Influenza Clinical Trials

109 recruitingLast updated: June 18, 2026

There are 109 actively recruiting influenza clinical trials across 50 countries. Studies span Phase 1, Phase 2, Phase 3, Not Applicable, Phase 4. Top locations include Bethesda, Maryland, United States, Atlanta, Georgia, United States, Chicago, Illinois, United States. Updated daily from ClinicalTrials.gov.


Influenza Trials at a Glance

109 actively recruiting trials for influenza are listed on ClinicalTrialsFinder across 6 cities in 50 countries. The largest study group is Phase 1 with 21 trials, with the heaviest enrollment activity in Bethesda, Atlanta, and Chicago. Lead sponsors running influenza studies include National Institute of Allergy and Infectious Diseases (NIAID), Emory University, and University of Pennsylvania.

Browse influenza trials by phase

Treatments under study

About Influenza Clinical Trials

Looking for clinical trials for Influenza? There are currently 95 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Influenza trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Influenza clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 109 trials

Recruiting
Phase 1

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.

InfluenzaAcute Respiratory Viral Infections
Valenta Pharm JSC36 enrolled1 locationNCT07645534
Recruiting
Phase 1Phase 2

Study on Safety and Efficacy of Two Doses of PRS CK STORM in the Modulation of the Cytokine Storm in Patients With Acute Respiratory Infection Caused by SARS-Cov-2, Influenza A, Influenza B and Respiratory Syncytial Virus (RSV)

Systemic Inflammatory Response SyndromeSARS CoV-2Respiratory distress syndrome+2 more
PEACHES BIOTECH50 enrolled3 locationsNCT06684379
Recruiting
Phase 1

Quadrivalent Influenza HA Stem Vaccine VRC-FLUMOS0122-00-VP (SteMos1) With and Without ALFQ Adjuvant in Healthy Adults

Influenza PreventionPandemic Influenza Prevention
National Institute of Allergy and Infectious Diseases (NIAID)56 enrolled1 locationNCT07111078
Recruiting

Flu Infection at UPHS

Influenza, Human
University of Pennsylvania50 enrolled1 locationNCT06807840
Recruiting

Observational Digital Biomarker Discovery in Respiratory Virus Challenge Studies

CoronavirusInfluenzaRespiratory Virus
National Institute of Allergy and Infectious Diseases (NIAID)1,000 enrolled1 locationNCT04772170
Recruiting
Phase 3

A Study to Evaluate the Safety and Efficacy of CD388 for Prevention of Influenza

Influenza
Cidara Therapeutics Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)7,500 enrolled181 locationsNCT07159763
Recruiting

Screening for LID Clinical Studies Unit Healthy Volunteer Protocols

ZikaInfluenza
National Institute of Allergy and Infectious Diseases (NIAID)5,000 enrolled1 locationNCT01386424
Recruiting
Phase 3

Phase III DAS181 Lower Tract PIV Infection in Immunocompromised Subjects (Substudy: DAS181 for COVID-19): RCT Study

COVID-19Lower Respiratory Tract InfectionImmunocompromised+1 more
Ansun Biopharma, Inc.274 enrolled67 locationsNCT03808922
Recruiting
Phase 1

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

Influenza
National Institute of Allergy and Infectious Diseases (NIAID)78 enrolled1 locationNCT07169318
Recruiting
Phase 1

Study of Different Formulations of Vaccines Encoding the RSV Monovalent Antigen or the Flu H5 Antigen in Participants 18 to 49 Years of Age

Respiratory Syncytial Virus (RSV)Influenza A(H5N1)
Sanofi570 enrolled6 locationsNCT07516418
Recruiting
Phase 1Phase 2

Clinical Trials of Quadrivalent Influenza Vaccine

Influenza, Human
Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd.620 enrolled1 locationNCT06824519
Recruiting
Phase 3

Efficacy of Baloxavir Against Influenza in Hospitalized Patients: The INFLUENT Study (INpatients inFLUENza Treatment)

Influenza Disease; Flu
Dre Pauline Vetter484 enrolled1 locationNCT06653569
Recruiting
Not Applicable

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

KnowledgeVaccination UptakeInfluenza+3 more
Universiti Putra Malaysia351 enrolled4 locationsNCT06815250
Recruiting
Phase 3

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

Influenza
Hoffmann-La Roche1,100 enrolled51 locationsNCT06094010
Recruiting
Phase 4

Woodsmoke Exposure, Influenza Infection, and Nasal Immunity

InfluenzaSmoke Exposure
University of North Carolina, Chapel Hill112 enrolled1 locationNCT06841913
Recruiting

National Bacterial Meningitis Study in Children and Newborns

MeningitisChildren, OnlyNeonatal Infection+5 more
Association Clinique Thérapeutique Infantile du val de Marne10,000 enrolled1 locationNCT04664569
Recruiting
Phase 2

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

InfluenzaTransplantation InfectionImmunization; Infection
National Institute of Allergy and Infectious Diseases (NIAID)312 enrolled8 locationsNCT05947071
Recruiting
Not Applicable

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

Influenza
Imperial College London36 enrolled1 locationNCT06620185
Recruiting
Not Applicable

H5N1 Milk Detection Study

Influenza
Emory University30 enrolled1 locationNCT06850298
Recruiting
Phase 2

BPL-1357 Against H1N1 Influenza Virus Challenge

HumanInfluenza
National Institute of Allergy and Infectious Diseases (NIAID)129 enrolled2 locationsNCT07215858