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ClinicalTrials.gov public records Last synced Oct 4, 2026, 9:26 PM EDT

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Showing 73–96 of 130 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Covid-19 Prevention Clear all
Terminated Phase 2Phase 3 Interventional Results available

Evaluation of ADG20 for the Prevention of COVID-19

NCT04859517
View directory record Official record
Conditions
COVID-19
Interventions
ADG20, Placebo
Drug
Lead sponsor
Invivyd, Inc.
Industry
Eligibility
12 Years and older
Enrollment
2,582 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
66
States / cities
Birmingham, Alabama • Tucson, Arizona • Fayetteville, Arkansas + 60 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2024 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Phase III Double-blind, Placebo-controlled Study of AZD1222 for the Prevention of COVID-19 in Adults

NCT04516746
View directory record Official record
Conditions
COVID-19, SARS-CoV-2
Interventions
AZD1222, Placebo
Biological
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
32,450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
78
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Little Rock, Arkansas + 66 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2024 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 1 Interventional

Cyclosporine in Patients With Moderate COVID-19

NCT04412785
View directory record Official record
Conditions
COVID-19
Interventions
Cyclosporine
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 11, 2022 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Healthcare Worker Exposure Response and Outcomes of Hydroxychloroquine

NCT04334148
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine, Placebo oral tablet
Drug
Lead sponsor
Adrian Hernandez
Other
Eligibility
18 Years and older
Enrollment
1,360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
34
States / cities
Aurora, Colorado • Gainesville, Florida • Jacksonville, Florida + 27 more
Source: ClinicalTrials.gov public record
Updated Oct 12, 2021 · Synced Oct 4, 2026, 9:26 PM 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 10, 2020 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of MK-4482 for Prevention of Coronavirus Disease 2019 (COVID-19) in Adults (MK-4482-013)

NCT04939428
View directory record Official record
Conditions
Coronavirus Disease (COVID-19)
Interventions
Molnupiravir, Placebo
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
2,441 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
59
States / cities
Birmingham, Alabama • Mesa, Arizona • Tucson, Arizona + 53 more
Source: ClinicalTrials.gov public record
Updated Sep 26, 2024 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 2 Interventional Results available

LSALT Peptide vs. Placebo to Prevent ARDS and Acute Kidney Injury in Patients Infected With SARS-CoV-2 (COVID-19)

NCT04402957
View directory record Official record
Conditions
COVID, Severe Acute Respiratory Syndrome, Sars-CoV2, Acute Kidney Injury, Acute Respiratory Distress Syndrome
Interventions
LSALT peptide, Placebo
Drug
Lead sponsor
Arch Biopartners Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
3
States / cities
San Diego, California • Fort Lauderdale, Florida • Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Jul 9, 2025 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 2 Interventional Results available

A Safety and Tolerability Study of Sotrovimab (VIR-7831) Prophylaxis Against COVID-19 in Immunocompromised Individuals

NCT05210101
View directory record Official record
Conditions
SARS CoV 2 Infection
Interventions
Sotrovimab
Drug
Lead sponsor
Sophia Koo, M.D.
Other
Eligibility
18 Years and older
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
3
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 15, 2024 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Vitamin D for COVID-19 Trial

NCT04536298
View directory record Official record
Conditions
COVID-19
Interventions
vitamin D, Placebo
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
2,024 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 24, 2025 · Synced Oct 4, 2026, 9:26 PM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

A Phase 1/2A, Randomized Study of a T Follicular Helper (TFH)-Targeting Genetic Vaccine Strategy Designed to Induce Broad, Durable Immune Responses

NCT06810934
View directory record Official record
Conditions
COVID-19, SARS-CoV-2 Infection
Interventions
CoTend-BXBB (SARS2-30404), CoTend-s3BXBB (SARS2-17032), Placebo
Biological
Lead sponsor
Kara Chew
Other
Eligibility
40 Years to 64 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
2
States / cities
Los Angeles, California • San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 3 Interventional Results available

Colchicine/Statins for the Prevention of COVID-19 Complications (COLSTAT) Trial

NCT04472611
View directory record Official record
Conditions
SARS-CoV-2
Interventions
Standard of Care (SOC) and Colchicine+Rosuvastatin
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
4
States / cities
Bridgeport, Connecticut • Greenwich, Connecticut • New Haven, Connecticut + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2023 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Mesenchymal Stem Cells for the Treatment of COVID-19

NCT04573270
View directory record Official record
Conditions
Covid19, Prophylaxis
Interventions
PrimePro, Placebo
Biological · Other
Lead sponsor
Thomas Advanced Medical LLC
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Culver City, California
Source: ClinicalTrials.gov public record
Updated Oct 5, 2020 · Synced Oct 4, 2026, 9:26 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Hydroxychloroquine as Prophylaxis for COVID-19 in Healthcare Workers (HCQPreP)

