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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Respiratory Viral Infections Clear all
Recruiting Phase 2 Interventional

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

NCT05947071
View directory record Official record
Conditions
Immunization; Infection, Transplantation Infection, Influenza
Interventions
Standard Dose Quadrivalent Inactivated Influenza Vaccine, High Dose Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years to 17 Years
Enrollment
312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
8
States / cities
Stanford, California • Atlanta, Georgia • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Jul 23, 2026, 1:51 PM EDT
Completed No phase listed Observational

Pilot Study of Allergy Immunotherapy and Prevention of Viral Respiratory Infections

NCT00405899
View directory record Official record
Conditions
Allergy, Seasonal Allergic Rhinitis, Perennial Allergic Rhinitis
Interventions
Not listed
Lead sponsor
West Penn Allegheny Health System
Other
Eligibility
6 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 30, 2010 · Synced Jul 23, 2026, 1:51 PM EDT
Withdrawn Phase 3 Interventional

Tocilizumab for the Treatment of Cytokine Release Syndrome in Patients With COVID-19 (SARS-CoV-2 Infection)

NCT04361552
View directory record Official record
Conditions
Cerebrovascular Accident, Chronic Obstructive Pulmonary Disease, Chronic Renal Failure, Coronary Artery Disease, Diabetes Mellitus, Malignant Neoplasm, SARS Coronavirus 2 Infection
Interventions
Best Practice, Tocilizumab
Other · Biological
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 17, 2020 · Synced Jul 23, 2026, 1:51 PM EDT
Terminated No phase listed Observational

COVID-19 (Coronavirus Disease-2019) Psychiatric Outcomes

NCT05119400
View directory record Official record
Conditions
Covid19, Anxiety, Mood, Cognitive Impairment
Interventions
Not listed
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 89 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 11, 2024 · Synced Jul 23, 2026, 1:51 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

H7N9 Boost in Healthy Adults

NCT02586792
View directory record Official record
Conditions
Influenza
Interventions
Monovalent influenza A/H7N9 virus vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 50 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2018 · Synced Jul 23, 2026, 1:51 PM EDT
Completed Phase 3 Interventional Results available

ACTIV-6: COVID-19 Study of Repurposed Medications - Arm E (Fluvoxamine 100)

NCT05894564
View directory record Official record
Conditions
Covid19
Interventions
Fluvoxamine, Placebo
Drug · Other
Lead sponsor
Susanna Naggie, MD
Other
Eligibility
30 Years and older
Enrollment
1,208 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
103
States / cities
Gilbert, Arizona • Mesa, Arizona • Peoria, Arizona + 90 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2024 · Synced Jul 23, 2026, 1:51 PM EDT
Completed Not applicable Interventional

Respiratory Decompensation and Model for the Triage of COVID-19 Patients

NCT04390516
View directory record Official record
Conditions
COVID-19, Coronavirus, Mortality, Mechanical Ventilation
Interventions
COViage
Device
Lead sponsor
Dascena
Industry
Eligibility
18 Years and older
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Jun 11, 2020 · Synced Jul 23, 2026, 1:51 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

