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Showing 1–24 of 35 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Influenza -Like Illness Clear all
Completed Phase 3 Interventional Results available

Characterize Flu-like Symptoms in Relapsing Multiple Sclerosis Patients Transitioning From Non-Pegylated Interferon Beta (IFN-β) Therapies to Peginterferon Beta-1a (BIIB017)

NCT01939002
View directory record Official record
Conditions
Relapsing Multiple Sclerosis
Interventions
BIIB017, naproxen
Drug
Lead sponsor
Biogen
Industry
Eligibility
18 Years to 65 Years
Enrollment
251 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
38
States / cities
Gilbert, Arizona • Phoenix, Arizona • Tucson, Arizona + 34 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2017 · Synced Sep 24, 2026, 3:14 AM EDT
Completed Phase 3 Interventional Results available

Study to Assess the Safety, Pharmacokinetics, and Efficacy of Baloxavir Marboxil in Healthy Pediatric Participants With Influenza-Like Symptoms

NCT03629184
View directory record Official record
Conditions
Influenza
Interventions
Baloxavir Marboxil, Oseltamivir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
1 Year to 11 Years
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
27
States / cities
Birmingham, Alabama • Harrisburg, Arkansas • Jonesboro, Arkansas + 22 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2020 · Synced Sep 24, 2026, 3:14 AM 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 21, 2020 · Synced Sep 24, 2026, 3:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Efficacy Study of Two Influenza Vaccines and Placebo in Healthy Adult Subjects

NCT00630331
View directory record Official record
Conditions
Influenza
Interventions
Cell culture-derived influenza vaccine, Egg-derived influenza virus vaccine, Placebo
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
18 Years to 49 Years
Enrollment
11,404 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
17
States / cities
Denver, Colorado • Pembroke Pines, Florida • South Miami, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated May 23, 2024 · Synced Sep 24, 2026, 3:14 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Determining the Effect of Actimmune (Interferon Gamma 1b)Dose Titration on Flu-Like Symptoms in Healthy Volunteers

NCT01929382
View directory record Official record
Conditions
Adverse Effects in the Therapeutic Use of Interferon
Interventions
interferon gamma 1b
Drug
Lead sponsor
Vidara Therapeutics Research Ltd
Industry
Eligibility
18 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 27, 2013 · Synced Sep 24, 2026, 3:14 AM EDT
Not listed No phase listed Observational

The DETECT(Digital Engagement & Tracking for Early Control, & Treatment) Study

NCT04336020
View directory record Official record
Conditions
Influenza, Virus
Interventions
Not listed
Lead sponsor
Scripps Translational Science Institute
Other
Eligibility
18 Years and older
Enrollment
100,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Sep 24, 2026, 3:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Kent State University / Price Chopper Employee Wellness Study

NCT03454009
View directory record Official record
Conditions
Acute Respiratory Infection, Influenza-like Illness, Gastrointestinal Infection
Interventions
Multimodal hygiene intervention
Behavioral
Lead sponsor
Kent State University
Other
Eligibility
18 Years and older
Enrollment
195 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Schenectady, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2019 · Synced Sep 24, 2026, 3:14 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 11, 2022 · Synced Sep 24, 2026, 3:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D3 Supplementation to Prevent Respiratory Tract Infections

NCT04596657
View directory record Official record
Conditions
Respiratory Tract Infections, Covid19, Flu Like Illness
Interventions
Vitamin D supplementation
Dietary Supplement
Lead sponsor
The Cooper Health System
Other
Eligibility
18 Years and older
Enrollment
877 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Camden, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 7, 2023 · Synced Sep 24, 2026, 3:14 AM EDT
Suspended Not applicable Interventional

ORCHARDS-AIR Study

NCT07298967
View directory record Official record
Conditions
Acute Respiratory Infection, Influenza-like Illness
Interventions
Nasal swab, Indoor air quality monitor
Diagnostic Test · Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
4 Years and older
Enrollment
422 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Sep 24, 2026, 3:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

FluSAFE: Flu SMS Alerts to Freeze Exposure

NCT03274310
View directory record Official record
Conditions
Influenza, Acute Respiratory Infection, Influenza-like Illness
Interventions
Educational text messages
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
Not listed
Enrollment
1,918 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 15, 2025 · Synced Sep 24, 2026, 3:14 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers Results available

A Pragmatic Assessment of Influenza Vaccine Effectiveness in the DoD

NCT03734237
View directory record Official record
Conditions
Influenza, Influenza-like Illness, Influenza Vaccines
Interventions
Egg based influenza vaccines, Recombinant influenza vaccines, Cell-culture based influenza vaccines
Biological
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years and older
Enrollment
15,448 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
9
States / cities
San Diego, California • Annapolis, Maryland • Bethesda, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Sep 24, 2026, 3:14 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Evaluation of the Safety and Pharmacokinetics of Oleander 4X in Healthy Volunteers