NCT04363450
View directory record Official record
Conditions
COVID-19, Corona Virus Infection, Wuhan Coronavirus, Prophylaxis, Healthcare Worker, Sars-CoV2, Hydroxychloroquine
Interventions
Hydroxychloroquine, Placebo
Drug
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
18 Years and older
Enrollment
1,700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
2
States / cities
Lafayette, Louisiana
Source: ClinicalTrials.gov public record
Updated Sep 2, 2020 · Synced Oct 4, 2026, 9:26 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 4, 2026, 9:26 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

(CBDRA60) to Prevent or Reduce Symptoms of COVID-19 and Prevention of Post-Acute Sequelae of SARS-CoV-2 Infection PASC

NCT04777981
View directory record Official record
Conditions
COVID-19, SAR
Interventions
CBDRA60 supplement, Placebo
Dietary Supplement
Lead sponsor
Anewsha Therapeutics Inc.
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Hanover, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 22, 2022 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

An Open Label Study in Adults to Test the Efficacy of Mitoquinone/Mitoquinol Mesylate to Prevent Severe Viral Illness

NCT05381454
View directory record Official record
Conditions
Respiratory Viral Infection, Antiviral Treatment, COVID-19
Interventions
Mitoquinone/mitoquinol mesylate
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Prevention and Treatment of Patient Before, During, and After Covid-19 Infection

NCT05043324
View directory record Official record
Conditions
Covid19
Interventions
AntiCov-220, AntiCov-220 (placebo)
Drug
Lead sponsor
Nguyen Thi Trieu, MD
Individual
Eligibility
16 Years to 82 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Healthcare Provider Human Papillomavirus Education and Professional Skills Intervention

NCT05120869
View directory record Official record
Conditions
Health Personnel Attitude, Health Knowledge, Attitudes, Practice
Interventions
Tailored HPV Education and Professional Skills Intervention Group, General HPV Education and Communication Skills Control Group
Behavioral
Lead sponsor
University of Texas, El Paso
Other
Eligibility
18 Years to 65 Years
Enrollment
161 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
2
States / cities
Las Cruces, New Mexico • El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Oct 4, 2026, 9:26 PM EDT
Terminated Phase 2 Interventional Results available

Leidos-Enabled Adaptive Protocol (LEAP-CT) for Evaluation of Post-exposure Prophylaxis for Newly-infected COVID-19 Patients

NCT05077969
View directory record Official record
Conditions
2019 Novel Coronavirus Disease, 2019 Novel Coronavirus Infection, 2019-nCoV Disease, 2019-nCoV Infection, COVID-19, COVID-19 Pandemic, COVID-19 Virus Disease, COVID-19 Virus Infection, Covid19, Coronavirus Disease 2019, SARS-CoV2 Infection, SARS-CoV-2 Acute Respiratory Disease
Interventions
Famotidine, Celecoxib, Placebo
Drug
Lead sponsor
Leidos Life Sciences
Industry
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
15
States / cities
Newport Beach, California • Miami, Florida • Atlanta, Georgia + 12 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2024 · Synced Oct 4, 2026, 9:26 PM EDT
Not listed Phase 1 Interventional

Covid-19 Convalescent Plasma as Prevention and Treatment for Children With Underlying Medical Conditions

NCT04462848
View directory record Official record
Conditions
Corona Virus Infection
Interventions
anti-SARS-CoV-2 human convalescent plasma
Biological
Lead sponsor
University of California, Los Angeles
Other
Eligibility
1 Month to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 8, 2020 · Synced Oct 4, 2026, 9:26 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

NO Prevention of COVID-19 for Healthcare Providers

NCT04312243
View directory record Official record
Conditions
Coronavirus Infections, Healthcare Associated Infection
Interventions
Inhaled nitric oxide gas
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 99 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 20, 2026 · Synced Oct 4, 2026, 9:26 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Phase 3 Study of S-217622 in Prevention of Symptomatic SARS-CoV-2 Infection

NCT05897541
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
S-217622, Placebo
Drug
Lead sponsor
Shionogi
Industry
Eligibility
Not listed
Enrollment
3,701 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
95
States / cities
Birmingham, Alabama • Cullman, Alabama • Phoenix, Arizona + 60 more
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 4, 2026, 9:26 PM EDT
Terminated Phase 3 Interventional Results available

A Study to Evaluate Efficacy and Safety of Casirivimab+Imdevimab (Monoclonal Antibodies) for Prevention of COVID-19 in Immunocompromised Adolescents and Adults

NCT05074433
View directory record Official record
Conditions
Immunocompromised
Interventions
casirivimab+imdevimab, Placebo
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
12 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
66
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Long Beach, California + 48 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Oct 4, 2026, 9:26 PM EDT
Terminated Phase 2 Interventional Results available

NasoVAX in Patients With Early Coronavirus Infectious Disease 2019 (COVID-19)

NCT04442230
View directory record Official record
Conditions
Coronavirus Infection
Interventions
NasoVAX, Placebo
Biological · Other
Lead sponsor
Altimmune, Inc.
Industry
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
7
States / cities
Miami, Florida • Morrow, Georgia • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 4, 2022 · Synced Oct 4, 2026, 9:26 PM EDT