PatientSpot Formerly Known as ArthritisPower

NCT03840928
View directory record Official record
Conditions
Rheumatoid Arthritis, Ankylosing Spondylitis, Fibromyalgia, Gout, Crohn Disease, Juvenile Idiopathic Arthritis, Lupus Erythematosus, Myositis, Osteoarthritis, Osteoporosis, Psoriasis, Psoriatic Arthritis, Scleroderma, Dermatomyositis, Inflammatory Bowel Diseases, Polymyositis, Axial Spondyloarthritis, Diffuse Idiopathic Skeletal Hyperostosis, Polymyalgia Rheumatica, Giant Cell Arteritis, Temporal Arteritis, Wegener, Relapsing Polychondritis, Undifferentiated Connective Tissue Disease, Spinal Cord Injuries, Alzheimer Disease, Amyotrophic Lateral Sclerosis, Ataxia, Bell Palsy, Brain Tumor, Cerebral Aneurysm, Epilepsy, Guillain-Barre Syndrome, Headache, Head Injury, Hydrocephalus, Lumbar Disc Disease, Meningitis, Multiple Sclerosis, Muscular Dystrophy, Neurocutaneous Syndromes, Parkinson Disease, Stroke, Cluster Headache, Tension-Type Headache, Chronic Obstructive Pulmonary Disease, Asthma, Lung Cancer, Cystic Fibrosis, Sleep Apnea, Eczema, Alopecia, Chronic Inflammation, Unstable Angina, Heart Attack, Heart Failure, Arrythmia, Valve Heart Disease, High Blood Pressure, Congenital Heart Disease, Peripheral Arterial Disease, Diabetes, Chronic Liver Disease, Obesity
Interventions
Not listed
Lead sponsor
Global Healthy Living Foundation
Other
Eligibility
19 Years and older
Enrollment
40,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2025
U.S. locations
1
States / cities
Upper Nyack, New York
Source: ClinicalTrials.gov public record
Updated Dec 12, 2023 · Synced Jul 23, 2026, 1:51 PM EDT
Completed No phase listed Observational Results available

The Natural History of Viral Upper Respiratory Infections in Children Aged 6 to Less Than 14 Years

NCT00405509
View directory record Official record
Conditions
Upper Respiratory Infection, Common Cold
Interventions
Not listed
Lead sponsor
West Penn Allegheny Health System
Other
Eligibility
6 Years to 13 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 18, 2016 · Synced Jul 23, 2026, 1:51 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Have Physical Therapists Attitudes and Beliefs Towards Vital Assessment Changed Following the COVID-19 Pandemic?

NCT05908045
View directory record Official record
Conditions
Vital Signs
Interventions
KAP Survey
Other
Lead sponsor
Youngstown State University
Other
Eligibility
23 Years to 100 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Youngstown, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 23, 2024 · Synced Jul 23, 2026, 1:51 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

A Study Evaluating MDX2301 in Healthy Adults and Adults at Higher Risk for Severe COVID-19.

NCT07445971
View directory record Official record
Conditions
COVID -19, COVID-19 (Prevention)
Interventions
MDX2301, Normal Saline
Biological
Lead sponsor
ModeX Therapeutics, An OPKO Health Company
Industry
Eligibility
18 Years to 64 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
2
States / cities
Las Vegas, Nevada • Austin, Texas
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Jul 23, 2026, 1:51 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Virtual Prospective Study Exploring Activity Trackers and COVID-19 Infections

NCT04623138
View directory record Official record
Conditions
Covid19, SARS-CoV Infection
Interventions
Not listed
Lead sponsor
Evidation Health
Industry
Eligibility
18 Years and older
Enrollment
847 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Mateo, California
Source: ClinicalTrials.gov public record
Updated Jan 10, 2022 · Synced Jul 23, 2026, 1:51 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Determine the Safety and Efficacy of the RSV F Vaccine to Protect Infants Via Maternal Immunization

NCT02624947
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
RSV F vaccine with adjuvant, Formulation buffer
Biological
Lead sponsor
Novavax
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
4,636 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
49
States / cities
Birmingham, Alabama • Cullman, Alabama • Fort Defiance, Arizona + 43 more
Source: ClinicalTrials.gov public record
Updated May 5, 2025 · Synced Jul 23, 2026, 1:51 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Cardiac Magnetic Resonance Tissue Characterization in COVID-19 Survivors

NCT05164744
View directory record Official record
Conditions
COVID-19 Pneumonia, COVID-19, COVID-19 Respiratory Infection, COVID-19 Acute Respiratory Distress Syndrome, COVID-19 Lower Respiratory Infection, COVID-19 Acute Bronchitis, Coronavirus Disease 2019
Interventions
Cardiac MRI, Echocardiogram, 6-minute walk test, Questionnaire
Diagnostic Test
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
510 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
3
States / cities
Brooklyn, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Jul 23, 2026, 1:51 PM EDT
Completed Phase 2 Interventional Results available

