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ClinicalTrials.gov public records Last synced Sep 26, 2026, 4:16 PM EDT

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Showing 1–24 of 3,392 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Respiratory Viral Infections Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A PHASE 2B PLACEBO-CONTROLLED, RANDOMIZED STUDY OF A RESPIRATORY SYNCYTIAL VIRUS (RSV) VACCINE IN PREGNANT WOMEN

NCT04032093
View directory record Official record
Conditions
Respiratory Tract Infection
Interventions
RSV vaccine, Placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 49 Years · Female only
Enrollment
1,153 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
145
States / cities
Birmingham, Alabama • Cullman, Alabama • Glendale, Arizona + 62 more
Source: ClinicalTrials.gov public record
Updated Oct 17, 2022 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Not applicable Interventional Results available

RECOVER-NEURO: Platform Protocol to Measure the Effects of Cognitive Dysfunction Interventions on Long COVID Symptoms

NCT05965752
View directory record Official record
Conditions
Long COVID, Long COVID-19, Long COVID19
Interventions
BrainHQ/Active Comparator Activity, BrainHQ, PASC CoRE, tDCS-active, tDCS-sham
Other · Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
328 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
24
States / cities
Phoenix, Arizona • Tucson, Arizona • Los Angeles, California + 20 more
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced Sep 26, 2026, 4:16 PM EDT
Withdrawn No phase listed Observational

Cardiovascular Manifestations of COVID-19

NCT04701515
View directory record Official record
Conditions
COVID-19
Interventions
Chart review
Other
Lead sponsor
Methodist Health System
Other
Eligibility
18 Years and older
Timeline
2023
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Sep 26, 2026, 4:16 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 Sep 26, 2026, 4:16 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Vaccine Observation to Include All Communities for Equitable Science

NCT04770649
View directory record Official record
Conditions
Vaccine Response Impaired, Vaccine Adverse Reaction
Interventions
COVID-19 vaccine
Biological
Lead sponsor
Persephone Biosciences
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 4, 2024 · Synced Sep 26, 2026, 4:16 PM EDT
Completed No phase listed Observational

Estimating Prevalence of COVID-19 Infection and SARS-CoV-2 Antibodies in MS Patients

NCT04682548
View directory record Official record
Conditions
Multiple Sclerosis, Covid19
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 60 Years
Enrollment
920 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 2, 2022 · Synced Sep 26, 2026, 4:16 PM EDT
Active, not recruiting Phase 2 Interventional

High vs. Standard Dose Influenza Vaccine in Adult SOT Recipients

NCT04613206
View directory record Official record
Conditions
Immunization; Infection, Transplantation Infection, Influenza, Solid Organ Transplant
Interventions
High Dose Quadrivalent Inactivated Influenza Vaccine, Standard Dose Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
396 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Sep 26, 2026, 4:16 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

RADx-UP CDCC Rapid Research Pilot Program "Culturally-relevant Community Connections (C3) to Increase COVID-19 Testing

NCT05918952
View directory record Official record
Conditions
COVID-19
Interventions
Covid-19 Antibody Test, Short Clip videos
Diagnostic Test · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
327 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Greensboro, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 1, 2026 · Synced Sep 26, 2026, 4:16 PM EDT
Not listed Phase 2 Interventional

A Phase II Study in Patients With Moderate to Severe ARDS Due to COVID-19

NCT04780685
View directory record Official record
Conditions
Covid19
Interventions
hMSC
Biological
Lead sponsor
Stemedica Cell Technologies, Inc.
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
Fullerton, California • Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jul 7, 2022 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Demonstrate the Superiority of the Immune Response of Adjuvanted Influenza Vaccine Induced in an Adult Population

NCT00377585
View directory record Official record
Conditions
Influenza
Interventions
Fluarix, adjuvanted influenza vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
3,350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
10
States / cities
Clearwater, Florida • Coral Gables, Florida • Milford, Massachusetts + 7 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2017 · Synced Sep 26, 2026, 4:16 PM EDT
Completed No phase listed Observational

Stellate Ganglion Block to Treat Long COVID 19 Case Series

NCT05812209
View directory record Official record
Conditions
Long COVID, Long Covid19, Post-COVID-19 Syndrome, Post Acute COVID-19 Syndrome, Dysautonomia, Anosmia, Dysgeusia, Brain Fog, Muscle Pain, Shortness of Breath, Dizziness, Fatigue Post Viral, Cough, Menstrual Cycle Abnormal, Pain
Interventions
Stellate Ganglion Block
Procedure
Lead sponsor
Metamorphosis LTD
Other
Eligibility
Not listed
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Cañon City, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 12, 2023 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Not applicable Interventional

