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Showing 1–24 of 72 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Influenza Prophylaxis Clear all
Completed Phase 1 Interventional

An Open-Label, Randomized Phase I Study in Healthy Adults of the Safety and Immunogenicity of Prime-Boost Intervals With Monovalent Influenza Subunit Virion (H5N1) Vaccine, A/Indonesia/05/2005 (Sanofi Pasteur, Inc.) Administered Alone or Following Re...

NCT01086657
View directory record Official record
Conditions
Influenza A Virus, H5N1 Subtype
Interventions
VRC-AVIDNA036-00-VP, Monovalent Influenza Subunit Virion (Inactive H5N1) Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 4 Interventional Results available

A Study of Oseltamivir (Tamiflu) for the Seasonal Prophylaxis of Influenza in Immunocompromised Participants

NCT00412737
View directory record Official record
Conditions
Influenza
Interventions
Oseltamivir, Placebo
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
1 Year and older
Enrollment
477 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
34
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Stanford, California + 28 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2016 · Synced Jul 23, 2026, 5:17 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Safety Study of Recombinant Influenza Vaccine for Prevention

NCT02015494
View directory record Official record
Conditions
Influenza
Interventions
VAX2012Q
Biological
Lead sponsor
VaxInnate Corporation
Industry
Eligibility
18 Years to 40 Years
Enrollment
316 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
4
States / cities
Lenexa, Kansas • Rochester, New York • Mt. Pleasant, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2015 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety, Reactogenicity and Immunogenicity of Flublok Quadrivalent (Recombinant Influenza Vaccine,Seasonal Formulation)

NCT01959945
View directory record Official record
Conditions
Influenza
Interventions
Flublok® Quadrivalent Influenza Virus Vaccine, Fluarix Quadrivalent® Influenza Virus Vaccine
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
6 Years to 17 Years
Enrollment
219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Auburn, Maine
Source: ClinicalTrials.gov public record
Updated Sep 22, 2016 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Three Dosage Levels of Swine Influenza Vaccine in Children Ages 3 to <9 Years, Adolescents 9 to <18 Years, Adults 18 to <65 Years and Elderly 65 Years and Older.

NCT01855945
View directory record Official record
Conditions
Prophylaxis of A/H3N2v Influenza
Interventions
Swine Influenza
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
3 Years to 92 Years
Enrollment
627 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
11
States / cities
Redding, California • Sacramento, California • Lenexa, Kansas + 8 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2016 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response to a Live H7N9 Influenza Virus Vaccine Followed by an Inactivated H7N9 Influenza Virus Vaccine, Given at Varying Intervals

NCT02151344
View directory record Official record
Conditions
Influenza A Virus, H7N9 Subtype
Interventions
H7N9 A/Anhui/13 ca influenza virus vaccine, Inactivated subvirion H7N9 vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 29, 2015 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to Recombinant Live-Attenuated Influenza H6N1 Virus Vaccine Vaccine

NCT00734175
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H6N1 Teal HK 97/AA ca recombinant vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 6, 2009 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety of 3 New 6:2 Influenza Virus Reassortants in Adults

NCT01579916
View directory record Official record
Conditions
Influenza
Interventions
Trivalent Influenza Virus Vaccine, Placebo
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
303 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
3
States / cities
Miami, Florida • Stockbridge, Georgia • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 2, 2014 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Clinical Trial Assessing the Immunologic Response to a Influenza Vaccine Delivered Using an Jet Injection Device or a Needle Syringe

NCT01644149
View directory record Official record
Conditions
Influenza Prophylaxis
Interventions
Stratis Jet Injector, Needle and Syringe, 2011-2012 Fluzone trivalent inactivated influenza vaccine
Device · Biological
Lead sponsor
PharmaJet, Inc.
Industry
Eligibility
18 Years to 59 Years
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 19, 2019 · Synced Jul 23, 2026, 5:17 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Bifidobacterium Lactis HN019 Supplementation for Prevention of Influenza Infection in Healthy Adults

NCT01258842
View directory record Official record
Conditions
Influenza
Interventions
Bifidobacterium lactis HN019, Placebo
Dietary Supplement
Lead sponsor
Fonterra Research Centre
Industry
Eligibility
18 Years to 60 Years
Enrollment
426 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
2
States / cities
Coral Gables, Florida • Rochester, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 12, 2010 · Synced Jul 23, 2026, 5:17 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Evaluating the Dose, Safety, Tolerability, and Immunogenicity of Mosaic Hexavalent Influenza Vaccine VRCFLUMOS0116-00-VP (FluMos-v2) With and Without ALFQ Adjuvant in Healthy Adults

NCT06863142
View directory record Official record
Conditions
Influenza Prevention, Seasonal Influenza
Interventions
VRC-FLUMOS0116-00-VP, ALFQ
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 1 Interventional

Vaccine for Prevention of Bird Flu

NCT00776711
View directory record Official record
Conditions
Influenza, Human
Interventions
Monovalent Influenza Subunit Virion (H5N1) Vaccine, A/Indonesia/05/2005, VRC-AViDNA036-00-VP
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of 9-valent Extraintestinal Pathogenic Escherichia Coli Vaccine (ExPEC9V) and High-dose Quadrivalent Influenza Vaccine, With and Without Co-administration, in Adults Aged 65 Years or Older