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Neutralizing Antibody BGB-DXP593 in Participants With Mild-to-Moderate Coronavirus Disease 2019 (COVID-19)

NCT04551898
View directory record Official record
Conditions
Covid19
Interventions
BGB-DXP593, Placebo
Drug
Lead sponsor
BeiGene
Industry
Eligibility
18 Years to 65 Years
Enrollment
181 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
11
States / cities
DeLand, Florida • Hollywood, Florida • Miami, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2024 · Synced Jul 23, 2026, 1:51 PM EDT
Recruiting No phase listed Observational

Collection of Blood From Healthy Patients, Patients With Benign Disease and Patients With Cancer

NCT05181826
View directory record Official record
Conditions
Cancer, Liver Cirrhosis, Chronic Hepatitis, Hepatitis B, Hepatitis C, Diabetes, COPD
Interventions
Multi-analyte Blood Test
Diagnostic Test
Lead sponsor
Helio Genomics
Industry
Eligibility
18 Years and older
Enrollment
1,200 participants
Timeline
2019 – 2028
U.S. locations
7
States / cities
Redondo Beach, California • Coon Rapids, Minnesota • Fridley, Minnesota + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Jul 23, 2026, 1:51 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Testing a Personalized Normative Feedback Intervention for Vaccine Hesitancy

NCT05787015
View directory record Official record
Conditions
COVID-19, Vaccine Hesitancy
Interventions
Vaccine Norms Feedback, Alcohol Norms Feedback
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 24 Years
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 27, 2023 · Synced Jul 23, 2026, 1:51 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Safety, Reactogenicity, and Immunogenicity Study of mRNA-1073 (COVID-19/Influenza) Vaccine in Adults 18 to 75 Years Old

NCT05375838
View directory record Official record
Conditions
SARS-CoV-2, Influenza
Interventions
mRNA-1073, mRNA-1010, mRNA-1273, Placebo
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
14
States / cities
Hollywood, Florida • Peoria, Illinois • Sioux City, Iowa + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Jul 23, 2026, 1:51 PM EDT
Completed No phase listed Observational

Innovative Support for Patients With SARS-COV2 Infections (COVID-19) Registry (INSPIRE)

NCT04610515
View directory record Official record
Conditions
Covid19, ME/CFS, SARS COV2, Novel Coronavirus Infection, Neurocognitive Disorders, Cardiovascular Diseases
Interventions
Not listed
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
6,000 participants
Timeline
2020 – 2025
U.S. locations
8
States / cities
Los Angeles, California • San Francisco, California • New Haven, Connecticut + 5 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Jul 23, 2026, 1:51 PM EDT
Completed No phase listed Observational

Diagnosing Respiratory Disease in Children Using Cough Sounds 2

NCT03392363
View directory record Official record
Conditions
Pneumonia, Bronchiolitis, Asthma Exacerbation, Croup, Reactive Airway Disease, Upper Respiratory Disease, Viral Lower Respiratory Tract Infections, Lower Respiratory Disease
Interventions
Recordings of Infants and Children's Cough Sounds
Device
Lead sponsor
ResApp Health Limited
Industry
Eligibility
29 Days to 12 Years
Enrollment
1,470 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
3
States / cities
Boston, Massachusetts • Cleveland, Ohio • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 7, 2018 · Synced Jul 23, 2026, 1:51 PM EDT
Completed Phase 1 Interventional

Drug Interaction Study Between Inhaled Beclomethasone and Protease Inhibitors in Healthy Volunteers

NCT00936793
View directory record Official record
Conditions
HIV, Asthma
Interventions
Darunavir, Ritonavir, Beclomethasone Dipropionate HFA
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 60 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 1:51 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 22, 2026 · Synced Jul 23, 2026, 1:51 PM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Pharma-Pen (Formerly Innoject) Auto-injectory TIV

NCT00335855
View directory record Official record
Conditions
Influenza
Interventions
Auto-injector for IM/SC vaccine administration
Device
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2006
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 22, 2019 · Synced Jul 23, 2026, 1:51 PM EDT