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ClinicalTrials.gov public records Last synced Oct 21, 2026, 11:27 AM EDT

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Showing 1–24 of 1,043 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Novel Coronavirus Pneumonia Clear all
Completed No phase listed Observational Accepts healthy volunteers

Retail COVID-19 Study

NCT06761612
View directory record Official record
Conditions
COVID - 19
Interventions
FDA approved mRNA vaccines
Biological
Lead sponsor
Biomedical Advanced Research and Development Authority
Federal
Eligibility
3 Years and older
Enrollment
2,519 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
20
States / cities
Kissimmee, Florida • Chicago, Illinois • Oak Park, Illinois + 15 more
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Rayaldee for Treating Mild to Moderate COVID-19

NCT04551911
View directory record Official record
Conditions
COVID-19, Coronavirus, SARS-CoV2 Infection
Interventions
Rayaldee, Placebo
Drug
Lead sponsor
OPKO Health, Inc.
Industry
Eligibility
18 Years and older
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
10
States / cities
San Francisco, California • Miami, Florida • Evanston, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated May 28, 2024 · Synced Oct 21, 2026, 11:27 AM EDT
Terminated Phase 3 Interventional Results available

Azithromycin for COVID-19 Treatment in Outpatients Nationwide

NCT04332107
View directory record Official record
Conditions
COVID-19, SARS-CoV-2
Interventions
Azithromycin, Placebos
Drug
Lead sponsor
Thomas M. Lietman
Other
Eligibility
18 Years and older
Enrollment
263 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Oct 21, 2026, 11:27 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

A Nurse-Community Health Worker-Family Partnership Model: Addressing Uptake of COVID-19 Testing and Control Measures

NCT04832919
View directory record Official record
Conditions
COVID-19
Interventions
Nurse-Community-Family Partnership Intervention
Behavioral
Lead sponsor
New York University
Other
Eligibility
10 Years and older
Enrollment
392 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 Dec 15, 2022 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Randomized Trial Evaluating a mRNA-VLP Vaccine's Immunogenicity and Safety for COVID-19

NCT06147063
View directory record Official record
Conditions
COVID-19, SARS-CoV-2 Infection
Interventions
AZD9838, Licensed SARS-CoV-2 mRNA vaccine, AZD6563
Biological
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
243 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
5
States / cities
Long Beach, California • Rolling Hills Estates, California • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Immunogenicity and Safety of mRNA Vaccine Boosters for SARS-CoV-2 (COVID-19) Variants

NCT04927065
View directory record Official record
Conditions
SARS-CoV-2
Interventions
mRNA-1273.211, mRNA-1273, mRNA-1273.617.2, mRNA-1273.213, mRNA-1273.529, mRNA-1273.214, mRNA-1273.222, mRNA-1273.815, mRNA-1273.231
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years and older
Enrollment
5,161 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
23
States / cities
Sacramento, California • Hollywood, Florida • Jacksonville, Florida + 18 more
Source: ClinicalTrials.gov public record
Updated Feb 28, 2025 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of RNA-based Vaccines Against SARS-CoV-2 Variants in Healthy Participants

NCT05004181
View directory record Official record
Conditions
SARS-CoV-2 Infection, COVID-19, SARS-CoV-2 Acute Respiratory Disease, SARS (Disease)
Interventions
BNT162b2, Multivalent BNT162b2 (B.1.1.7 + B.1.617.2), Monovalent BNT162b2 (B.1.1.7), Monovalent BNT162b2 (B.1.617.2), Monovalent BNT162b2 (B.1.1.529.1), Observational
Biological · Other
Lead sponsor
BioNTech SE
Industry
Eligibility
18 Years to 85 Years
Enrollment
1,380 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
14
States / cities
Long Beach, California • San Diego, California • Milford, Connecticut + 10 more
Source: ClinicalTrials.gov public record
Updated Nov 22, 2024 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Early Phase 1 Interventional

PET/CT Imaging in COVID-19 Patients

NCT04376593
View directory record Official record
Conditions
COVID-19, SARS-CoV-2 Infection
Interventions
18F-αvβ6-BP
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 21, 2026, 11:27 AM EDT
Terminated Phase 2 Interventional

A Study to Evaluate OP-101 (Dendrimer N-acetyl-cysteine) in Severe Coronavirus Disease 2019 (COVID-19) Patients

NCT04458298
View directory record Official record
Conditions
COVID-19
Interventions
OP-101, Placebo
Drug
Lead sponsor
Ashvattha Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
8
States / cities
Loma Linda, California • Fort Lauderdale, Florida • Jacksonville, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2023 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study of COVID 19 Convalescent Plasma in High Risk Patients With COVID 19 Infection

NCT04392232
View directory record Official record
Conditions
Coronavirus, COVID-19, Convalescent Plasma
Interventions
Convalescent Plasma
Drug
Lead sponsor
TriHealth Inc.
Other
Eligibility
16 Years and older
Enrollment
159 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
2
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 7, 2021 · Synced Oct 21, 2026, 11:27 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

A Registry Study of COVID-19 Serologic and Virologic Testing to Accelerate Recovery and Transition

NCT04573634
View directory record Official record
Conditions
Covid19, SARS-CoV Infection
Interventions
Not listed
Lead sponsor
Jill M Kolesar
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Sep 14, 2022 · Synced Oct 21, 2026, 11:27 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

COVID-19 Knowledge, Attitudes, Practices and Perceived Risk: Cross Sectional Mixed Methods

NCT07021716
View directory record Official record
Conditions
COVID - 19, Multiple Sclerosis
Interventions
No Interventions
Other
Lead sponsor
Hunter College of City University of New York
Other
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 15, 2025 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Phase 2 Interventional Results available

