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ClinicalTrials.gov public records Last synced Sep 30, 2026, 4:14 AM EDT

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Showing 25–48 of 605 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Influenza A Virus Clear all
Completed Phase 1Phase 2 Interventional Results available

TCAD vs. Monotherapy for Influenza A in Immunocompromised Patients

NCT00867139
View directory record Official record
Conditions
Influenza
Interventions
TCAD, Zanamivir or Oseltamivir, Open label treatment with TCAD
Drug · Other
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
1 Year and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
2
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 15, 2013 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immunogenicity of GlaxoSmithKline Biologicals' Influenza Vaccine GSK3206641A Administered in Adults 18 to 64 Years of Age and 65 Years of Age and Older

NCT04789577
View directory record Official record
Conditions
Influenza, Human
Interventions
FLU-Q-PAN H7N9 Formulation 1, FLU-Q-PAN H7N9 Formulation 2, FLU-Q-PAN H7N9 Formulation 3, AS03B, AS03A, Placebo
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
833 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
8
States / cities
Stockbridge, Georgia • Meridian, Idaho • Cary, North Carolina + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 10, 2023 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Clinical Study to Evaluate the Immunogenicity and Safety of an Adjuvanted Quadrivalent Influenza Vaccine Compared With a Licensed Quadrivalent Vaccine in Adults 50 to 64 Years of Age

NCT05044195
View directory record Official record
Conditions
Influenza, Human
Interventions
aQIV, Comparator QIV
Biological
Lead sponsor
Seqirus
Industry
Eligibility
50 Years to 64 Years
Enrollment
2,044 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
12
States / cities
Mobile, Alabama • Tempe, Arizona • Atlantis, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 3 Interventional Results available

A Study of Intravenously Administered Tamiflu (Oseltamivir) in Patients Over 13 Years of Age With Influenza

NCT01050257
View directory record Official record
Conditions
Influenza
Interventions
Oseltamivir IV, Oseltamivir Oral
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
13 Years and older
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
56
States / cities
Birmingham, Alabama • Montgomery, Alabama • Phoenix, Arizona + 47 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2013 · Synced Sep 30, 2026, 4:14 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Elderberry for Immune Support

NCT05435144
View directory record Official record
Conditions
Upper Respiratory Tract Infection, COVID-19, Flu, Flu Like Illness, Cold
Interventions
Elderberry, Placebo
Dietary Supplement · Other
Lead sponsor
Nutraceuticals Research Institute
Other
Eligibility
20 Years to 65 Years
Enrollment
420 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Franklin, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 12, 2022 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 2 Interventional Results available

Safety of and Immune Response to an H1N1 Influenza Virus Vaccine in HIV Infected Children and Youth

NCT00992836
View directory record Official record
Conditions
HIV Infections, H1N1 Influenza Virus
Interventions
Influenza A (H1N1) 2009 monovalent vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
4 Years to 25 Years
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
35
States / cities
Birmingham, Alabama • Alhambra, California • La Jolla, California + 25 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2021 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Inactivated Influenza Vaccine Delivered by Microneedle Patch or by Hypodermic Needle

NCT02438423
View directory record Official record
Conditions
Influenza
Interventions
Inactivated influenza vaccine, Placebo
Biological · Other
Lead sponsor
Mark Prausnitz
Other
Eligibility
18 Years to 49 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 5, 2019 · Synced Sep 30, 2026, 4:14 AM EDT
Completed No phase listed Observational

Residual Sample Collection for Respiratory Viral Panel

NCT02049918
View directory record Official record
Conditions
Respiratory Viral Illnesses: Influenza A/B, RSV, Adenovirus
Interventions
Not listed
Lead sponsor
GenMark Diagnostics
Industry
Eligibility
Not listed
Enrollment
1,487 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 28, 2015 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Not applicable Interventional Results available

Encouraging Flu Vaccination Among High-Risk Patients Identified by ML

NCT04323137
View directory record Official record
Conditions
Influenza, Vaccination, Health Promotion, Health Behavior, Risk Reduction
Interventions
Risk reduction, Medical records-based recommendation, Algorithm-based recommendation
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
17 Years and older
Enrollment
117,649 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 30, 2024 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 2 Interventional Results available

Comparing the Efficacy, Safety, and Tolerability of Combination Antivirals (Amantadine, Ribavirin, Oseltamivir) Versus Oseltamivir for the Treatment of Influenza in Adults at Risk for Complications

NCT01227967
View directory record Official record
Conditions
Influenza
Interventions
Amantadine, Ribavirin, Oseltamivir, Oseltamivir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
881 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
69
States / cities
Birmingham, Alabama • Chandler, Arizona • Glendale, Arizona + 58 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A/H5N1in Adult - Aventis

NCT00115986
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/H5N1 Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
452 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
3
States / cities
Torrance, California • Baltimore, Maryland • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 23, 2013 · Synced Sep 30, 2026, 4:14 AM EDT
Completed No phase listed Observational

"Quidel Reader Influenza A + B Test 510(k) and CLIA Waiver Field Study"

NCT01309568
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
Quidel Corporation
Industry
Eligibility
Not listed
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
16
States / cities
Carlsbad, California • Panorama City, California • San Diego, California + 13 more
Source: ClinicalTrials.gov public record
Updated May 12, 2011 · Synced Sep 30, 2026, 4:14 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Digital Storytelling to Reduce Pediatric Influenza Vaccination Disparities

