctId":"NCT07357467","phase":"","title":"Effect of Oral Supplement on Influenza Vaccine Long-term Response","status":"NOT_YET_RECRUITING","sponsor":"Tsinghua University","startDate":"2026-03","conditions":"Influenza, Immunosenescence","enrollment":30},{"nctId":"NCT04613206","phase":"PHASE2","title":"High vs. Standard Dose Influenza Vaccine in Adult SOT Recipients","status":"ACTIVE_NOT_RECRUITING","sponsor":"Vanderbilt University Medical Center","startDate":"2021-01-11","conditions":"Immunization; Infection, Transplantation Infection, Influenza","enrollment":396},{"nctId":"NCT06907511","phase":"PHASE1, PHASE2","title":"Study to Evaluate the Safety and the Immunogenicity of a Second Generation Structurally Designed mRNA Vaccine Candidate Against Pandemic Influenza H5 HA Strain in Healthy Adult Participants Aged 18 Years and Older","status":"ACTIVE_NOT_RECRUITING","sponsor":"Sanofi","startDate":"2025-04-17","conditions":"Pandemic Influenza Immunization, Healthy Volunteers","enrollment":720},{"nctId":"NCT06503900","phase":"PHASE4","title":"Simultaneous mRNA COVID-19 and IIV Vaccination in Pregnancy Study","status":"COMPLETED","sponsor":"Duke University","startDate":"2024-09-12","conditions":"Birth Outcomes, Safety, Adverse Event Following Immunization","enrollment":98},{"nctId":"NCT06024096","phase":"PHASE4","title":"Systems Biological Assessment of Statin Effect on Vaccine Responses","status":"COMPLETED","sponsor":"Emory University","startDate":"2023-09-20","conditions":"Vaccine Response","enrollment":63},{"nctId":"NCT07259252","phase":"NA","title":"Influenza Vaccination After Acute Coronary Syndrome","status":"RECRUITING","sponsor":"Tongji Hospital","startDate":"2025-12-03","conditions":"Acute Coronary Syndromes (ACS)","enrollment":6620},{"nctId":"NCT01901770","phase":"NA","title":"The Parents in Appalachia Receive Education Needed for Teen Project","status":"ACTIVE_NOT_RECRUITING","sponsor":"Ohio State University Comprehensive Cancer Center","startDate":"2012-01","conditions":"Healthy, Human Papilloma Virus Infection","enrollment":624},{"nctId":"NCT05384288","phase":"","title":"Response to Influenza Vaccination in Pediatric Oncology Patients","status":"RECRUITING","sponsor":"St. Jude Children's Research Hospital","startDate":"2022-10-07","conditions":"Hematologic Malignancy, Pediatric Cancer, Transplant-Related Cancer","enrollment":150},{"nctId":"NCT02518555","phase":"PHASE2","title":"Ibrutinib as an Immune Modulating Agent for Patients With Asymptomatic, High-risk CLL/SLL Risk Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma","status":"ACTIVE_NOT_RECRUITING","sponsor":"Jennifer Woyach","startDate":"2016-01-12","conditions":"Chronic Lymphocytic Leukemia, Small Lymphocytic Lymphoma","enrollment":42},{"nctId":"NCT06824779","phase":"PHASE4","title":"Impact of FLU Vaccination on Nasal Resident Memory Immune Responses and Peripheral Respiratory-tropic Memory Immune Responses","status":"ACTIVE_NOT_RECRUITING","sponsor":"Centre Hospitalier Universitaire de Saint Etienne","startDate":"2025-12-05","conditions":"Volunteers, Flu Vaccine","enrollment":30},{"nctId":"NCT07305207","phase":"PHASE1","title":"Establishing a Controlled Human Infection Model for Influenza H3N2 as a Foundation for Pandemic Preparedness","status":"NOT_YET_RECRUITING","sponsor":"Dalhousie University","startDate":"2026-02-01","conditions":"Influenza (Healthy