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ClinicalTrials.gov public records Last synced Oct 14, 2026, 10:20 PM EDT

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Showing 505–528 of 3,925 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Respiratory Tract Infections (RTI) Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immunogenicity of GlaxoSmithKline Biologicals' Influenza Vaccine GSK3206641A Administered in Adults 18 to 64 Years of Age and 65 Years of Age and Older

NCT04789577
View directory record Official record
Conditions
Influenza, Human
Interventions
FLU-Q-PAN H7N9 Formulation 1, FLU-Q-PAN H7N9 Formulation 2, FLU-Q-PAN H7N9 Formulation 3, AS03B, AS03A, Placebo
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
833 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
8
States / cities
Stockbridge, Georgia • Meridian, Idaho • Cary, North Carolina + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 10, 2023 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of Quadrivalent Influenza Vaccine Among Adults

NCT01218646
View directory record Official record
Conditions
Influenza
Interventions
Investigational Quadrivalent Inactivated Influenza Vaccine, No Preservative, Investigational Trivalent Inactivated Influenza Vaccine, No Preservative, Fluzone®: 2010-2011 Trivalent Inactivated Influenza Vaccine, No Preservative
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
739 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
12
States / cities
Hoover, Alabama • South Miami, Florida • Springfield, Missouri + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2013 · Synced Oct 14, 2026, 10:20 PM EDT
Completed No phase listed Observational

Dornase Alfa Administered to Patients With COVID-19 (DACOVID)

NCT04387786
View directory record Official record
Conditions
COVID-19, Mechanical Ventilation
Interventions
Dornase Alfa
Drug
Lead sponsor
Feinstein Institute for Medical Research
Other
Eligibility
18 Years to 85 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Manhasset, New York
Source: ClinicalTrials.gov public record
Updated Nov 13, 2020 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 2 Interventional Results available

Atovaquone for Treatment of COVID-19

NCT04456153
View directory record Official record
Conditions
COVID-19
Interventions
Experimental Group, Placebo Group
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 14, 2021 · Synced Oct 14, 2026, 10:20 PM EDT
Not listed Not applicable Interventional

Using a Community-level Just-in-Time Adaptive Intervention to Address COVID-19 Testing Disparities

NCT05606003
View directory record Official record
Conditions
COVID-19
Interventions
Multi-Level Multi-Component Intervention (MLI), Community Just-In-Time Adaptive Intervention (Community JITAI)
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
1,280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
3
States / cities
Brownsville, Texas • Houston, Texas • Tyler, Texas
Source: ClinicalTrials.gov public record
Updated Nov 4, 2022 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of an MF59-Adjuvanted Influenza Vaccine in Older Adults

NCT04576702
View directory record Official record
Conditions
Influenza, Human
Interventions
Investigational aIIV4c, IIV4c, aIIV4, RIV4
Biological
Lead sponsor
Seqirus
Industry
Eligibility
50 Years and older
Enrollment
471 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
21
States / cities
Mobile, Alabama • Tempe, Arizona • Jacksonville, Florida + 17 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2024 · Synced Oct 14, 2026, 10:20 PM EDT
Completed No phase listed Observational

Intranasal Lavage With Hypochlorous Acid Safely Reduces the Symptoms in the Ambulatory Patient With COVID-19.

NCT05950295
View directory record Official record
Conditions
COVID-19
Interventions
Intranasal lavage with hypochlorous acid solution
Other
Lead sponsor
Monique Lisa Abner
Other
Eligibility
18 Years and older
Enrollment
88 participants
Timeline
2020 – 2021
U.S. locations
1
States / cities
Reading, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 18, 2023 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Not applicable Interventional

Simultaneously Implementing Pathways for Improving Asthma, Pneumonia, and Bronchiolitis Care for Hospitalized Children

NCT05206695
View directory record Official record
Conditions
Asthma, Pneumonia, Bronchiolitis
Interventions
Multi-condition Pathway Intervention
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
Up to 17 Years
Enrollment
11,760 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Oct 14, 2026, 10:20 PM EDT
Terminated Phase 2Phase 3 Interventional

Trial of Iseganan in Prevention of Ventilator-Associated Pneumonia

NCT00118781
View directory record Official record
Conditions
Pneumonia
Interventions
iseganan hydrochloride
Drug
Lead sponsor
IntraBiotics Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
900 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 19, 2005 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

A Trial of Point of Care Information in Ambulatory Pediatrics

NCT00368823
View directory record Official record
Conditions
Acute Otitis Media, Allergic Rhinitis, Sinusitis, Constipation, Pharyngitis, Croup, Urticaria, Bronchiolitis
Interventions
Electronic point-of-care delivery system
Device
Lead sponsor
University of Washington
Other
Eligibility
0 Years and older
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2003
U.S. locations
2
States / cities
Seattle, Washington • Skagit Valley, Washington
Source: ClinicalTrials.gov public record
Updated Aug 29, 2006 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Piloting +Connection is Medicine / The Healing Spirits Program

