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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: COVID-19 SARS-CoV-2 Infection Clear all
Completed No phase listed Observational

Detecting SARS-CoV-2 in Tears

NCT04526769
View directory record Official record
Conditions
COVID, COVID-19, Corona Virus Infection, SARS-CoV-2
Interventions
Tear Collection
Diagnostic Test
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 30, 2022 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Low vs. Moderate to High Dose Vitamin D for Prevention of COVID-19

NCT04868903
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
1,475 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Jul 23, 2026, 10:05 AM EDT
Terminated Not applicable Interventional

Incline Positioning in COVID-19 Patients for Improvement in Oxygen Saturation

NCT04344561
View directory record Official record
Conditions
COVID, Hypoxic Respiratory Failure
Interventions
Postural Positioning
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 5, 2022 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety, Reactogenicity, and Effectiveness of mRNA-1273 Vaccine in Adolescents 12 to <18 Years Old to Prevent COVID-19

NCT04649151
View directory record Official record
Conditions
SARS-CoV-2
Interventions
mRNA-1273, Placebo, mRNA-1273.222
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
12 Years to 18 Years
Enrollment
4,328 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
48
States / cities
Banning, California • La Mesa, California • Lake Worth, Florida + 41 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2025 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Not applicable Interventional

Trauma and Trauma-Focused Therapy in the University of Kentucky SMART Clinic

NCT04760418
View directory record Official record
Conditions
PTSD, Opioid-use Disorder, Substance Use Disorders
Interventions
Concurrent Treatment of PTSD and Substance Use Disorders Using Prolonged Exposure (COPE)
Behavioral
Lead sponsor
Christal L Badour
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 18, 2022 · Synced Jul 23, 2026, 10:05 AM EDT
Completed No phase listed Observational

Myeloproliferative Neoplasms (MPN) and COVID-19

NCT04385160
View directory record Official record
Conditions
Myeloproliferative Neoplasm, COVID
Interventions
Not listed
Lead sponsor
FROM- Fondazione per la Ricerca Ospedale di Bergamo- ETS
Other
Eligibility
18 Years and older
Enrollment
552 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 14, 2025 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Phase 1 Interventional

Progesterone for the Treatment of COVID-19 in Hospitalized Men

NCT04365127
View directory record Official record
Conditions
COVID-19, Sars-CoV2
Interventions
Progesterone 100 MG
Drug
Lead sponsor
Sara Ghandehari
Other
Eligibility
18 Years and older · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Jul 23, 2026, 10:05 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

The PATCH Trial (Prevention And Treatment of COVID-19 With Hydroxychloroquine)

NCT04329923
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine Sulfate 400 mg twice a day, Hydroxychloroquine Sulfate 600 mg twice a day, Hydroxychloroquine Sulfate 600 mg once a day, Placebo oral tablet
Drug
Lead sponsor
Ravi Amaravadi, MD
Other
Eligibility
18 Years and older
Enrollment
173 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 9, 2020 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Phase 1 Interventional Results available

A Study to Evaluate Ampion in Patients With Prolonged Respiratory Symptoms Due to COVID-19 (Long COVID)

NCT04880161
View directory record Official record
Conditions
Covid19
Interventions
Ampion, Placebo
Biological · Other
Lead sponsor
Ampio Pharmaceuticals. Inc.
Industry
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Englewood, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Not applicable Interventional

Merging Yoga and Self-Management Skills for Symptoms of Long COVID

NCT05697042
View directory record Official record
Conditions
Long COVID
Interventions
MY-Skills for Long COVID
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 12, 2024 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Early Phase 1 Interventional

Immune Response to the COVID-19 Vaccine

NCT04936997
View directory record Official record
Conditions
Covid19, Cancer, Malignancy, Vaccine Response Impaired
Interventions
SARS-COV2 Pfizer Vaccine
Biological
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated May 19, 2022 · Synced Jul 23, 2026, 10:05 AM EDT
Withdrawn Phase 1 Interventional

Transplantation of Deceased Donors With COVID-19 Into COVID-19 Negative Recipients Utilizing Casirivimab and Imdevimab Antibody Cocktail

NCT05157997
View directory record Official record
Conditions
COVID-19, Organ Transplant
Interventions
Casirivimab and Imdevimab Antibody Cocktail
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Manhasset, New York
Source: ClinicalTrials.gov public record
Updated Apr 21, 2022 · Synced Jul 23, 2026, 10:05 AM EDT
Active, not recruiting Not applicable Interventional

A Study of Healthy Microbiome, Healthy Mind

NCT06020703
View directory record Official record
Conditions
Critical Illness, COVID-19, PICS, Cognitive Impairment, Mental Health Impairment, Weakness, Muscle, Dysbiosis
Interventions
Fermented Food Diet
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Phase 3 Interventional Results available

