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ClinicalTrials.gov public records Last synced Oct 12, 2026, 7:00 PM EDT

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Showing 121–144 of 929 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Orthomyxoviridae Infection Clear all
Not listed No phase listed Observational

National Vaccine Adverse Event Reporting Survey and Etiology

NCT05095844
View directory record Official record
Conditions
COVID-19, Vaccine Adverse Reaction, Vaccine Reaction, Vaccine or Biological Substance, Unspecified Causing Adverse Effects in Therapeutic Use, Corona Virus Infection, Blood Clot, Thrombocytopenia, Neuritis, Vasculitis, Influenza, Guillain-Barré, GWAS, Genetic Sequencing
Interventions
vaccinated
Biological
Lead sponsor
Neuroganics LLC
Industry
Eligibility
5 Years to 99 Years
Enrollment
100,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Northglenn, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 18, 2022 · Synced Oct 12, 2026, 7:00 PM EDT
Recruiting Not applicable Interventional

The Effects of Endotracheal Suctioning on Pain and Serum Markers

NCT06692400
View directory record Official record
Conditions
Intensive Care Unit ICU, Intubation, Critical Illness, Mechanical Ventilation, Pain Measurement, Pain, Procedural, Oxidative Stress, Hypoxia, Biomarkers / Blood, Adult, Uric Acid, Sepsis, COVID, Influenza, Pneumonia
Interventions
endotracheal tube suctioning
Procedure
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jul 10, 2026 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

First-in-Human Clinical Trial of a Mosaic Quadrivalent Influenza Vaccine Compared With a Licensed Inactivated Seasonal QIV in Healthy Adults

NCT04896086
View directory record Official record
Conditions
Influenza, Seasonal Influenza
Interventions
VRC-GENADJ0110-AP-NV (Adjuplex), Flucelvax, VRC-FLUMOS0111-00-VP (FluMos-v1)
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 27, 2025 · Synced Oct 12, 2026, 7:00 PM EDT
Active, not recruiting Phase 2 Interventional

High vs. Standard Dose Influenza Vaccine in Adult SOT Recipients

NCT04613206
View directory record Official record
Conditions
Immunization; Infection, Transplantation Infection, Influenza, Solid Organ Transplant
Interventions
High Dose Quadrivalent Inactivated Influenza Vaccine, Standard Dose Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
396 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Learn About Flu and COVID-19 Vaccine Responses in Healthy People

NCT06683352
View directory record Official record
Conditions
Influenza,Human, COVID-19
Interventions
Investigational Influenza Vaccine, COVID-19 Vaccine, Investigational Influenza/COVID-19 Vaccine, Licensed Influenza Vaccine 1, Licensed Influenza Vaccine 2, Placebo
Biological · Combination Product · Other
Lead sponsor
BioNTech SE
Industry
Eligibility
18 Years and older
Enrollment
1,353 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
22
States / cities
Lake Forest, California • San Diego, California • Walnut Creek, California + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Promoting Altruism to Enhance Vaccine Acceptance

NCT04568590
View directory record Official record
Conditions
Vaccine Refusal
Interventions
educational intervention
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
Not listed
Enrollment
510 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 12, 2024 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Senescent Immunity in Elders and Vaccine Responses (SILVER)

NCT04077424
View directory record Official record
Conditions
Flu Vaccine
Interventions
Fluzone-High Dose Quadrivalent, Fluad, Flublock
Biological
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
65 Years to 125 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 12, 2022 · Synced Oct 12, 2026, 7:00 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

A Case Control Study of the Effectiveness of Q/LAIV Versus Inactivated Influenza Vaccine and No Vaccine in Subjects 2-17 Years of Age

NCT01997450
View directory record Official record
Conditions
Influenza Vaccine Effectiveness
Interventions
Not listed
Lead sponsor
MedImmune LLC
Industry
Eligibility
2 Years to 17 Years
Enrollment
4,121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
8
States / cities
Gainesville, Florida • Bloomington, Minnesota • Winston-Salem, North Carolina + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 10, 2025 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

University of Wisconsin Meditation & Exercise Cold Study

NCT01654289
View directory record Official record
Conditions
Acute Respiratory Infection
Interventions
Mindfulness Meditation, Exercise
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
30 Years to 69 Years
Enrollment
413 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 7, 2018 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Prophylactic Antipyretics on Immune Responses and Fever After 2014-2015 and 2015-2016 Inactivated Influenza Vaccine

NCT02212990
View directory record Official record
Conditions
Fever
Interventions
Acetaminophen Arm, Placebo Arm, Ibuprofen Arm
Other
Lead sponsor
Duke University
Other
Eligibility
6 Months to 47 Months
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 7, 2018 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 1 Interventional

Influenza A H3N2 Human Challenge Study in Healthy Adult Volunteers

NCT02594189
View directory record Official record
Conditions
Determine Minimally to Moderately Infective Dose (MMID) of Influenza A H3N2
Interventions
Live recombinantly derived A/Bethesda/MM1/H3N2 virus
Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 3, 2019 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Comparison of the Immunogenicity, Safety and Reactogenicity of FluBlok, To a Licensed Vaccine In Elderly Adults