Volunteers)","enrollment":32},{"nctId":"NCT06437834","phase":"NA","title":"Increasing Men's Engagement in Preventive Healthcare Through an Enhanced Cocoon Vaccination Strategy","status":"COMPLETED","sponsor":"Case Western Reserve University","startDate":"2025-08-15","conditions":"Vaccines, Preventive Medicine","enrollment":176},{"nctId":"NCT02872311","phase":"NA","title":"Open-Label Influenza Vaccine Evaluation","status":"COMPLETED","sponsor":"Marshfield Clinic Research Foundation","startDate":"2016-09","conditions":"Immune Response","enrollment":179},{"nctId":"NCT01024400","phase":"PHASE2","title":"Immunogenicity and Safety of an Inactivated Non-adjuvanted A(H1N1)v Influenza Vaccine in Pregnant Women","status":"COMPLETED","sponsor":"Institut National de la Santé Et de la Recherche Médicale, France","startDate":"2009-11","conditions":"Influenza","enrollment":110},{"nctId":"NCT05031663","phase":"NA","title":"Effect of Almonds on Immune Strength and Response to Flu Vaccination in Overweight Older Men and Postmenopausal Women: A Randomized Controlled Study","status":"COMPLETED","sponsor":"Loma Linda University","startDate":"2021-08-12","conditions":"Immune Response, Inflammation","enrollment":61},{"nctId":"NCT07240922","phase":"PHASE4","title":"The Dynamics of the Immune Responses to Repeat Influenza Vaccination Exposures (DRIVE III) Study","status":"RECRUITING","sponsor":"The University of Hong Kong","startDate":"2025-10-01","conditions":"Influenza","enrollment":600},{"nctId":"NCT05215327","phase":"PHASE2","title":"High vs. Standard Dose Influenza Vaccine in Lung Allograft Recipients","status":"RECRUITING","sponsor":"Vanderbilt University Medical Center","startDate":"2022-11-08","conditions":"Immunization; Infection, Transplantation Infection, Influenza","enrollment":270},{"nctId":"NCT06168019","phase":"","title":"Influenza & COVID-19 Obstetric and Perinatal Epidemiology Study in India","status":"RECRUITING","sponsor":"Boston University","startDate":"2023-12-26","conditions":"Influenza, COVID-19, SARS-COV-2 Infection","enrollment":10000},{"nctId":"NCT06508437","phase":"PHASE4","title":"Effect of Influenza Vaccination on Global Systemic Inflammatory Markers in Patients With Stable Coronary Artery Disease","status":"COMPLETED","sponsor":"University Hospital, Tours","startDate":"2024-10-21","conditions":"Coronary Artery Disease, Inflammatory Response, Atherosclerosis","enrollment":47},{"nctId":"NCT01499914","phase":"PHASE4","title":"Cohort Study Evaluating the Clinical Effectiveness, Safety and Immunogenicity to the Pandemic Influenza Vaccination","status":"COMPLETED","sponsor":"Assistance Publique - Hôpitaux de Paris","startDate":"2009-11","conditions":"Cystic Fibrosis With Gastrointestinal Manifestation","enrollment":439},{"nctId":"NCT01065285","phase":"PHASE4","title":"Vaccination Against Influenza in Autoimmune Diseases","status":"COMPLETED","sponsor":"Assistance Publique - Hôpitaux de Paris","startDate":"2009-10","conditions":"Autoimmune Diseases","enrollment":234},{"nctId":"NCT07232745","phase":"PHASE4","title":"Mucosal and Systemic Immune Responses Induced by an Intranasal Influenza Live Attenuated Vaccine","status":"ACTIVE_NOT_RECRUITING","sponsor":"Jiangsu Province Centers for Disease Control and Prevention","startDate":"2025-10-12","conditions":"Influenza","enrollment":60},{"nctId":"NCT07231016","phase":"","title":"Influenza Vaccination Against Infectious Complications and Mortality in Older