Influenza Clinical Trials

Recruiting influenza studies with sites across the US, sourced from ClinicalTrials.gov and refreshed daily. Free to join — find one near you below.

Clinical trials study new ways to prevent, detect, or treat influenza. Joining one can give you access to investigational treatments and close monitoring by a specialist research team — at no cost — while helping advance care for others. Below are recruiting influenza studies with sites across the US; use the location tools to find ones near you.

What to expect

Screening first. The study team reviews your eligibility before anything else — there's no obligation to continue.
Informed consent. You'll get a full explanation of the study, its potential risks and benefits, and can withdraw at any time.
No cost to you. Study visits, tests, and the investigational treatment are covered; many studies reimburse travel.

Recruiting influenza trials

Within

H1ssF Flu Vaccine Clinical Trial

for Influenza

1 site in Minneapolis

Sponsor: University of Minnesota

Sex: All·Age: 18 - 70·Accepts healthy volunteers

Code: NCT07340047·Phase 1

Longitudinal Deep Phenotyping of Central Mechanisms in Dysosmia: A Pilot Study Using Electrobulbogram (EBG), Functional MRI (fMRI), and Diffusion-Weighted Imaging (DWI)

for Respiratory Tract Infection

1 site in Bethesda

Sponsor: National Institute on Deafness and Other Communication Disorders (NIDCD)

Sex: All·Age: 18 - 99·Accepts healthy volunteers

Code: NCT07149428

BPL-1357 Against H1N1 Influenza Virus Challenge

for Influenza

2 sites incl. Bethesda

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Sex: All·Age: 18 - 55·Accepts healthy volunteers

Code: NCT07215858·Phase 2

Apply to this trial

Smart Analysis and Decision-Making for Emerging Infectious Diseases

for Emerging Infectious Diseases

Sponsor: Peking University

Sex: All·Age: 18+

Code: NCT07678619

Safety and Immunogenicity of Chimeric Hemagglutinin mRNA Vaccine Candidates

for Influenza

1 site in Baltimore

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Sex: All·Age: 18 - 59·Accepts healthy volunteers

Code: NCT07703514·Phase 1

Phase 2a Study of the Efficacy and Safety of TRX-100 in a Human Influenza A Challenge Model

for Influenza

Sponsor: Traws Pharma, Inc.

Sex: All·Age: 18 - 55·Accepts healthy volunteers

Code: NCT07503405·Phase 2

Light-based Immunomodulation for Guarding Against Human Respiratory Tract Infections

for COVID-19 Respiratory Infection

Sponsor: David Moss

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT07610967

Patient-Centered Practical Vaccine Talk For Busy Clinicians

for Influenza

1 site in Worcester

Sponsor: University of Massachusetts, Worcester

Sex: All·Age: 18+

Code: NCT07651761

Study to Investigate the Efficacy and Safety of Apomivir®

for Influenza

Sponsor: Far East Bio-Tec Co., Ltd

Sex: All·Age: 20 - 65

Code: NCT01677689·Phase 2

Virological Surveillance of Acute Respiratory Infection in Primary Health Care in Metropolitan France

for Respiratory Tract Infections (RTI)

Sponsor: Institut National de la Santé Et de la Recherche Médicale, France

Sex: All·Age: All ages

Code: NCT07599449

Noseguard for Prevention of Respiratory Infections in Real-World Use

for Respiratory Infection Virus

Sponsor: Daewoong Pharmaceutical Co. LTD.

Sex: All·Age: 19+

Code: NCT07516977

A Study on Mucosal Specific IgA Immunokinetics After Administration of Nasal Spray Live Attenuated Influenza Vaccine

for Influenza

Sponsor: Changchun BCHT Biotechnology Co.

Sex: All·Age: 3 - 17·Accepts healthy volunteers

Code: NCT07545564·Phase 4

Effect of Oral Supplement on Influenza Vaccine Long-term Response

for Influenza

Sponsor: Tsinghua University

Sex: All·Age: 60 - 70·Accepts healthy volunteers

Code: NCT07357467

A Study of mRNA-1018-H5 Pandemic Influenza Vaccine in Healthy Adults

for Influenza

10 sites incl. San Bernardino

Sponsor: ModernaTX, Inc.

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT07496450·Phase 3

Apply to this trial

Phase 1/2 Study of a Plant-Based Seasonal Recombinant Trivalent VLP Influenza Vaccine

for Influenza

Sponsor: Aramis Biotechnologies Inc.