NCT00395174
View directory record Official record
Conditions
Influenza
Interventions
Influenza Vaccination
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
65 Years and older
Enrollment
870 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
7
States / cities
Baltimore, Maryland • Rochester, Minnesota • Shrewsbury, New Jersey + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 17, 2009 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Reactogenicity, Safety and Immunogenicity of GlaxoSmithKline (GSK) Biologicals' Investigational Supra-seasonal Universal Influenza Vaccines - Inactivated (SUIVs) (GSK3816302A) in Healthy Adults Aged 18 to 39 Years

NCT03275389
View directory record Official record
Conditions
Influenza, Human
Interventions
D-SUIV cH8/1N1+AS03, D-SUIV cH5/1N1+AS03, D-SUIV cH11/1N1+AS03, D-SUIV cH8/1N1+AS01, D-SUIV cH5/1N1+AS01, D-SUIV cH11/1N1+AS01, D-SUIV cH8/1N1, D-SUIV cH5/1N1, D-SUIV cH11/1N1, Placebo, Fluarix Quadrivalent
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 39 Years
Enrollment
470 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
5
States / cities
South Miami, Florida • Wichita, Kansas • Rochester, New York + 2 more
Source: ClinicalTrials.gov public record
Updated May 7, 2021 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate Safety and Immunogenicity of a Pandemic Flu H5 mRNA Vaccine in Healthy Adults Aged 18 Years and Older

NCT06727058
View directory record Official record
Conditions
Influenza Immunization
Interventions
Pandemic flu H5 mRNA vaccine, Placebo
Biological · Other
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
276 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
14
States / cities
La Mesa, California • DeLand, Florida • Lakeland, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Oct 12, 2026, 7:00 PM EDT
Recruiting Phase 3 Interventional

A Surveillance Study of Susceptibility to Baloxavir Marboxil in Pediatric Participants With Influenza and Transmission of Influenza to Household Contacts

NCT06094010
View directory record Official record
Conditions
Influenza
Interventions
Baloxavir Marboxil
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
3 Weeks to 11 Years
Enrollment
1,100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
28
States / cities
Birmingham, Alabama • Harrisburg, Arkansas • Miami, Florida + 23 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Inactivated Influenza A/H5N1 Vaccine in the Elderly

NCT00230750
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/H5N1 Vaccine, Placebo
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years and older
Enrollment
261 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
4
States / cities
Torrance, California • Rochester, New York • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2013 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of VGX-3400X, H5N1 Avian Influenza Virus DNA Plasmid + Electroporation in Healthy Adults

NCT01142362
View directory record Official record
Conditions
Healthy
Interventions
VGX-3400X
Biological
Lead sponsor
Inovio Pharmaceuticals
Industry
Eligibility
18 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
2
States / cities
Overland Park, Kansas • Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 13, 2017 · Synced Oct 12, 2026, 7:00 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Zoonotic Influenza Infections of Swine Origin at Ohio Agricultural Fairs

NCT02124096
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
8 Years and older
Enrollment
336 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 19, 2019 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 4 Interventional

Adjuvanted Influenza Vaccination in U.S. Nursing Homes

NCT02882100
View directory record Official record
Conditions
Influenza, Influenza-like Illness
Interventions
adjuvanted trivalent influenza vaccine, trivalent influenza vaccine
Biological
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
65 Years and older
Enrollment
823 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 15, 2023 · Synced Oct 12, 2026, 7:00 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Home Testing of Respiratory Illness

NCT04245800
View directory record Official record
Conditions
Influenza -Like Illness, Influenza A, Influenza Type B, Respiratory Viral Infection, Respiratory Tract Infections
Interventions
Not listed
Lead sponsor
Evidation Health
Industry
Eligibility
18 Years and older
Enrollment
5,233 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
San Mateo, California
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Study of Immune Responses to Influenza Vaccination

NCT03346772
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Influenza vaccination
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 12, 2026, 7:00 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Screening for LID Clinical Studies Unit Healthy Volunteer Protocols

NCT01386424
View directory record Official record
Conditions
Zika, Influenza
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity Study of Adenovirus-vectored, Intranasal Pandemic Influenza Vaccine.

NCT00755703
View directory record Official record
Conditions
Influenza A Subtype H5N1 Infection
Interventions
Pandemic Influenza Vaccine, Placebo
Biological
Lead sponsor
Altimmune, Inc.
Industry
Eligibility
19 Years to 49 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced Oct 12, 2026, 7:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cell-Mediated Immune Responses to Influenza A/H5N1 Vaccine

NCT00311727
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/H5N1
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
339 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
3
States / cities
Baltimore, Maryland • Rochester, New York • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 16, 2013 · Synced Oct 12, 2026, 7:00 PM EDT