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ClinicalTrials.gov public records Last synced Oct 21, 2026, 2:40 PM EDT

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Showing 121–144 of 2,349 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Covid19 Clear all
Completed No phase listed Observational

A Study to Understand How the Use of Paxlovid Affected Healthcare Use in People With Pre-existing Conditions.

NCT07090486
View directory record Official record
Conditions
COVID-19
Interventions
nirmatrelvir-ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
14,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Oct 21, 2026, 2:40 PM EDT
Completed No phase listed Observational

Mortality and Morbidity Associated With New Onset Acute Kidney Injury in Critically Ill COVID-19 Infection Patients

NCT05964088
View directory record Official record
Conditions
Acute Kidney Injury
Interventions
Not listed
Lead sponsor
Arrowhead Regional Medical Center
Other
Eligibility
18 Years to 100 Years
Enrollment
267 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Colton, California
Source: ClinicalTrials.gov public record
Updated Jul 27, 2023 · Synced Oct 21, 2026, 2:40 PM EDT
Completed No phase listed Observational

The Impact of the COVID-19 Pandemic on Eating Behavior and Weight Change

NCT04896060
View directory record Official record
Conditions
COVID-19, Obesity
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 99 Years
Enrollment
5,056 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 21, 2026, 2:40 PM EDT
Completed No phase listed Observational

An Observational Study of Patients With Coronavirus Disease 2019

NCT04331886
View directory record Official record
Conditions
COVID-19, Coronavirus
Interventions
Not listed
Lead sponsor
Target PharmaSolutions, Inc.
Industry
Eligibility
18 Years and older
Enrollment
199 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Oct 21, 2026, 2:40 PM EDT
Enrolling by invitation No phase listed Observational

Assessing the System for High-Intensity Evaluation During Radiotherapy During Changes in Response to COVID-19

NCT04357574
View directory record Official record
Conditions
COVID-19, Cancer
Interventions
Telehealth
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 6, 2026 · Synced Oct 21, 2026, 2:40 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

A Pilot Study for the Collection Of Vocalized, Individual Digital Cough Sound Recordings to Screen for COVID-19

NCT04864535
View directory record Official record
Conditions
Covid19
Interventions
Recordings of cough sounds from adults
Diagnostic Test
Lead sponsor
ResApp Health Limited
Industry
Eligibility
21 Years and older
Enrollment
1,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 30, 2023 · Synced Oct 21, 2026, 2:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

COPD Circuit Exercise

NCT05395390
View directory record Official record
Conditions
OSA, Covid19, Residual Symptoms of COVID 19, COPD
Interventions
Exercise (Resistance Training
Behavioral
Lead sponsor
Texas A&M University
Other
Eligibility
30 Years to 85 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Oct 21, 2026, 2:40 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Surgical Telemedicine in the COVID-19 Pandemic Era

NCT04376710
View directory record Official record
Conditions
COVID, Surgery
Interventions
Completion of pre-pandemic survey, Completion of survey after peak of pandemic, Completion of post telemedicine encounter survey
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
31 Days to 18 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 28, 2020 · Synced Oct 21, 2026, 2:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Availability of COVID-19 Testing on Choice to Isolate and Socially Distance

NCT04459520
View directory record Official record
Conditions
COVID-19
Interventions
Positive COVID Test Result - Hypothetical Scenario, Negative COVID Test Result - Hypothetical Scenario, Unavailable COVID Test Result - Hypothetical Scenario
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 110 Years
Enrollment
1,400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2020 · Synced Oct 21, 2026, 2:40 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

COVID-19 Close Contact Self-Testing Study

NCT04847479
View directory record Official record
Conditions
Covid19
Interventions
COVID-19 self-test, COVID-19 test referral
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Oct 21, 2026, 2:40 PM EDT
Terminated Not applicable Interventional Results available

Study Assessing Vagus Nerve Stimulation in CoViD-19 Respiratory Symptoms

NCT04382391
View directory record Official record
Conditions
COVID, Corona Virus Infection, Respiratory Failure, Respiratory Distress Syndrome, Adult, ARDS, Human, SARS (Severe Acute Respiratory Syndrome)
Interventions
gammaCore® Sapphire (non-invasive vagus nerve stimulator), Standard of care therapies
Device · Other
Lead sponsor
Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 1, 2024 · Synced Oct 21, 2026, 2:40 PM EDT
Completed Phase 4 Interventional Results available

Clinical Trial of Niagen to Examine Recovery in People With Persistent Cognitive and Physical Symptoms After COVID-19

NCT04809974
View directory record Official record
Conditions
Covid19, Sequelae of; Infection, Cognitive Symptom
Interventions
Niagen
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Oct 21, 2026, 2:40 PM EDT
Completed Not applicable Interventional Results available

Test to Stay in School: COVID-19 Testing Following Exposure in School Communities

NCT05052580
View directory record Official record
Conditions
Covid19
Interventions
COVID-19 Testing
Other
Lead sponsor
Duke University
Other
Eligibility
Not listed
Enrollment
4,733 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 27, 2023 · Synced Oct 21, 2026, 2:40 PM EDT
Completed No phase listed Observational