Adults With Fractures: a Large-scale Retrospective Cohort Study","status":"COMPLETED","sponsor":"Taipei Medical University Hospital","startDate":"2019-11-01","conditions":"Fracture, Influenza Vaccination","enrollment":561566},{"nctId":"NCT05074303","phase":"PHASE2","title":"Beta-glucan and Immune Response to Influenza Vaccine","status":"COMPLETED","sponsor":"University of Florida","startDate":"2022-07-18","conditions":"Healthy Aging","enrollment":78},{"nctId":"NCT06501963","phase":"PHASE4","title":"Revealing Protective Immunity to Influenza Using Systems Immunology","status":"COMPLETED","sponsor":"Emory University","startDate":"2024-10-14","conditions":"Influenza","enrollment":51},{"nctId":"NCT07147517","phase":"","title":"Preparedness Through Respiratory Virus Epidemiology and Community Engagement","status":"RECRUITING","sponsor":"University of California, San Diego","startDate":"2025-10-08","conditions":"Respiratory Infection Virus, COVID -19, RSV","enrollment":25000},{"nctId":"NCT05479370","phase":"PHASE3","title":"Immunogenicity Trial of 3 Influenza Vaccines","status":"COMPLETED","sponsor":"Tan Tock Seng Hospital","startDate":"2022-09-29","conditions":"Influenza Vaccination","enrollment":366},{"nctId":"NCT03396575","phase":"PHASE1","title":"Brain Stem Gliomas Treated With Adoptive Cellular Therapy During Focal Radiotherapy Recovery Alone or With Dose-intensified Temozolomide (Phase I)","status":"TERMINATED","sponsor":"University of Florida","startDate":"2018-07-17","conditions":"Diffuse Intrinsic Pontine Glioma (DIPG), Brain Stem Glioma","enrollment":11},{"nctId":"NCT06605625","phase":"","title":"Vaccine Responses in Cancer","status":"ACTIVE_NOT_RECRUITING","sponsor":"Abramson Cancer Center at Penn Medicine","startDate":"2022-11-04","conditions":"Viral Vaccines","enrollment":250},{"nctId":"NCT04963166","phase":"","title":"Natural History of Systemic and Nasal Mucosal Immunity After Influenza Vaccination in a Pediatric Population","status":"COMPLETED","sponsor":"National Institute of Allergy and Infectious Diseases (NIAID)","startDate":"2021-09-24","conditions":"Influenza Immunity","enrollment":65},{"nctId":"NCT07192458","phase":"PHASE2","title":"High vs. Standard Dose Influenza Vaccines in Lung Transplant (Repeater)","status":"RECRUITING","sponsor":"Vanderbilt University Medical Center","startDate":"2025-09-17","conditions":"Immunization; Infection|Transplantation Infection|Influenza, Influenza","enrollment":60},{"nctId":"NCT04499534","phase":"","title":"BRCA1/2 Flu Vaccine","status":"ACTIVE_NOT_RECRUITING","sponsor":"Abramson Cancer Center at Penn Medicine","startDate":"2019-10-28","conditions":"BRCA1 Mutation, BRCA2 Mutation","enrollment":50},{"nctId":"NCT06664151","phase":"EARLY_PHASE1","title":"A Phase 0 Window of Opportunity Trial of Intratumoral Seasonal Influenza Immunization in Cutaneous Squamous Cell Carcinoma (CSCC) Patients Awaiting Curative Excision","status":"RECRUITING","sponsor":"Dana-Farber Cancer Institute","startDate":"2024-11-26","conditions":"Skin Cancer, Cutaneous Squamous Cell Carcinoma (CSCC), Cutaneous Squamous Cell Cancer","enrollment":25},{"nctId":"NCT06626321","phase":"NA","title":"Behavioral Economics to Improve Flu Vaccination Using EHR Nudges Replication","status":"COMPLETED","sponsor":"University of Pennsylvania","startDate":"2024-10-21","conditions":"Behavior, Health, Flu, Flu