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT07291635·Phase 1, Phase 2

Apply to this trial

A Phase I Trial to Evaluate the Safety and Immunogenicity of Influenza Virus Split Vaccine (Adjuvant)

for Influenza

Sponsor: Changchun BCHT Biotechnology Co.

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT07349017·Phase 1

Adaptive RCT of Corticosteroids for Severe Influenza Pneumonia in Adults

for Influenza

Sponsor: Qingyuan Zhan

Sex: All·Age: 18+

Code: NCT07351500·Phase 3

Enhancing Maternal Vaccine Knowledge and Uptake: The InTroDuce-Programme Trial

for Vaccination Uptake

Sponsor: Universiti Putra Malaysia

Sex: Female·Age: 18+·Accepts healthy volunteers

Code: NCT06815250

Apply to this trial

Phase Ⅱ Clinical Trial of Influenza Virus Split Vaccine for Individuals Aged 60 Years and Above

for Influenza

Sponsor: Shanghai Institute Of Biological Products

Sex: All·Age: 60+·Accepts healthy volunteers

Code: NCT07327398·Phase 2

A Clinical Trial of Influenza Virus Split Vaccine for Individuals Aged 60 Years and Above

for Influenza

Sponsor: Shanghai Institute Of Biological Products

Sex: All·Age: 60+·Accepts healthy volunteers

Code: NCT07302256·Phase 1

Apply to this trial

Immune Defense Protein Impact On Respiratory Immune Outcomes

for Upper Respiratory Disease

1 site in Los Angeles

Sponsor: Quantec Ltd

Sex: All·Age: 60+·Accepts healthy volunteers

Code: NCT07431840

Apply to this trial

Influenza Vaccination Strategy for Patients With Hematologic Malignancy

for Hematologic Neoplasms

Sponsor: Asan Medical Center

Sex: All·Age: 19+

Code: NCT07485855·Phase 3

Apply to this trial

Suraxavir Marboxil And Oseltamivir for Influenza Prophylaxis Under a Hospital-based Setting

for Influenza

Sponsor: Capital Medical University

Sex: All·Age: 12+

Code: NCT07236814·Phase 3

Apply to this trial

A Multicenter, Randomized, Double-blind, Placebo-controlled Phase III Clinical Study to Evaluate the Safety and Efficacy of Onradivir Tablets in Participants Aged 12 to 17 Years With Uncomplicated Influenza A.

for Influenza

Sponsor: Ruijin Hospital

Sex: All·Age: 12 - 17

Code: NCT07229547·Phase 3

Apply to this trial

Effectiveness of SMS Nudging to Increase Coverage of Influenza Vaccination Among the Elderly

for Influenza

Sponsor: Norwegian Institute of Public Health

Sex: All·Age: 65+

Code: NCT06486766

Study to Evaluate the Efficacy, Safety, and Tolerability of the Ingavirin Forte Capsules (Valenta Pharm JSC) at Different Doses in Subjects With Influenza and Other Acute Respiratory Viral Infections.

for Influenza

Sponsor: Valenta Pharm JSC

Sex: All·Age: 18 - 65

Code: NCT07420985·Phase 2

Apply to this trial

Influenza Vaccine (Split Virion), Inactivated, Quadrivalent in Pregnant Women

for Influenza

Sponsor: Sinovac Biotech Co., Ltd

Sex: Female·Age: 18 - 39·Accepts healthy volunteers

Code: NCT07211152·Phase 3

Apply to this trial

Woodsmoke Exposure, Influenza Infection, and Nasal Immunity

for Smoke Exposure

1 site in Chapel Hill

Sponsor: University of North Carolina, Chapel Hill

Sex: All·Age: 18 - 49·Accepts healthy volunteers

Code: NCT06841913·Phase 4

Apply to this trial

High vs. Standard Dose Influenza Vaccines in Lung Transplant (Repeater)

for Immunization

1 site in Nashville

Sponsor: Vanderbilt University Medical Center

Sex: All·Age: 18+

Code: NCT07192458·Phase 2

Apply to this trial

First-in-Human Study of VNT-101: Safety, Tolerability, and Pharmacokinetics

for Influenza

1 site in Overland Park

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Sex: All·Age: 18 - 59·Accepts healthy volunteers

Code: NCT07169318·Phase 1

Apply to this trial

pH1N1 Blinded Challenge Study

for Influenza

2 sites incl. Baltimore

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Sex: All·Age: 18 - 55·Accepts healthy volunteers

Code: NCT07110532·Phase 1

Apply to this trial

A Study to Evaluate the Safety, Efficacy and Pharmacokinetics of Suraxavir Marboxil for Suspension

for Influenza

Sponsor: Jiangxi Kvvit Pharmaceutical Co., Ltd.

