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Showing 1–24 of 731 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Acute Respiratory Infection Clear all
Completed Phase 2 Interventional

A Clinical Trial of KT07 Capsule in the U.S.A

NCT02867358
View directory record Official record
Conditions
Influenza, Human
Interventions
KT07 Capsule, Placebo
Drug · Other
Lead sponsor
Yiling Pharmaceutical Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
391 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
81
States / cities
Birmingham, Alabama • Pelham, Alabama • Tolleson, Arizona + 66 more
Source: ClinicalTrials.gov public record
Updated Aug 30, 2020 · Synced Jul 21, 2026, 6:07 PM EDT
Active, not recruiting Not applicable Interventional Results available

Home-based Brain Stimulation Treatment for Post-acute Sequelae of COVID-19 (PASC)

NCT05092516
View directory record Official record
Conditions
Dysexecutive Syndrome, Post-Acute Sequelae of COVID-19
Interventions
Active tDCS, Sham tDCS
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Charlestown, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Not applicable Interventional

Telestroke at Comprehensive Stroke Center During the COVID-19 Pandemic

NCT04761874
View directory record Official record
Conditions
Stroke, Acute
Interventions
Telestroke
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
296 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Edina, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 21, 2021 · Synced Jul 21, 2026, 6:07 PM EDT
Recruiting Phase 2 Interventional

Convalescent Plasma as a Possible Treatment for COVID-19

NCT04442191
View directory record Official record
Conditions
COVID-19
Interventions
Convalescent plasma, Placebo
Biological
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
40 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 21, 2020 · Synced Jul 21, 2026, 6:07 PM EDT
Withdrawn Not applicable Interventional

Double-Blind Randomized Placebo-Controlled Trial of a Proprietary Full Hemp Flower Formulation for Long COVID

NCT05467904
View directory record Official record
Conditions
Post-acute COVID-19 Syndrome
Interventions
Xltranplus, Xltran
Other
Lead sponsor
LUCINDA BATEMAN, MD
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 16, 2025 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Phase 2 Interventional Results available

Investigating Otilimab in Patients With Severe Pulmonary COVID-19 Related Disease

NCT04376684
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome
Interventions
Otilimab, Placebo 1, Placebo 2, Standard of care
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
1,156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
21
States / cities
Mobile, Alabama • Little Rock, Arkansas • Sacramento, California + 18 more
Source: ClinicalTrials.gov public record
Updated Sep 22, 2024 · Synced Jul 21, 2026, 6:07 PM EDT
Recruiting Phase 2 Interventional

A Study to Assess Anktiva in Patients With Long Covid-19.

NCT07108036
View directory record Official record
Conditions
Long COVID
Interventions
N-803 (IL-15 Superagonist)
Drug
Lead sponsor
ImmunityBio, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Not applicable Interventional Results available

Urgent Care Management of Respiratory Illness Enabled With Novel Testing Pathway

NCT05467007
View directory record Official record
Conditions
Viral Infection, Acute Respiratory Infection, Upper Resp Tract Infection
Interventions
BioFire® Respiratory Panel 2.1-EZ
Diagnostic Test
Lead sponsor
Andrew Meltzer
Other
Eligibility
7 Years and older
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Jul 21, 2026, 6:07 PM EDT
Terminated Not applicable Interventional Results available

STIP: Statin Trial for Influenza Patients

NCT00970606
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Influenza, H1N1 Influenza
Interventions
Rosuvastatin (crestor), Placebo
Drug
Lead sponsor
Gordon Bernard
Other
Eligibility
13 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
21
States / cities
Little Rock, Alaska • Phoenix, Arizona • Stanford, California + 17 more
Source: ClinicalTrials.gov public record
Updated Mar 21, 2017 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Not applicable Interventional

Impact of Information Prescriptions on Medication Adherence in Emergency Department (ED) Patients

NCT01174706
View directory record Official record
Conditions
Patient Compliance, Medication Adherence, Medication Non-Adherence
Interventions
Information prescriptions
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
3,940 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
3
States / cities
Baltimore, Maryland • Columbia, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 20, 2018 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Not applicable Interventional

RECOVER-ENERGIZE Platform Protocol

NCT06404047
View directory record Official record
Conditions
Long COVID, Long Covid19, Long Covid-19
Interventions
Personalized Cardiopulmonary Rehabilitation, Structured Pacing, Education, Usual Care
Behavioral · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
660 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
42
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 33 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Phase 1 Interventional

Cord Blood Fucosylation to Enhance Homing and Engraftment in Patients With Hematologic Malignancies

NCT01471067
View directory record Official record
Conditions
Blood And Marrow Transplantation, Leukemia, Lymphoma, Transplantation Infection, Transplantation, Bone Marrow
Interventions
Melphalan, Fludarabine, Mycophenolate mofetil, Tacrolimus, Cord Blood Infusion, Rituximab, ATG, Busulfan, Clofarabine, Total Body Irradiation (TBI)
Drug · Procedure · Radiation
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
1 Year to 80 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 27, 2017 · Synced Jul 21, 2026, 6:07 PM EDT
Active, not recruiting No phase listed Observational