NCT06274359
View directory record Official record
Conditions
Influenza
Interventions
Digital storytelling
Behavioral
Lead sponsor
Denver Health and Hospital Authority
Other
Eligibility
18 Years to 90 Years
Enrollment
398 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Trial to Evaluate the Immunogenicity and Safety of Panblok® (H7 rHA) in Healthy Adults Aged 18 and Older

NCT02464163
View directory record Official record
Conditions
Influenza
Interventions
Panblok, rHA adjuvant
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
18 Years and older
Enrollment
407 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
9
States / cities
Mobile, Alabama • DeLand, Florida • Savannah, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 26, 2017 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Comparison of Inactivated and Live, Attenuated Influenza Vaccine in Children 5-9 Years of Age-Year 3 Amendment

NCT00138385
View directory record Official record
Conditions
Influenza
Interventions
FluMist, Fluzone
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
5 Years to 9 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Sep 30, 2026, 4:14 AM EDT
Active, not recruiting Not applicable Interventional

Comparison of Nasopharyngeal Swab v. Nasopharyngeal Saline Wash or Saliva Collection in Testing for Respiratory Viruses

NCT05864118
View directory record Official record
Conditions
Respiratory Tract Infections
Interventions
Respiratory pathogen panel PCR test, COVID-19 antibody test
Diagnostic Test
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Sep 30, 2026, 4:14 AM EDT
Completed No phase listed Observational Results available

This Study Intends to Describe the Characteristics of Patients Given the Pfizer-BioNTech Bivalent mRNA COVID-19 Vaccine and Any Commercially Available Influenza Vaccines at the Same Time Versus at Different Times.

NCT05858450
View directory record Official record
Conditions
Influenza, Human, COVID-19
Interventions
Comirnaty, Quadrivalent Influenza Vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
3,442,996 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 20, 2024 · Synced Sep 30, 2026, 4:14 AM EDT
Terminated Phase 1 Interventional

Total Marrow and Total Lymph Node Irradiation, Fludarabine, and Melphalan Followed By Donor Stem Cell Transplant in Treating Patients With Advanced Hematological Cancer That Has Not Responded to Treatment

NCT00800150
View directory record Official record
Conditions
Chronic Myeloproliferative Disorders, Leukemia, Lymphoma, Multiple Myeloma and Plasma Cell Neoplasm, Myelodysplastic Syndromes, Myelodysplastic/Myeloproliferative Neoplasms
Interventions
fludarabine phosphate, melphalan, nonmyeloablative allogeneic hematopoietic stem cell transplantation, intensity-modulated radiation therapy, tomotherapy, total marrow irradiation, total nodal irradiation
Drug · Procedure · Radiation
Lead sponsor
City of Hope Medical Center
Other
Eligibility
16 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Jun 8, 2015 · Synced Sep 30, 2026, 4:14 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

T and B Cell Response to Avian Flu Vaccine

NCT00337896
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 16, 2013 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A/H5N1 Virus-Like Particle Antigen Dose Ranging Study With Adjuvant 1

NCT01594320
View directory record Official record
Conditions
Influenza (Pandemic)
Interventions
Monovalent Avian Influenza VLP (H5N1), Monovalent Avian Influenza VLP (H5N1); Adjuvant, Saline placebo
Biological
Lead sponsor
Novavax
Industry
Eligibility
18 Years to 49 Years
Enrollment
333 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
5
States / cities
Anaheim, California • Miami, Florida • Pembroke Pines, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2014 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Probiotics (L. Helveticus, B. Longum, and B. Bifidum) on Immune Function and Digestive Health

NCT01709825
View directory record Official record
Conditions
Healthy
Interventions
Probiotic- Bifidobacterium Bifidum, Sugar Pill, Probiotic- Lactobacillus helveticus, Probiotic- Bifidobacterium longum ss. Infantis R0033
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
583 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 29, 2015 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immunogenicity of Seasonal Influenza Vaccine and an Adenovirus Serotype 26- Based Vaccine Encoding for the Respiratory Syncytial Virus Pre-fusion F Protein (Ad26.RSV.preF), With and Without Co-administration, in Adults Aged 60 Years and Older in Stable Health

NCT03339713
View directory record Official record
Conditions
Healthy
Interventions
Ad26.RSV.preF, Fluarix, Placebo
Biological
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
60 Years and older
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Mt. Pleasant, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Phase 2 Study to Evaluate Immune Responses of FluMist®

NCT00461981
View directory record Official record
Conditions
Influenza Vaccine
Interventions
TIV, Trivalent Inactivated Influenza Virus Vaccine, FluMist, Influenza Virus Vaccine Live
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
12 Months to 35 Months
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
19
States / cities
Jonesboro, Arkansas • Little Rock, Arkansas • Anaheim, California + 16 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2021 · Synced Sep 30, 2026, 4:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study Comparing the Immune Response of Fluarix and Fluzone Influenza Vaccines

NCT00197288
View directory record Official record
Conditions
Influenza
Interventions
Influenza
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
1,847 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
15
States / cities
Clearwater, Florida • Evansville, Indiana • Baltimore, Maryland + 12 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Sep 30, 2026, 4:14 AM EDT