Characterizing the Perioperative Epidemiology of SARS-CoV-2 (COVID-19) Spread for Quality Improvement of Perioperative Infection Control Program

NCT04443803
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
Randy Loftus
Other
Eligibility
18 Years to 120 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 12, 2021 · Synced Oct 21, 2026, 2:40 PM EDT
Completed Phase 2 Interventional Results available

Study of Oral Ibrutinib Capsules to Assess Respiratory Failure in Adult Participants With Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) and Pulmonary Injury

NCT04375397
View directory record Official record
Conditions
CoronaVirus Induced Disease-2019 (COVID-19)
Interventions
Ibrutinib, Placebo
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
9
States / cities
Stanford, California • Washington D.C., District of Columbia • Ft. Pierce, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2022 · Synced Oct 21, 2026, 2:40 PM EDT
Completed Phase 2 Interventional Results available

Systems Analyses of the Immune Response to the Seasonal Influenza Vaccine

NCT04025580
View directory record Official record
Conditions
Healthy Volunteer
Interventions
Flucelvax, Fluvirin, Fluzone High Dose
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 2, 2024 · Synced Oct 21, 2026, 2:40 PM EDT
Terminated Phase 1 Interventional

Study Assessing the Feasibility, Safety and Efficacy of Genetically Engineered Glucocorticoid Receptor Knock Out Virus Specific CTL Lines for Viral Infections in Immunosuppressed Cancer Patients

NCT05101213
View directory record Official record
Conditions
Adenovirus Infection, BK Virus Infection, Cytomegaloviral Infection, Hematopoietic and Lymphoid Cell Neoplasm, JC Virus Infection, Malignant Solid Neoplasm, Symptomatic COVID-19 Infection Laboratory-Confirmed
Interventions
Virus-specific Cytotoxic T-lymphocytes
Biological
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Oct 21, 2026, 2:40 PM EDT
Terminated Not applicable Interventional

Pilot Randomized Study of RD-X19 Tx Device in Subjects With PCC (Long Covid) in the Outpatient Setting

NCT06113679
View directory record Official record
Conditions
Post COVID-19 Condition (PCC)
Interventions
RDX-19
Device
Lead sponsor
EmitBio Inc.
Industry
Eligibility
22 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
2
States / cities
East Amherst, New York • Milan, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 5, 2024 · Synced Oct 21, 2026, 2:40 PM EDT
Terminated Phase 2 Interventional Results available

A Study of Hydroxychloroquine vs Placebo to Prevent COVID-19 Infection in Patients Receiving Radiotherapy

NCT04381988
View directory record Official record
Conditions
COVID-19, Cancer
Interventions
Hydroxychloroquine, Placebo, Radiation therapy
Drug · Other · Radiation
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 27, 2021 · Synced Oct 21, 2026, 2:40 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

COVID-19 and Cancer Consortium Registry

NCT04354701
View directory record Official record
Conditions
COVID-19, Invasive Malignancy (Any Type)
Interventions
Web-based REDCap survey
Other
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older
Enrollment
19,275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 9, 2024 · Synced Oct 21, 2026, 2:40 PM EDT
Terminated Phase 1 Interventional Results available

Camostat With Bicalutamide for COVID-19

NCT04652765
View directory record Official record
Conditions
Covid19, SARS-CoV Infection, Coronavirus Infection
Interventions
Camostat Mesilate, Bicalutamide 150 mg
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
60 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 6, 2023 · Synced Oct 21, 2026, 2:40 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

PHASE 1 SARS-COV-2-Spike-Ferritin-Nanoparticle (SpFN) Vaccine With ALFQ Adjuvant for Prevention of COVID-19

NCT04784767
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
25 µg SpFN_1B-06-PL + ALFQ (QS21 Adjuvant), Sodium chloride, USP, for injection (0.9% NaCl), 50 µg SpFN_1B-06-PL + ALFQ (QS21 Adjuvant)
Biological · Drug
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 55 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 17, 2025 · Synced Oct 21, 2026, 2:40 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

COVID-19 In-vitro Diagnostic Test and Androgen Receptor Gene Expression

NCT04530500
View directory record Official record
Conditions
Covid19, Androgen Receptor Gene Overexpression
Interventions
COVID-19 Androgen Sensitivity Test (CoVAST)
Genetic
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 90 Years · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
2
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated May 8, 2024 · Synced Oct 21, 2026, 2:40 PM EDT
Completed No phase listed Observational

Assessment of Exam Findings in Coronavirus Disease 2019 (COVID-19) With Point-of-Care Ultrasonography (POCUS)

NCT04339998
View directory record Official record
Conditions
Coronavirus Infection, COVID, Covid-19, SARS-CoV-2
Interventions
Point-of-Care Ultrasonography (POCUS)
Diagnostic Test
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
Minneapolis, Minnesota • Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 4, 2023 · Synced Oct 21, 2026, 2:40 PM EDT