Vaccination","enrollment":26248},{"nctId":"NCT03816878","phase":"PHASE1","title":"Immunogenicity and Safety Study of Inactivated Subunit H5N1 Influenza Vaccine in Prior Recipients of Live Attenuated H2N2, H6N1 and H9N2 Influenza Vaccines and in H5N1 and Live Attenuated Vaccine Naïve Individuals","status":"COMPLETED","sponsor":"National Institute of Allergy and Infectious Diseases (NIAID)","startDate":"2019-01-08","conditions":"Influenza","enrollment":32},{"nctId":"NCT05866237","phase":"NA","title":"COVID-19 Vaccine Uptake Amongst Underserved Populations in East London","status":"COMPLETED","sponsor":"Queen Mary University of London","startDate":"2023-11-28","conditions":"COVID-19, Influenza, Vaccination Refusal","enrollment":5903},{"nctId":"NCT07000708","phase":"NA","title":"VITAL: Vaccination, Immunity, Time-restricted Eating, Aging and Lifestyle","status":"RECRUITING","sponsor":"Charite University, Berlin, Germany","startDate":"2025-09-10","conditions":"Vaccination, Immunosenescence, Metabolism","enrollment":24},{"nctId":"NCT07177417","phase":"PHASE4","title":"Characterizing the Human Airway Immune Response to FluMist Vaccination","status":"RECRUITING","sponsor":"Washington University School of Medicine","startDate":"2025-09-09","conditions":"Healthy Young Adults, Influenza Vaccines, Influenza Vaccine Response","enrollment":30},{"nctId":"NCT06095947","phase":"","title":"Exploration on the Quadrivalent Influenza Vaccine Immunization Schedule for Children Aged 3-8 Years","status":"COMPLETED","sponsor":"Hualan Biological Bacterin Co. Ltd.","startDate":"2021-09-15","conditions":"GCP","enrollment":652},{"nctId":"NCT06698497","phase":"NA","title":"Boosting COVID-19 Vaccination Uptake Using Wastewater Surveillance","status":"COMPLETED","sponsor":"Syracuse University","startDate":"2024-09-13","conditions":"Vaccine Uptake","enrollment":40},{"nctId":"NCT05869968","phase":"","title":"SCIVAX: Biomarkers of Immune Dysfunction and Vaccine Responsiveness in Chronic SCI","status":"RECRUITING","sponsor":"Northwell Health","startDate":"2023-03-31","conditions":"Spinal Cord Injuries, Traumatic Spinal Cord Injury, Healthy Controls","enrollment":140},{"nctId":"NCT06062056","phase":"NA","title":"Motivational Interviewing for Vaccine Uptake in Latinx Adults","status":"TERMINATED","sponsor":"Boston College","startDate":"2023-10-02","conditions":"Vaccine Hesitancy","enrollment":3698},{"nctId":"NCT05517174","phase":"PHASE4","title":"A Pragmatic Randomized Trial to Evaluate the Effectiveness of High-Dose Quadrivalent Influenza Vaccine vs. Standard-Dose Quadrivalent Influenza Vaccine in Older Adults","status":"COMPLETED","sponsor":"Tor Biering-Sørensen","startDate":"2022-09-22","conditions":"Influenza","enrollment":332438},{"nctId":"NCT04551677","phase":"PHASE4","title":"Annual Study for Collection of Serum Samples in Children and Older Adults Receiving the 2020-2021 Formulations of Fluzone Quadrivalent Vaccine and Fluzone High-Dose Quadrivalent Vaccine, Respectively","status":"COMPLETED","sponsor":"Sanofi Pasteur, a Sanofi Company","startDate":"2020-09-16","conditions":"Influenza Immunization, Healthy Volunteers","enrollment":90},{"nctId":"NCT04794829","phase":"","title":"Natural History of Systemic and Nasal Mucosal Immunity to Influenza and SARS-CoV-2 in Adults After Vaccination","status":"RECRUITING","sponsor":"National Institute of Allergy and Infectious Diseases (NIAID)","startDate":"2021-08-19","conditions":"Influenza, COVID-19","enrollment":150},{"nctId":"NCT05050318","phase":"PHASE4","title":"Annual Study for Collection of Serum Samples in Children and Older Adults Receiving the 2021-2022 Formulations of Fluzone Quadrivalent Vaccine and Fluzone High-Dose Quadrivalent Vaccine, Respectively","status":"COMPLETED","sponsor":"Sanofi Pasteur, a Sanofi Company","startDate":"2021-09-08","conditions":"Influenza Immunization, Healthy Volunteers","enrollment":90},{"nctId":"NCT06506812","phase":"PHASE4","title":"Pooled Analysis of Methodologically Harmonized Pragmatic Randomized Trials of High-Dose vs. Standard-Dose Influenza Vaccine Against Severe Clinical Outcomes","status":"COMPLETED","sponsor":"Tor Biering-Sørensen","startDate":"2025-05-31","conditions":"Influenza","enrollment":466320},{"nctId":"NCT06600490","phase":"NA","title":"Nationwide Utilization of Danish Government Electronic Letter System for Confirming the Effectiveness of Behavioral Nudges in Increasing InFLUenza Vaccine Uptake Among Adults With Chronic Disease","status":"COMPLETED","sponsor":"Tor Biering-Sørensen","startDate":"2024-10-01","conditions":"Influenza, Behavior and Behavior Mechanisms","enrollment":308978},{"nctId":"NCT01773928","phase":"PHASE3","title":"Inactivated Split Virus Seasonal Influenza Vaccine (Vero Cell-Derived)","status":"COMPLETED","sponsor":"Alachua Government Services, Inc.","startDate":"2013-01","conditions":"Influenza","enrollment":1928},{"nctId":"NCT06907667","phase":"NA","title":"Study of the Impact of Time of Vaccination on Response to Influenza Vaccine in Patients With Chronic Renal Failure","status":"RECRUITING","sponsor":"Centre Hospitalier Universitaire de Nice","startDate":"2025-09-03","conditions":"Vaccination; Infection","enrollment":735},{"nctId":"NCT07168759","phase":"NA","title":"Educational VR Game Intervention to Enhance Hygiene Practices in Primary School Children","status":"ENROLLING_BY_INVITATION","sponsor":"The Hong Kong Polytechnic University","startDate":"2023-05-02","conditions":"Healthy Participants","enrollment":2160},{"nctId":"NCT07157163","phase":"NA","title":"Nudge and Motivational Interviewing Interventions to Improve Influenza Vaccine Uptake Among Healthcare Workers in China","status":"NOT_YET_RECRUITING","sponsor":"Centers for Disease Control and Prevention, China","startDate":"2025-09-01","conditions":"Influenza Vaccine, Healthcare Workers","enrollment":4050},{"nctId":"NCT06038617","phase":"PHASE4","title":"Safety of Simultaneous mRNA COVID-19 Vaccine With Other Childhood Vaccines in Young Children","status":"COMPLETED","sponsor":"Duke University","startDate":"2023-10-30","conditions":"Fever After Vaccination, Fever, Seizures Fever","enrollment":344},{"nctId":"NCT03659773","phase":"NA","title":"Immune Response to Vaccinations in Hematopoietic Stem Cell Transplant Recipients","status":"COMPLETED","sponsor":"Hospices Civils de Lyon","startDate":"2018-04-27","conditions":"Vaccination, Hematopoietic Stem Cells","enrollment":152},{"nctId":"NCT01063608","phase":"PHASE4","title":"Study of Immune Responses After Vaccination Against Seasonal Influenza Virus and Against Influenza H1N1-v Pandemic Virus in a Medical Staff.","status":"COMPLETED","sponsor":"Institut National de la Santé Et de la Recherche Médicale, France","startDate":"2009-10","conditions":"Influenza A Virus, H1N1 Subtype","enrollment":147},{"nctId":"NCT01764152","phase":"NA","title":"Clinical Trial to Assess