NCT04674709
View directory record Official record
Conditions
Flu-like Symptoms
Interventions
Oleander 4X - single, Oleander 4X - double, Oleander 4X - quadruple, Placebo
Drug
Lead sponsor
Avila Herbals
Industry
Eligibility
18 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 20, 2020 · Synced Sep 24, 2026, 3:14 AM EDT
Completed Phase 2 Interventional

Efficacy and Safety of Norketotifen in Uncomplicated Influenza-like Illness

NCT04610047
View directory record Official record
Conditions
Influenza, Influenza -Like Illness
Interventions
Norketotifen, Placebo
Drug
Lead sponsor
Emergo Therapeutics, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
20
States / cities
Phoenix, Arizona • Los Angeles, California • DeBary, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2023 · Synced Sep 24, 2026, 3:14 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of Psychometric Testing Properties of Severity Symptom Grading Scale of Influenza Infection: Flu-PRO Stage III

NCT02302924
View directory record Official record
Conditions
Influenza, Influenza-like Illness
Interventions
Not listed
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years and older
Enrollment
535 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
5
States / cities
San Diego, California • Bethesda, Maryland • San Antonio, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Sep 24, 2026, 3:14 AM EDT
Completed No phase listed Observational

Flu-Like Symptoms as a Complication of Botulinum Toxin Therapy

NCT01337453
View directory record Official record
Conditions
Flu-like Symptoms
Interventions
Not listed
Lead sponsor
Christine Hunter
Other
Eligibility
18 Years and older
Enrollment
247 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 23, 2012 · Synced Sep 24, 2026, 3:14 AM EDT
Not listed Phase 4 Interventional

Evaluating the Use of Prednisone to Decrease Pegylated Interferon Beta-1a Side Effects

NCT03424733
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Plegridy, Prednisone, Tylenol Pill
Drug
Lead sponsor
Holy Name Medical Center, Inc.
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Teaneck, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 14, 2019 · Synced Sep 24, 2026, 3:14 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Acute Respiratory Infection Consortium

NCT01021098
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
17 Years to 55 Years
Enrollment
2,018 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2023
U.S. locations
5
States / cities
San Diego, California • Bethesda, Maryland • San Antonio, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 23, 2023 · Synced Sep 24, 2026, 3:14 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Study on the Efficacy of a Vaccine Against Influenza in Adults ≥65 Years of Age

NCT07805707
View directory record Official record
Conditions
Influenza, Human
Interventions
mRNA Seasonal Flu vaccine, Licensed Influenza Vaccine
Combination Product
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
65 Years and older
Enrollment
54,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
161
States / cities
Anniston, Alabama • Guntersville, Alabama • Glendale, Arizona + 128 more
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Sep 24, 2026, 3:14 AM 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 14, 2023 · Synced Sep 24, 2026, 3:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Predict + Protect Study: Exploring the Effectiveness of a Predictive Health Education Intervention on the Adoption of Protective Behaviors Related to ILI

NCT06229444
View directory record Official record
Conditions
Influenza, Influenza A, Influenza B, COVID-19, Respiratory Syncytial Virus (RSV)
Interventions
ILI Predictive Alerts, Reactive Content, and Proactive Content, ILI Predictive Alerts, Reactive Content, Proactive Content, No Intervention
Behavioral
Lead sponsor
Evidation Health
Industry
Eligibility
18 Years and older
Enrollment
17,043 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
San Mateo, California
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 24, 2026, 3:14 AM EDT
Completed Not applicable Interventional

Impact of Rapid Flu Testing in BMC ED

NCT02979730
View directory record Official record
Conditions
Influenza-Like Illness, Influenza
Interventions
Core Lab Test, ED Point of Care Test
Other
Lead sponsor
Boston Medical Center
Other
Eligibility
21 Years and older
Enrollment
233 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 23, 2018 · Synced Sep 24, 2026, 3:14 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

REDucing Influenza Among University Students, University of California at Berkeley

NCT00448773
View directory record Official record
Conditions
Influenza-like Illness, Influenza
Interventions
Online education
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
17 Years and older
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Jan 6, 2010 · Synced Sep 24, 2026, 3:14 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Recombinant Influenza Vaccination in U.S. Nursing Homes

NCT03965195
View directory record Official record
Conditions
Influenza, Influenza -Like Illness, Influenza, Human
Interventions
Recombinant Influenza Vaccine, Standard Dose Quadrivalent Influenza Vaccine
Biological
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
18 Years to 120 Years
Enrollment
1,989 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 14, 2023 · Synced Sep 24, 2026, 3:14 AM EDT