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ClinicalTrials.gov public records Last synced Oct 19, 2026, 2:22 AM EDT

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Showing 1249–1272 of 3,928 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Respiratory Tract Infections (RTI) Clear all
Completed No phase listed Observational

Prophylactic Versus Therapeutic Dose Anticoagulation In COVID-19 Infection at the Time of Admission To Critical Care Units

NCT04829552
View directory record Official record
Conditions
Covid19
Interventions
Not listed
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years and older
Enrollment
704 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 2, 2021 · Synced Oct 19, 2026, 2:22 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

A Clinical Study to Evaluate the Safety, Tolerability, and Immunogenicity of VAX-31 With Influenza Vaccine in Adults ≥ 50 Years of Age

NCT07365826
View directory record Official record
Conditions
Pneumococcal Vaccines
Interventions
31-valent pneumococcal conjugate vaccine, Seasonal Influenza Vaccine (SIV) (Flublok), Placebo
Biological
Lead sponsor
Vaxcyte, Inc.
Industry
Eligibility
50 Years and older
Enrollment
1,390 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
25
States / cities
Phoenix, Arizona • Fort Collins, Colorado • DeLand, Florida + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 19, 2026, 2:22 AM EDT
Active, not recruiting Phase 2 Interventional

Phase 2a Multiple Ascending Dose Study in Hospitalized Patients With Pneumonia.

NCT05123755
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Viral or Bacterial Infections, Pneumonia, Pneumonia, Viral, Respiratory Infection, COVID-19 Acute Respiratory Distress Syndrome
Interventions
AV-001 Injection, AV-001 Placebo Injection
Drug
Lead sponsor
Vasomune Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
6
States / cities
Newport Beach, California • Denver, Colorado • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 19, 2026, 2:22 AM 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 28, 2024 · Synced Oct 19, 2026, 2:22 AM EDT
Active, not recruiting No phase listed Observational

A Longitudinal Study of COVID-19 Sequelae and Immunity

NCT04411147
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 120 Years
Enrollment
583 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 19, 2026, 2:22 AM EDT
Completed Phase 3 Interventional Results available

Aviptadil for Severely Ill Inpatients With COVID-19 (An ACTIV-3b/TESICO Treatment Trial)

NCT06729606
View directory record Official record
Conditions
Covid19
Interventions
Aviptadil, Aviptadil Placebo, Corticosteroid
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
471 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
40
States / cities
Tucson, Arizona • Fresno, California • Loma Linda, California + 28 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2025 · Synced Oct 19, 2026, 2:22 AM EDT
Terminated Phase 4 Interventional Results available

Mobile Devices to Detect Early Pneumonitis in Stage III NSCLC Patients on Durvalumab.

NCT04381494
View directory record Official record
Conditions
Unresectable Stage III NSCLC
Interventions
Multiparametric Mobile Technology
Device
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
18
States / cities
Long Beach, California • Santa Ana, California • Englewood, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Oct 19, 2026, 2:22 AM EDT
Completed Phase 3 Interventional

A Comparison Of Valdecoxib 20 Mg Twice Daily and 40 Mg Daily and Placebo In The Treatment Of Sore Throat

NCT00647829
View directory record Official record
Conditions
Pharyngitis
Interventions
valdecoxib, placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003
U.S. locations
2
States / cities
Storrs, Connecticut • Boca Raton, Florida
Source: ClinicalTrials.gov public record
Updated Apr 24, 2008 · Synced Oct 19, 2026, 2:22 AM EDT
Completed Not applicable Interventional

UNITE Study (UMN-GE) for COVID-19

NCT04701489
View directory record Official record
Conditions
Covid19, Cytokine Storm, Inflammation
Interventions
Splenic ultrasound
Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated May 3, 2024 · Synced Oct 19, 2026, 2:22 AM EDT
Completed Phase 1 Interventional

Testing the AVI-7100 Flu Drug in Healthy Volunteers

NCT01747148
View directory record Official record
Conditions
Influenza
Interventions
AVI-7100 versus placebo
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 26, 2017 · Synced Oct 19, 2026, 2:22 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Safety Study of Recombinant Influenza Vaccine for Prevention

NCT02015494
View directory record Official record
Conditions
Influenza
Interventions
VAX2012Q
Biological
Lead sponsor
VaxInnate Corporation
Industry
Eligibility
18 Years to 40 Years
Enrollment
316 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
4
States / cities
Lenexa, Kansas • Rochester, New York • Mt. Pleasant, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 6, 2015 · Synced Oct 19, 2026, 2:22 AM EDT
Active, not recruiting No phase listed Observational

Reducing Antibiotic Use by Implementation of Stewardship in Primary and Urgent Care

NCT07217002
View directory record Official record
Conditions
Community Acquired Pneumonia (CAP), Sinusitis, Strep Pharyngitis, Acute Otitis Media (AOM)
Interventions
Online Educational Modules, Prescribing Feedback Reports, Clinical Decision Support, Live, hybrid in-person and online educational sessions
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
6 Months to 12 Years
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Oct 19, 2026, 2:22 AM EDT
Completed Phase 2 Interventional Results available