the Influenza Vaccination (FLUVAC 02)","status":"COMPLETED","sponsor":"Institut National de la Santé Et de la Recherche Médicale, France","startDate":"2012-12","conditions":"Adult Hospitalized","enrollment":450},{"nctId":"NCT07133802","phase":"PHASE3","title":"Clinical Trial to Evaluate the Protective Efficacy and Safety of a Nasal Spray Live Attenuated Influenza Vaccine (LAIV) in Adults Aged 18-59 Years Post-Vaccination","status":"NOT_YET_RECRUITING","sponsor":"Changchun BCHT Biotechnology Co.","startDate":"2025-08","conditions":"Prevention of Influenza","enrollment":6680},{"nctId":"NCT03748160","phase":"NA","title":"Herd Immunity and Influenza Vaccine Uptake","status":"COMPLETED","sponsor":"Finnish Institute for Health and Welfare","startDate":"2018-10-01","conditions":"Influenza, Human","enrollment":48125},{"nctId":"NCT03323112","phase":"","title":"Immune Responses in Health Care Personnel","status":"RECRUITING","sponsor":"Finnish Institute for Health and Welfare","startDate":"2017-10-18","conditions":"Influenza","enrollment":150},{"nctId":"NCT03315975","phase":"PHASE4","title":"Flu Vaccine Responses in the Setting of Melanoma Treatment","status":"ACTIVE_NOT_RECRUITING","sponsor":"University of Pennsylvania","startDate":"2017-10-20","conditions":"Viral Vaccines","enrollment":40},{"nctId":"NCT03346772","phase":"PHASE4","title":"Study of Immune Responses to Influenza Vaccination","status":"RECRUITING","sponsor":"University of Pennsylvania","startDate":"2017-10-20","conditions":"Influenza Vaccination","enrollment":75},{"nctId":"NCT07126652","phase":"NA","title":"Serological Responses to Adjuvanted Versus Non-adjuvanted Influenza Vaccines Among People With HIV: a Randomized Clinical Trial","status":"NOT_YET_RECRUITING","sponsor":"National Taiwan University Hospital","startDate":"2025-10-01","conditions":"Antibody Response","enrollment":300},{"nctId":"NCT06049927","phase":"PHASE3","title":"A Phase III Clinical Trial of Quadrivalent Influenza Vaccine in Healthy Subjects Aged 6 to 35 Months","status":"COMPLETED","sponsor":"Sinovac Biotech Co., Ltd","startDate":"2023-09-16","conditions":"Seasonal Influenza","enrollment":3300},{"nctId":"NCT05785078","phase":"","title":"Evaluation of a Flu Vaccination Program Directed at Pregnant Women Assisted at a Research Hospital in Italy.","status":"COMPLETED","sponsor":"Fondazione Policlinico Universitario Agostino Gemelli IRCCS","startDate":"2019-10-01","conditions":"Influenza Vaccination","enrollment":119},{"nctId":"NCT06026709","phase":"NA","title":"Effectiveness and Cost-effectiveness of Digital Psychological Intervention (EmoEase) in Chinese COPD Patients","status":"NOT_YET_RECRUITING","sponsor":"Peking Union Medical College","startDate":"2025-10-01","conditions":"Chronic Obstructive Pulmonary Disease, Depression, Anxiety","enrollment":1200},{"nctId":"NCT02198638","phase":"NA","title":"Effect of Influenza Vaccination of Healthcare Workers (HCW) on the Risk of Influenza in Patients Hospitalized in Short Stays Units","status":"COMPLETED","sponsor":"Hospices Civils de Lyon","startDate":"2013-12","conditions":"Patient With Influenza Like Illness","enrollment":541},{"nctId":"NCT05818124","phase":"PHASE1","title":"Efficacy and Safety of Molnupiravir in Healthy Participants Inoculated With Experimental Influenza Virus (MK-4482-019)","status":"COMPLETED","sponsor":"Merck Sharp & Dohme LLC","startDate":"2023-08-21","conditions":"Influenza