NCT06134804
View directory record Official record
Conditions
Invasive Extraintestinal Pathogenic Escherichia Coli Disease (IED) Prevention
Interventions
ExPEC9V, Placebo, HD quadrivalent influenza vaccine
Biological
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
65 Years and older
Enrollment
959 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
24
States / cities
Huntsville, Alabama • Mobile, Alabama • San Diego, California + 19 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Immunogenicity of Seasonal Influenza by Delivery Directly to Ileum

NCT01761123
View directory record Official record
Conditions
Seasonal Influenza
Interventions
VXA-A1.1
Biological
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years · Male only
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Dec 9, 2014 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Feasibility of Cocooning Immunization Strategy With Influenza Vaccine

NCT00570037
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza vaccine
Biological
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
544 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
2
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 23, 2013 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Bird Flu Virus Vaccine (H5N1) in Healthy Adults

NCT00347672
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H5N1 (6-2) AA ca Recombinant (A/VietNam/1203/2004 x A/AnnArbor/6/60/ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 20, 2008 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Two Trivalent Subunit Influenza Vaccines in Healthy Adult Subjects

NCT02256488
View directory record Official record
Conditions
Prophylaxis: Influenza
Interventions
TIVc_LOT A, TIVc_LOT B, TIVc_LOT C, TIVf
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
18 Years to 49 Years
Enrollment
1,561 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
24
States / cities
Anaheim, California • Redding, California • San Diego, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2019 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immune Response to Recombinant Live-Attenuated Influenza H2N2 Virus Vaccine

NCT00722774
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H2N2 1960 AA ca recombinant vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 9, 2008 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Safety of 3 New 6:2 Influenza Virus Reassortants in Adults

NCT01859143
View directory record Official record
Conditions
Influenza, Healthy
Interventions
Trivalent Influenza Vaccine, Placebo
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
3
States / cities
Miami, Florida • Stockbridge, Georgia • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 9, 2014 · Synced Jul 23, 2026, 5:17 PM EDT
Completed No phase listed Observational

Pharmacokinetics of Understudied Drugs Administered to Children Per Standard of Care

NCT01431326
View directory record Official record
Conditions
Adenovirus, Anesthesia, Anxiety, Anxiolysis, Autism, Autistic Disorder, Bacterial Meningitis, Bacterial Septicemia, Benzodiazepine, Bipolar Disorder, Bone and Joint Infections, Central Nervous System Infections, Convulsions, Cytomegalovirus Retinitis, Early-onset Schizophrenia Spectrum Disorders, Epilepsy, General Anesthesia, Gynecologic Infections, Herpes Simplex Virus, Infantile Hemangioma, Infection, Inflammation, Inflammatory Conditions, Intra-abdominal Infections, Lower Respiratory Tract Infections, Migraines, Pain, Pneumonia, Schizophrenia, Sedation, Seizures, Skeletal Muscle Spasms, Skin and Skin-structure Infections, Treatment-resistant Schizophrenia, Urinary Tract Infections, Withdrawal, Sepsis, Gram-negative Infection, Bradycardia, Cardiac Arrest, Cardiac Arrhythmia, Staphylococcal Infections, Nosocomial Pneumonia, Neuromuscular Blockade, Methicillin Resistant Staphylococcus Aureus, Endocarditis, Neutropenia, Headache, Fibrinolytic Bleeding, Pulmonary Arterial Hypertension, CMV Retinitis, Hypertension, Chronic Kidney Diseases, Hyperaldosteronism, Hypokalemia, Heart Failure, Hemophilia, Heavy Menstrual Bleeding, Insomnia
Interventions
The POPS study is collecting PK data on children prescribed the following drugs of interest per standard of care:
Drug
Lead sponsor
Daniel Benjamin
Other
Eligibility
Up to 21 Years
Enrollment
3,520 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
43
States / cities
Anchorage, Alaska • Little Rock, Arkansas • La Jolla, California + 37 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2023 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Not applicable Interventional Results available

The Effect of Fact Versus Myth Messages on Receipt of Influenza Vaccination

NCT01009645
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Fact Only Education Message, Fact and Myth Educational Message, Fact, Myth, Why Educational Message, Control Educational Message
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
50 Years and older
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 29, 2023 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Prospective Study to Evaluate the Safety of a New Trivalent Intranasal Influenza Vaccine

NCT00677820
View directory record Official record
Conditions
Influenza
Interventions
Trivalent influenza virus vaccine, Placebo
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
3
States / cities
Daytona Beach, Florida • Portland, Oregon • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 21, 2010 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study of CD388 for the Prevention of Influenza in Subjects Not at Risk for Influenza Complications

NCT06609460
View directory record Official record
Conditions
Influenza
Interventions
CD388 Injection, Placebo
Combination Product
Lead sponsor
Cidara Therapeutics Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years to 63 Years
Enrollment
5,071 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
56
States / cities
Anniston, Alabama • Cullman, Alabama • Tempe, Arizona + 51 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Jul 23, 2026, 5:17 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of DNA Vaccine With Electroporation for the Prevention of Disease Caused by H1 and H5 Influenza Virus

NCT01405885
View directory record Official record
Conditions
Healthy
Interventions
INO-3605, INO-3609, INO-3401, INO-3605 AND INO-3609, INO-3510, Seasonal Influenza vaccine
Biological
Lead sponsor
Inovio Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
3
States / cities
Miami, Florida • Overland Park, Kansas • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 2, 2014 · Synced Jul 23, 2026, 5:17 PM EDT