Treatment With Investigational Convalescent Plasma and Measure Antibody Levels in Patients Hospitalized With COVID-19

NCT04434131
View directory record Official record
Conditions
COVID-19
Interventions
Convalescent Plasma
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 8, 2023 · Synced Oct 19, 2026, 2:22 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Clinical Trial of CSL's 2009 H1N1 Influenza Vaccine (CSL425) in Healthy Adults in the USA

NCT00958126
View directory record Official record
Conditions
Influenza
Interventions
CSL425, Placebo
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years and older
Enrollment
1,313 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
11
States / cities
Huntsville, Alabama • San Diego, California • Melbourne, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 21, 2017 · Synced Oct 19, 2026, 2:22 AM EDT
Terminated No phase listed Observational

Non-Invasive Monitoring of Respiratory Function in Spontaneously Breathing Patients With COVID-19 Infection

NCT04356443
View directory record Official record
Conditions
Respiratory Failure, Ventilatory Failure, COVID-19, Pneumonia, ARDS, Human
Interventions
AirGo Respiratory Monitor
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced Oct 19, 2026, 2:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Influenza HA Ferritin Vaccine, Alone or in Prime-Boost Regimens With an Influenza DNA Vaccine in Healthy Adults

NCT03186781
View directory record Official record
Conditions
Influenza
Interventions
VRC-FLUNPF081-00-VP (HA-F A/Sing), VRC-FLUDNA082-00-VP (DNA A/Sing)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 16, 2021 · Synced Oct 19, 2026, 2:22 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Non-invasive Characterization of Systemic Microvascular Reactivity by Near-infrared Diffuse Optical Spectroscopy in COVID-19 Patients

NCT04689477
View directory record Official record
Conditions
COVID-19, Endothelial Function
Interventions
Vascular occlusion test
Device
Lead sponsor
Corporacion Parc Tauli
Other
Eligibility
18 Years and older
Enrollment
612 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 1, 2022 · Synced Oct 19, 2026, 2:22 AM EDT
Withdrawn Phase 3 Interventional

Azithromycin Plus Hydroxychloroquine for COVID-19 Infection

NCT05026801
View directory record Official record
Conditions
Respiratory Tract Infection Viral
Interventions
Azithromycin plus hydroxychloroquine
Drug
Lead sponsor
Iterum Therapeutics, International Limited
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Waterbury, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Oct 19, 2026, 2:22 AM EDT
Completed Phase 2 Interventional

Factor Xa Inhibitor Versus Standard of Care Heparin in Hospitalized Patients With COVID-19 (XACT)

NCT04640181
View directory record Official record
Conditions
Covid19
Interventions
Enoxaparin, Rivaroxaban
Drug
Lead sponsor
St. David's HealthCare
Other
Eligibility
18 Years to 100 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 30, 2021 · Synced Oct 19, 2026, 2:22 AM EDT
Completed No phase listed Observational

Systematic Assessment and Targeted Improvement of Services Following Yearlong Surgical Outcomes Surveys

NCT02032030
View directory record Official record
Conditions
Heart Attack, Cardiac Arrest, Congestive Heart Failure, Atrial Fibrillation, Angina, Deep Vein Thrombosis, Pulmonary Embolism, Respiratory Arrest, Respiratory Failure, Pneumonia, Gastrointestinal Bleed, Stomach Ulcer, Delirium, Stroke, Nerve Injury, Surgical Wound Infection
Interventions
Not listed
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
73,952 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2020
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 9, 2022 · Synced Oct 19, 2026, 2:22 AM EDT
Completed No phase listed Observational

Pharmacokinetics of Oseltamivir in Newborns and Infants

NCT01388439
View directory record Official record
Conditions
Prematurity of Fetus
Interventions
Oseltamivir
Drug
Lead sponsor
St. Louis Children's Hospital
Other
Eligibility
Up to 6 Months
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 6, 2011 · Synced Oct 19, 2026, 2:22 AM EDT
Completed Phase 2 Interventional Results available

A Study of LAM-002A for the Prevention of Progression of COVID-19

NCT04446377
View directory record Official record
Conditions
COVID-19 Disease
Interventions
Apilimod Dimesylate Capsule, Placebo
Drug · Other
Lead sponsor
IRulya Therapeutics Inc.
Industry
Eligibility
18 Years and older
Enrollment
142 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 8, 2023 · Synced Oct 19, 2026, 2:22 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Aerosolized and Intravenous Colistin in Healthy Adults

NCT01863719
View directory record Official record
Conditions
Pathogen Resistance, Pneumococcal Infection, Pneumonia
Interventions
Colistimethate sodium
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
2
States / cities
Baltimore, Maryland • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 2, 2020 · Synced Oct 19, 2026, 2:22 AM EDT