Infection","enrollment":161},{"nctId":"NCT06646406","phase":"NA","title":"Evaluation of a Multilevel Intervention on Adult COVID-19 and Influenza Vaccination Rate","status":"COMPLETED","sponsor":"Mayo Clinic","startDate":"2024-10-21","conditions":"COVID-19 Immunisation, Influenza Vaccine","enrollment":114165},{"nctId":"NCT02783170","phase":"PHASE4","title":"Safety and Immunogenicity of Simultaneous Tdap and IIV in Pregnant Women","status":"COMPLETED","sponsor":"Duke University","startDate":"2016-09","conditions":"Pregnancy","enrollment":81},{"nctId":"NCT02917083","phase":"PHASE1","title":"CD30 CAR T Cells, Relapsed CD30 Expressing Lymphoma (RELY-30)","status":"RECRUITING","sponsor":"Baylor College of Medicine","startDate":"2017-05-08","conditions":"Hodgkin's Lymphoma, Non-Hodgkin Lymphoma","enrollment":60},{"nctId":"NCT06185842","phase":"NA","title":"The Effectiveness of a Lung Health Promotion Program Based on the 5A Self Management Support Model.","status":"COMPLETED","sponsor":"Selcuk University","startDate":"2023-11-21","conditions":"Pulmonary Disease","enrollment":49},{"nctId":"NCT06725927","phase":"PHASE4","title":"Vaccination Against Influenza Pre-discharge in Heart Failure","status":"ACTIVE_NOT_RECRUITING","sponsor":"Wroclaw Medical University","startDate":"2024-12-31","conditions":"Heart Failure","enrollment":200},{"nctId":"NCT06603090","phase":"NA","title":"Text4Vax: Text Message Reminders for Pediatric COVID-19 and Influenza Vaccines 2024-25 Season","status":"COMPLETED","sponsor":"Columbia University","startDate":"2024-10-02","conditions":"Influenza, COVID-19, Vaccination Hesitancy","enrollment":66147},{"nctId":"NCT06156228","phase":"NA","title":"Multilevel Intervention of COVID-19 Vaccine Uptake Among Latinos","status":"TERMINATED","sponsor":"San Diego State University","startDate":"2024-03-06","conditions":"Vaccine Hesitancy","enrollment":238},{"nctId":"NCT05801978","phase":"PHASE4","title":"Durability of Vaccine Responses","status":"RECRUITING","sponsor":"Emory University","startDate":"2023-04-11","conditions":"Vaccine Response","enrollment":66}],"_emaApprovals":[],"_faersSignals":[],"_approvalHistory":[],"publicationCount":12437,"rwe":[],"genericFilers":[],"relatedDrugs":[],"labelChanges":[],"biosimilarFilings":[],"pricing":[],"formularyStatus":[],"manufacturing":[],"companionDiagnostics":[],"competitors":[],"timeline":[],"patents":[],"ownershipHistory":[],"trials":[],"biosimilars":[],"latestUpdates":[],"references":[],"tags":[],"ecosystem":[],"genericManufacturerList":[],"offLabel":[],"developmentCodes":[],"aliases":["Vaxigrip by Sanofi Pasteur","FluBlok","Fluzone","rHA","rHA0"],"phase":"marketed","status":"active","brandName":"influenza vaccination","genericName":"influenza vaccination","companyName":"Assistance Publique - Hôpitaux de Paris","companyId":"assistance-publique-h-pitaux-de-paris","modality":"Biologic","firstApprovalDate":"","aiSummary":"Influenza vaccination stimulates the immune system to produce antibodies and cellular immunity against circulating influenza virus strains. Used for Prevention of seasonal influenza in adults and children, Reduction of influenza-related morbidity and mortality in high-risk populations.","enrichmentLevel":3,"visitCount":0,"trialStats":{"total":1,"withResults":0},"verificationStatus":"verified","dataCompleteness":{"mechanism":true,"indications":true,"safety":true,"trials":true,"score":4}}