COVID-19 Outcome Prediction Algorithm

NCT05471011
View directory record Official record
Conditions
COVID-19, Post Acute Sequelae of COVID-19, Long COVID, Organ Dysfunction Syndrome, Multiple, Frailty Syndrome
Interventions
Blood and nasal swab sampling
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
7
States / cities
Los Angeles, California • Sylmar, California • Torrance, California + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Not applicable Interventional Results available

Early PP With HFNC Versus HFNC in COVID-19 Induced Moderate to Severe ARDS

NCT04325906
View directory record Official record
Conditions
Prone Positioning, High Flow Nasal Cannula, Acute Respiratory Distress Syndrome, Corona Virus Infection
Interventions
high flow nasal cannula (HFNC), Prone positioning (PP)
Device · Procedure
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 1, 2022 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Not applicable Interventional

Vagal Approaches on Long COVID-19

NCT07190105
View directory record Official record
Conditions
Long COVID Symptoms
Interventions
Sonocea Sonic Augmentation Technology (SAT), Truvaga Electrical Vagus Nerve Stimulator
Other
Lead sponsor
Leidos Life Sciences
Industry
Eligibility
18 Years and older
Enrollment
546 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Frederick, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Jul 21, 2026, 6:07 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Collection of SARS CoV-2 (COVID-19) Virus Secretions and Serum for Countermeasure Development

NCT04956445
View directory record Official record
Conditions
Covid19
Interventions
Not listed
Lead sponsor
Tulane University
Other
Eligibility
6 Months to 120 Years
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
2
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Jul 21, 2026, 6:07 PM EDT
Withdrawn Phase 3 Interventional Accepts healthy volunteers

Impact of GSE and Xylitol (Xlear) on COVID-19 Symptoms and Time to PCR Negativisation in COVID-19 Patients

NCT04854486
View directory record Official record
Conditions
Covid19
Interventions
GSE and Xylitol, Control Placebo
Other · Drug
Lead sponsor
Larkin Community Hospital
Other
Eligibility
18 Years to 90 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 15, 2023 · Synced Jul 21, 2026, 6:07 PM EDT
Terminated Phase 2 Interventional

Pemziviptadil (PB1046), a Long-acting, Sustained Release Human VIP Analogue, Intended to Provide Clinical Improvement to Hospitalized COVID-19 Patients at High Risk for Rapid Clinical Deterioration and Acute Respiratory Distress Syndrome (ARDS).

NCT04433546
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Coronavirus, Hypoxic Respiratory Failure, Hypoxemic Respiratory Failure, Respiratory Complication, Respiratory Insufficiency, Cardiac Dysfunction, Pneumonia, Pulmonary Edema, Pulmonary Inflammation, Respiratory Failure, Cytokine Storm, COVID 19, SARS-CoV-2, Cardiac Event, Cardiac Complication, Cardiac Failure, Cardiac Infarct
Interventions
Pemziviptadil (PB1046), Low Dose (10 mg) Control
Drug
Lead sponsor
PhaseBio Pharmaceuticals Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
4
States / cities
Jacksonville, Florida • Sarasota, Florida • Kansas City, Kansas + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2020 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Not applicable Interventional

Novel Arm Restraint For Critically Ill Patients To Reduce Immobility, Sedation, Agitation and Cognitive Impairment

NCT04067622
View directory record Official record
Conditions
Acute Respiratory Failure, Encephalopathy, ARDS, Sepsis, Critical Illness
Interventions
Exersides
Device
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
3
States / cities
San Diego, California • Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Mar 9, 2022 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Phase 4 Interventional

The Effectiveness of Oral Dexamethasone for Acute Bronchiolitis

NCT00119002
View directory record Official record
Conditions
Bronchiolitis, Viral
Interventions
dexamethasone, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
2 Months to 11 Months
Enrollment
598 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 13, 2008 · Synced Jul 21, 2026, 6:07 PM EDT
Not listed No phase listed Observational

Effect of Apollo Wearable on Long COVID-19 Symptoms.

NCT06097442
View directory record Official record
Conditions
Post-acute Sequelae of SARS-COV-2 Infection
Interventions
Not listed
Lead sponsor
The Board of Medicine
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 26, 2023 · Synced Jul 21, 2026, 6:07 PM EDT
Recruiting No phase listed Observational

Long-term Impact of Infection With Novel Coronavirus (COVID-19)

NCT04362150
View directory record Official record
Conditions
COVID
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 100 Years
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 11, 2025 · Synced Jul 21, 2026, 6:07 PM EDT
Completed No phase listed Observational

Predictors of Severe COVID-19 Outcomes

NCT04388813
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, COVID-19
Interventions
Not listed
Lead sponsor
Verily Life Sciences LLC
Industry
Eligibility
18 Years and older
Enrollment
494 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
8
States / cities
Tucson, Arizona • Los Angeles, California • Chicago, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated May 27, 2024 · Synced Jul 21, 2026, 6:07 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Long COVID-19 [11C]CPPC Study

NCT06223971
View directory record Official record
Conditions
COVID Long-Haul
Interventions
[11C]CPPC Injection
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Jul 21, 2026, 6:07 PM EDT