Sex: All·Age: 2 - 12

Code: NCT07113392·Phase 3

Safety and Pharmacokinetics of Ingavirin Forte, Capsules, 90 mg + 20 mg (Valenta Pharm JSC, Russia) Compared With Ingavirin, Capsules, 90 mg, Under Fasting and Fed Conditions.

for Influenza

Sponsor: Valenta Pharm JSC

Sex: All·Age: 18 - 45·Accepts healthy volunteers

Code: NCT07645534·Phase 1

Apply to this trial

SURVEILLANCE, ASSESSMENT AND DETECTION OF INFLUENZA ASSOCIATED RESPIRATORY INFECTIONS IN HIV POSITIVE AND NEGATIVE INDIVIDUALS IN LUSAKA, ZAMBIA

for Influenza

Sponsor: Centre for Infectious Disease Research in Zambia

Sex: All·Age: 18+

Code: NCT07030075

Apply to this trial

H5N1 Milk Detection Study

for Influenza

1 site in Atlanta

Sponsor: Emory University

Sex: All·Age: 18 - 64·Accepts healthy volunteers

Code: NCT06850298

Apply to this trial

Routine Application of Point-of-care PCR Test to Identify and Direct Therapy for Acute Respiratory Infection in the Emergency Department Trial

for Influenza

Sponsor: The University of Hong Kong

Sex: All·Age: 18+

Code: NCT06780566

GEneRating Mucosal Immunity After INfluenzA Infection and Vaccination in Lung and Lymphoid TissuE

for Influenza

Sponsor: Imperial College London

Sex: All·Age: 18 - 55·Accepts healthy volunteers

Code: NCT06620185

Apply to this trial

Dissecting Human Immune Responses to Infection With Influenza or SARS-CoV-2

for Influenza

1 site in St Louis

Sponsor: Washington University School of Medicine

Sex: All·Age: 18 - 60·Accepts healthy volunteers

Code: NCT06848309

Apply to this trial

Efficacy and Safety of Nitazoxanide 600 Mg in the Outpatient Treatment of COVID-19 and Influenza

for Covid 19

Sponsor: Azidus Brasil

Sex: All·Age: 18+

Code: NCT06817096·Phase 3

A/Texas Flu Challenge

for Influenza

2 sites in Atlanta

Sponsor: Emory University

Sex: All·Age: 18 - 49·Accepts healthy volunteers

Code: NCT06753474·Phase 1

Apply to this trial

The Effects of Endotracheal Suctioning on Pain and Serum Markers

for Intensive Care Unit ICU

1 site in Loma Linda

Sponsor: Loma Linda University

Sex: All·Age: 18+

Code: NCT06692400

Apply to this trial

Study of the Safety, Tolerability, and Pharmacokinetic Profile of Ascending Doses of Ingavirin Forte, Capsules, Folliwing Single and Subsequent Multiple Oral Administration in Healthy Volunteers

for Influenza

Sponsor: Valenta Pharm JSC

Sex: All·Age: 18 - 45·Accepts healthy volunteers

Code: NCT06859333·Phase 1

Apply to this trial

Oseltamivir and Baloxavir Marboxil for Prophylaxis Against Influenza Under a Hospital-based Setting

for Influenza

Sponsor: Capital Medical University

Sex: All·Age: 2+·Accepts healthy volunteers

Code: NCT06762587

The Role of Cxcr4Hi neutrOPhils in InflueNza

for Influenza

Sponsor: University Hospital, Bordeaux

Sex: All·Age: 18+

Code: NCT06254313

Apply to this trial

Study to Assess the Efficacy and Safety of GP681 Versus Placebo for Postexposure Prophylaxis Against Influenza

for Influenza

Sponsor: Jiangxi Qingfeng Pharmaceutical Co. Ltd.