Multiple Dosing of Mesenchymal Stromal Cells in Patients With ARDS (COVID-19)

NCT04466098
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, ARDS (Moderate or Severe), COVID-19 Pneumonia
Interventions
Mesenchymal stromal cells, Placebo
Biological · Other
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years to 80 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
2
States / cities
Minneapolis, Minnesota • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 29, 2025 · Synced Oct 21, 2026, 11:27 AM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

A Phase 3 Randomized Double Blind Efficacy and Safety Study of Oral Polio Vaccine and NA-831 for Covid-19

NCT04540185
View directory record Official record
Conditions
Covid19, SARS (Severe Acute Respiratory Syndrome), SARS-CoV Infection, SARS-CoV-2
Interventions
Biological: oral polio vaccine, Comparable Placebo, NA-831, Comparable Placebo of drug, Combination of oral polio vaccine and NA-831, Comparable Placebo of Oral Polio Vaccine and Placebo of drug
Biological · Drug · Combination Product
Lead sponsor
Biomed Industries, Inc.
Industry
Eligibility
18 Years and older
Enrollment
3,600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
8
States / cities
Los Angeles, California • Orange, California • Palo Alto, California + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 9, 2020 · Synced Oct 21, 2026, 11:27 AM EDT
Withdrawn Phase 2 Interventional

COVID-19 ThromboprophylaXIs Study of Novel FXIa Inhibitor Frunexian (EP-7041) in ICU Patients

NCT05040776
View directory record Official record
Conditions
Thrombopenia, Covid19
Interventions
EP-7041 Injection
Drug
Lead sponsor
eXIthera Pharmaceuticals
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 5, 2023 · Synced Oct 21, 2026, 11:27 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

A Study to Learn About a COVID-19 Vaccine in Healthy Adults 18 Through 64 Years of Age

NCT07730450
View directory record Official record
Conditions
COVID-19 Vaccines
Interventions
BNT162b2 Vaccine, Tdap Vaccine
Biological
Lead sponsor
BioNTech SE
Industry
Eligibility
18 Years to 64 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
5
States / cities
Walnut Creek, California • Miami Lakes, Florida • Honolulu, Hawaii + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2026 · Synced Oct 21, 2026, 11:27 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Parkinson's Disease and Experiences Throughout the COVID-19 Pandemic

NCT04720118
View directory record Official record
Conditions
Parkinson Disease, Covid19, Satisfaction, Patient, Quality of Life
Interventions
No Intervention
Other
Lead sponsor
Towson University
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Towson, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 1, 2021 · Synced Oct 21, 2026, 11:27 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Characterizing SARS-CoV-2-specific Immunity in Individuals Who Have Recovered From COVID-19

NCT04403880
View directory record Official record
Conditions
SARS-CoV-2, COVID-19
Interventions
Sample collection
Other
Lead sponsor
HIV Vaccine Trials Network
Network
Eligibility
18 Years and older
Enrollment
760 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
21
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Oct 21, 2026, 11:27 AM EDT
Terminated Phase 2 Interventional Results available

Safety and Efficacy of Niclosamide in Patients With COVID-19 With Gastrointestinal Infection

NCT04858425
View directory record Official record
Conditions
Covid19
Interventions
Niclosamide, Placebo
Drug
Lead sponsor
Entero Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
166 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
13
States / cities
Birmingham, Alabama • DeLand, Florida • Hialeah, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2024 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Incidence of COVID-19 Test Conversion in Post-surgical Patients

NCT04392323
View directory record Official record
Conditions
Sars-CoV2
Interventions
COVID-19 PCR and Serology
Diagnostic Test
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
111 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
2
States / cities
Manhasset, New York • New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Nov 8, 2021 · Synced Oct 21, 2026, 11:27 AM EDT
Terminated Phase 2 Interventional

IRAK4 Inhibition in Treatment of COVID-19 With ARDS (I-RAMIC)

NCT04575610
View directory record Official record
Conditions
COVID-19
Interventions
PF-06650833, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 75 Years
Enrollment
7 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 Oct 26, 2021 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Efficacy of N-Acetylcysteine (NAC) in Preventing COVID-19 From Progressing to Severe Disease

NCT04419025
View directory record Official record
Conditions
COVID, Sars-CoV2, SARS-Associated Coronavirus as Cause of Disease Classified Elsewhere, Oxidative Stress
Interventions
N-acetylcysteine
Drug
Lead sponsor
Cambridge Health Alliance
Other
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
4
States / cities
Cambridge, Massachusetts • Everett, Massachusetts • Somerville, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 28, 2021 · Synced Oct 21, 2026, 11:27 AM EDT
Completed No phase listed Observational

Investigating Immune Escape by SARS-CoV-2 Variants

NCT05171803
View directory record Official record
Conditions
COVID-19; Immunity
Interventions
No intervention
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 100 Years
Enrollment
38 participants
Timeline
2021 – 2023
U.S. locations
1
States / cities
San Dimas, California
Source: ClinicalTrials.gov public record
Updated Nov 8, 2023 · Synced Oct 21, 2026, 11:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Protecting Our Community: COVID-19 Testing

NCT04866303
View directory record Official record
Conditions
SARS-CoV-2, Covid19
Interventions
Home-based SARS-CoV-2 test kit
Diagnostic Test
Lead sponsor
Montana State University
Other
Eligibility
18 Years and older
Enrollment
273 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Pablo, Montana • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 7, 2023 · Synced Oct 21, 2026, 11:27 AM EDT