BRII-196/BRII-198 for Inpatients With COVID-19 (An ACTIV-3/TICO Treatment Trial)

NCT05780424
View directory record Official record
Conditions
COVID-19
Interventions
BRII-196, BRII-198, Placebo, Remdesivir
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
353 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
76
States / cities
Tucson, Arizona • Fresno, California • Loma Linda, California + 52 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2024 · Synced Jul 23, 2026, 10:05 AM EDT
Terminated Phase 4 Interventional Results available

Hyperbaric Oxygen Therapy in Non-ventilated COVID-19 Patients

NCT04409886
View directory record Official record
Conditions
COVID, Coronavirus
Interventions
Hyperbaric Oxygen Therapy
Biological
Lead sponsor
Maimonides Medical Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Jun 28, 2021 · Synced Jul 23, 2026, 10:05 AM EDT
Completed No phase listed Observational

Assessing Performance of the Testing Done Simple Covid 19 Antigen Test

NCT05610449
View directory record Official record
Conditions
COVID-19
Interventions
Testing Done Simple SARS CoV-2 Antigen Test
Diagnostic Test
Lead sponsor
Testing Done Simple
Industry
Eligibility
18 Years and older
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
Queens, New York
Source: ClinicalTrials.gov public record
Updated May 14, 2023 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study of Ad26.COV2.S in Adults (COVID-19)

NCT04436276
View directory record Official record
Conditions
Covid-19 Prevention
Interventions
Ad26.COV2.S, Placebo
Biological
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years and older
Enrollment
1,085 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
7
States / cities
San Diego, California • Melbourne, Florida • Peoria, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Jul 23, 2026, 10:05 AM EDT
Completed No phase listed Observational

Prognostication of Recovery in Early Disorders of Consciousness After COVID-19

NCT04476589
View directory record Official record
Conditions
Covid19, Coma, Consciousness Disorder
Interventions
Functional MRI
Diagnostic Test
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
12 participants
Timeline
2020 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 3, 2023 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Relative Bioavailability Study of Nirmatrelvir/Ritonavir 4 Different Fixed Dose Combination Tablets Relative to the Commercial Tablets in Healthy Participants

NCT05525910
View directory record Official record
Conditions
Biological Availability, Healthy Participants
Interventions
Nirmatrelvir/ ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Jul 23, 2026, 10:05 AM EDT
Not listed Phase 2 Interventional

Use of Monoclonal Antibodies for the Treatment of Mild to Moderate COVID-19 in Non-Hospitalized Setting

NCT04840459
View directory record Official record
Conditions
Covid19
Interventions
BAMLANIVIMAB, CASIRIVIMAB, IMDEVIMAB
Biological
Lead sponsor
Sohail Rao
Other
Eligibility
12 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
3
States / cities
Edinburg, Texas • Rio Grande City, Texas
Source: ClinicalTrials.gov public record
Updated Mar 28, 2022 · Synced Jul 23, 2026, 10:05 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Study of S-892216 Long-acting Injectable (LAI) in Healthy Adult Participants

NCT07093580
View directory record Official record
Conditions
Healthy Participants
Interventions
S-892216-LAI, Placebo
Drug
Lead sponsor
Shionogi
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
2
States / cities
Lenexa, Kansas • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Jul 23, 2026, 10:05 AM EDT
Active, not recruiting Phase 2 Interventional

A Phase 2 Study of RTB101 as COVID-19 Post-Exposure Prophylaxis in Older Adults

NCT04584710
View directory record Official record
Conditions
Covid19
Interventions
RTB101, Placebo
Drug
Lead sponsor
Restorbio Inc.
Industry
Eligibility
65 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Farmington, Connecticut • Roslindale, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 8, 2021 · Synced Jul 23, 2026, 10:05 AM EDT
Completed Phase 3 Interventional Results available

Immune Modulators for Treating COVID-19

NCT04593940
View directory record Official record
Conditions
Covid19
Interventions
Infliximab, Abatacept, Remdesivir, cenicriviroc (closed to enrollment as of 3-Sep-2021)
Drug
Lead sponsor
Daniel Benjamin
Other
Eligibility
18 Years and older
Enrollment
1,971 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
67
States / cities
Phoenix, Arizona • Little Rock, Arkansas • La Jolla, California + 54 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2023 · Synced Jul 23, 2026, 10:05 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Understanding Immunity to the Flu Vaccine in COVID-19 Patients

NCT04579588
View directory record Official record
Conditions
Corona Virus Infection, Flu Vaccine, Immunity
Interventions
Flu shot
Biological
Lead sponsor
Stanford University
Other
Eligibility
9 Years to 64 Years
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2028
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Jul 23, 2026, 10:05 AM EDT