Sex: All·Age: 12+·Accepts healthy volunteers

Code: NCT06574503·Phase 3

Apply to this trial

COVID-19 Booster and IIV Schedule in Immunocompromised Hosts

for COVID 19

Sponsor: McGill University Health Centre/Research Institute of the McGill University Health Centre

Sex: All·Age: 18+

Code: NCT06599658·Phase 2

Apply to this trial

The INFLUENTIAL Trial- Evaluation of National Inpatient Influenza Vaccination Program

for Influenza

2 sites incl. Chicago

Sponsor: University of Colorado, Denver

Sex: All·Age: 6 Months - 99·Accepts healthy volunteers

Code: NCT05832307

Apply to this trial

Clinical Trial Evaluating the Efficacy and Safety of Dexamethasone Compared to Placebo in Patients With Severe Influenza

for Influenza

Sponsor: Instituto de Investigación Sanitaria y Biomédica de Alicante

Sex: All·Age: 18 - 100·Accepts healthy volunteers

Code: NCT06528444·Phase 3

Apply to this trial

High vs.Standard Dose Influenza Vaccine in Pediatric Solid Organ Transplant (SOT) Recipients

for Immunization

8 sites incl. Stanford

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Sex: All·Age: 3 - 17

Code: NCT05947071·Phase 2

Apply to this trial

Clinical Study on the Immune Response Characteristics of Novel Coronavirus and Influenza Virus Infection

for COVID-19

Sponsor: Zhongnan Hospital

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT06667063

Apply to this trial

Dime La VerDAD: Verify, Debunk, and Disseminate

for Influenza

1 site in Chicago

Sponsor: University of Chicago

Sex: All·Age: 18 - 99·Accepts healthy volunteers

Code: NCT06417762

Apply to this trial

Influenza & COVID-19 Obstetric and Perinatal Epidemiology Study in India

for Influenza

1 site in Boston

Sponsor: Boston University

Sex: Female·Age: 18 - 50

Code: NCT06168019

Apply to this trial

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

for Influenza

19 sites incl. Birmingham

Sponsor: Hoffmann-La Roche

Sex: All·Age: 3 Weeks - 11

Code: NCT06094010·Phase 3

Apply to this trial

Systems Investigation of Vaccine Responses in Aging and Frailty

for Influenza

1 site in New Haven

Sponsor: Yale University

Sex: All·Age: 21+·Accepts healthy volunteers

Code: NCT05291676·Phase 2

Apply to this trial

Observational Digital Biomarker Discovery in Respiratory Virus Challenge Studies

for Influenza

1 site in Bethesda

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Sex: All·Age: 18 - 65·Accepts healthy volunteers

Code: NCT04772170

Apply to this trial

Bone Marrow and Peripheral Blood Immune Responses Study

for Influenza

1 site in Atlanta

Sponsor: Emory University

Sex: All·Age: 18 - 64·Accepts healthy volunteers

Code: NCT05616546·Phase 4

Apply to this trial

A Phase 2 Trial Comparing Antiviral Treatments in Early Symptomatic Influenza

for Influenza

Sponsor: University of Oxford

Sex: All·Age: 18 - 60

Code: NCT05648448·Phase 2

Apply to this trial

High vs. Standard Dose Influenza Vaccine in Lung Allograft Recipients

for Immunization

1 site in Nashville

Sponsor: Vanderbilt University Medical Center

Sex: All·Age: 16+

Code: NCT05215327·Phase 2

Apply to this trial

Clinical Outcomes and Pharmacotherapy Effectiveness in the VA Health Care System (COPE-VA)

for COVID-19, SARS-CoV-2 Infection

1 site in Portland

Sponsor: VA Office of Research and Development

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT06160128

Apply to this trial

Respiratory Virus Sampling and Repository

for Influenza

2 sites in Bethesda

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Sex: All·Age: 3+

Code: NCT05266222

Apply to this trial

Influenza clinical trials — common questions

Are influenza clinical trials free to join?

Yes. Participating in a influenza clinical trial is free — study-related visits, tests, and the investigational treatment are provided at no cost to you. Many studies also reimburse travel and time. You never pay to take part.

Who can join a influenza clinical trial?

Each influenza study sets its own eligibility criteria — typically based on age, medical history, current treatments, and overall health. Every trial listed here shows its criteria, and the study team confirms your eligibility before enrollment. You can review and apply to any that look like a fit.

How do I find a influenza trial near me?

Use the location controls above. We'll show recruiting influenza trials with sites near you, sorted by distance. You can widen the radius or share your exact location for the closest matches.

How many influenza trials are recruiting right now?

We're currently tracking roughly 32 recruiting influenza trials with US sites, sourced from ClinicalTrials.gov and refreshed daily.

Looking for a specific location? Browse trials by city and state.

Influenza trials by city

Chicago, IL Birmingham, AL Boston, MA Loma Linda, CA Los Angeles, CA Portland, OR Stanford, CA Worcester, MA

Related specialties

Infectious disease