NCT05424679
View directory record Official record
Conditions
Mental Health Issue, Depressive Symptoms, Anxiety
Interventions
Safety Planning Intervention, Caring Contacts
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
11 Years and older
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
4
States / cities
Chinle, Arizona • Tuba City, Arizona • Whiteriver, Arizona + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2024 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 1 Interventional

Trial of Combination Therapy to Treat COVID-19 Infection

NCT04482686
View directory record Official record
Conditions
COVID, Covid-19, Corona Virus Infection, Coronavirus Infection, Coronavirus-19, SARS-CoV2, SARS-CoV Infection
Interventions
Ivermectin, Doxycycline Hcl, Zinc, Vitamin D3, Vitamin C
Drug · Dietary Supplement
Lead sponsor
ProgenaBiome
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Sep 24, 2024 · Synced Oct 14, 2026, 10:20 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 14, 2008 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 1 Interventional

Effect of Honey and Dextromethorphan on Nocturnal Cough and Sleep

NCT00127686
View directory record Official record
Conditions
Cough, Respiratory Tract Infections
Interventions
Dextromethorphan, Buckwheat Honey
Drug
Lead sponsor
Penn State University
Other
Eligibility
2 Years to 18 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 24, 2017 · Synced Oct 14, 2026, 10:20 PM EDT
Not listed No phase listed Observational

Severe Acute Respiratory Infection - Preparedness (COVID-19 and Influenza)

NCT04786301
View directory record Official record
Conditions
Pneumonia, Viral
Interventions
Not listed
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
1,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2021 · Synced Oct 14, 2026, 10:20 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Influenza Vaccine Post Allogeneic Transplant

NCT01215981
View directory record Official record
Conditions
Hematopoietic Stem Cell Transplant, Hematologic Malignancy
Interventions
Influenza vaccine
Biological
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
6 Months and older
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 28, 2017 · Synced Oct 14, 2026, 10:20 PM EDT
Completed No phase listed Observational

Study of Knowledge Translation of Clinical Practice Guidelines for Ventilator Associated Pneumonia

NCT00434460
View directory record Official record
Conditions
Ventilator Associated Pneumonia
Interventions
Education
Behavioral
Lead sponsor
Canadian Critical Care Trials Group
Other
Eligibility
17 Years and older
Enrollment
1,320 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 1, 2010 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Beta-glucan and Immune Response to Influenza Vaccine

NCT05074303
View directory record Official record
Conditions
Healthy Aging
Interventions
Influenza Vaccine, Beta-glucan, Placebo
Biological · Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
50 Years to 100 Years
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 6, 2025 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 3 Interventional Results available

Study of Multiple Candidate Agents for the Treatment of COVID-19 in Hospitalized Patients

NCT04590586
View directory record Official record
Conditions
COVID-19
Interventions
Standard of care, Apremilast, Apremilast placebo, Lanadelumab, Lanadelumab placebo, Zilucoplan, Zilucoplan placebo
Drug
Lead sponsor
Amgen
Industry
Eligibility
18 Years and older
Enrollment
515 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
21
States / cities
Anniston, Alabama • Bakersfield, California • Chula Vista, California + 17 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2022 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

PET Imaging of Endotoxin-induced iNOS Activation

NCT01407796
View directory record Official record
Conditions
Pneumonia
Interventions
Endotoxin (E. coli O:113, Reference Endotoxin), [18F](+/-)NOS
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
19 Years to 44 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 21, 2014 · Synced Oct 14, 2026, 10:20 PM EDT
Withdrawn Phase 1Phase 2 Interventional

Abatacept for Patients With COVID-19 and Respiratory Distress

NCT04477642
View directory record Official record
Conditions
COVID-19
Interventions
Abatacept
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 20, 2020 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A/H5N1in Adult - Aventis

NCT00115986
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/H5N1 Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
452 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
3
States / cities
Torrance, California • Baltimore, Maryland • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 23, 2013 · Synced Oct 14, 2026, 10:20 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Collection of Serum Samples From Children and Older Adults Receiving the 2019-2020 Formulations of Fluzone® Quadrivalent and Fluzone® High-Dose Influenza Vaccines, Respectively

NCT04109222
View directory record Official record
Conditions
Influenza
Interventions
Fluzone Quadrivalent vaccine, no preservative (0.5-mL), 2019-2020 formulation, Fluzone High-Dose vaccine, 2019-2020 formulation
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 83 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
2
States / cities
Bardstown, Kentucky • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 12, 2025 · Synced Oct 14, 2026, 10:20 PM EDT
Completed No phase listed Observational

Long-term Impact in Intensive Care Survivors of Coronavirus Disease (COVID-19)

NCT05175339
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
26 participants
Timeline
2021 – 2023
U.S. locations
2
States / cities
Baltimore, Maryland • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 18, 2023 · Synced Oct 14, 2026, 10:20 PM EDT