A Pilot rTMS Trial for Neuropsychiatric Symptoms of Long-COVID

NCT06586398
View directory record Official record
Conditions
Long Covid-19, PASC Post Acute Sequelae of COVID 19, Brain Fog, Fatigue
Interventions
rTMS
Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 26, 2026, 4:16 PM EDT
Terminated Phase 1 Interventional Results available

Dose Escalation Trial of Intra-Tumoral Injection of NIS Measles Virus in Combination With Atezolizumab

NCT02919449
View directory record Official record
Conditions
Recurrent Non-Small Cell Lung Cancer
Interventions
MV-NIS, Atezolizumab
Biological
Lead sponsor
Vyriad, Inc.
Industry
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 20, 2023 · Synced Sep 26, 2026, 4:16 PM EDT
Active, not recruiting No phase listed Observational

Neuropsychiatric Post-Acute Sequelae of SARS-CoV-2 (PASC) Using TSPO Positron Emission Tomography (PET) and MRI

NCT05615415
View directory record Official record
Conditions
Neuropsychiatric Post-Acute Sequelae of SARS-CoV-2 Infection
Interventions
PET Tracer, MRI Tracer, 3T PET/MRI
Drug · Device
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Timeline
2022 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 27, 2025 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study of Exclusion Criteria in a University Population

NCT01472536
View directory record Official record
Conditions
Influenza
Interventions
Sequestration
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
1,400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 25, 2016 · Synced Sep 26, 2026, 4:16 PM EDT
Terminated Phase 2 Interventional

Can SARS-CoV-2 Viral Load and COVID-19 Disease Severity be Reduced by Resveratrol-assisted Zinc Therapy

NCT04542993
View directory record Official record
Conditions
Covid19, SARS-CoV Infection
Interventions
Zinc Picolinate, Resveratrol, Zinc Picolinate Placebo, Resveratrol Placebo
Dietary Supplement
Lead sponsor
Swedish Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 28, 2022 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

COVID-19 Treatment Cascade Optimization Study

NCT05305443
View directory record Official record
Conditions
COVID-19
Interventions
Navigation Services, Brief Counseling, Critical Dialogue, Referral and Digital Brochure
Behavioral
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
18 Years and older
Enrollment
554 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
East Saint Louis, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 25, 2024 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Phase 3 Interventional Results available

Full Dose Heparin Vs. Prophylactic Or Intermediate Dose Heparin in High Risk COVID-19 Patients

NCT04401293
View directory record Official record
Conditions
Sars-CoV2, COVID
Interventions
Enoxaparin, Prophylactic/Intermediate Dose Enoxaparin
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
257 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
6
States / cities
Newark, New Jersey • Bay Shore, New York • Huntington, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 21, 2021 · Synced Sep 26, 2026, 4:16 PM EDT
Terminated Phase 3 Interventional Results available

A Study of Brexanolone for Acute Respiratory Distress Syndrome (ARDS) Due to Coronavirus Disease 2019 (COVID-19)

NCT04537806
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, COVID-19
Interventions
Brexanolone, Placebo
Drug
Lead sponsor
Sage Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
9
States / cities
Fresno, California • Augusta, Georgia • Boston, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2022 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Not applicable Interventional

Fatigability in Long COVID-19

NCT05699538
View directory record Official record
Conditions
Long COVID
Interventions
Minimal-Dose Home-Based Resistance Exercise
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
50 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Digital Applications to Monitor Novel Coronavirus Disease and Response in Colombia - Syndromic and Vaccination Surveillance

NCT05764174
View directory record Official record
Conditions
Vaccination Refusal, COVID-19
Interventions
Factual messages, Narrative message, Mixed message
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older
Enrollment
2,409 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 9, 2023 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Diesel Exhaust Followed by Administration of Nasal Spray Flu Vaccine on Individuals With & Without Allergies

NCT00617110
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
live attenuated influenza virus (LAIV) with clean air, LAIV and diesel exhaust particles
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 35 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 2, 2015 · Synced Sep 26, 2026, 4:16 PM EDT
Withdrawn Phase 2 Interventional

Direct Topical Lung T3 Treatment to Improve Outcome & Sequelae of COVID-19 Acute Respiratory Distress Syndrome

NCT04725110
View directory record Official record
Conditions
Covid19, SARS-CoV Infection, ARDS, ARDS, Human
Interventions
Instilled T3, Placebo Therapy
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 26, 2026, 4:16 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Trivalent rHA Dose Escalation Study in Elderly Subjects

NCT00170443
View directory record Official record
Conditions
Influenza
Interventions
rHAO Trivalent Influenza Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years to 80 Years
Enrollment
399 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2004
U.S. locations
3
States / cities
Rochester, New York • Cincinnati, Ohio • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 11, 2011 · Synced Sep 26, 2026, 4:16 PM EDT