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ClinicalTrials.gov public records Last synced Sep 25, 2026, 5:04 AM EDT

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Showing 1–24 of 113 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Prevention of COVID-19 Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

PROTECT-APT 1: Early Treatment and Post-Exposure Prophylaxis of COVID-19

NCT05954286
View directory record Official record
Conditions
SARS-CoV-2
Interventions
Upamostat, Placebo (PO)
Drug
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
3
States / cities
Baltimore, Maryland • Cleveland, Ohio • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Sep 25, 2026, 5:04 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Polio Vaccine (IPV) for SARS-CoV-2 and Prevention of Coronavirus Disease (COVID-19)

NCT04639375
View directory record Official record
Conditions
SARS-CoV-2
Interventions
Vaccinated with polio vaccine (IPV)
Biological
Lead sponsor
E-MO Biology Inc
Industry
Eligibility
18 Years to 80 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
National City, California
Source: ClinicalTrials.gov public record
Updated Aug 26, 2021 · Synced Sep 25, 2026, 5:04 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Intervention to Prevent Household and Community Spread of COVID-19 Among Latinos

NCT05697068
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
COVID Prevention Program (CPP)
Behavioral
Lead sponsor
San Diego State University
Other
Eligibility
18 Years and older
Enrollment
256 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 27, 2025 · Synced Sep 25, 2026, 5:04 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Rapid Development and Implementation of a Remote ECG-monitored Prospective Randomized Clinical Trial During a Pandemic: Hydroxychloroquine Prophylaxis in COVID-19 Household Contacts

NCT04652648
View directory record Official record
Conditions
Covid19, Hydroxychloroquine, Coronavirus Infection, Transmission, Prophylaxis
Interventions
Hydroxychloroquine
Drug
Lead sponsor
Bryn Mawr Hospital
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
3
States / cities
Bryn Mawr, Pennsylvania • Paoli, Pennsylvania • Wynnewood, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 2, 2020 · Synced Sep 25, 2026, 5:04 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 Sep 25, 2026, 5:04 AM EDT
Terminated Phase 1 Interventional

Treatment and Prevention of Acute Lung Injury (ALI) in Patients With COVID-19 Infection

NCT04526912
View directory record Official record
Conditions
Acute Lung Injury
Interventions
VIB7734, Placebo
Drug
Lead sponsor
Viela Bio
Industry
Eligibility
18 Years to 80 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 16, 2021 · Synced Sep 25, 2026, 5:04 AM EDT
Not listed No phase listed Observational

Improving Cancer Screening and Prevention During the COVID-19 Pandemic in Underserved Populations of Rhode Island

NCT04587258
View directory record Official record
Conditions
Breast Cancer, Colorectal Cancer, Covid19
Interventions
Informational videos and social media campaigns encouraging cancer screening.
Behavioral
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years and older
Enrollment
100 participants
Timeline
2020 – 2022
U.S. locations
1
States / cities
Pawtucket, Rhode Island
Source: ClinicalTrials.gov public record
Updated Oct 13, 2020 · Synced Sep 25, 2026, 5:04 AM EDT
Completed No phase listed Observational

eVusheld Assessment reaL wORld Effectiveness in DoD Health System

NCT05569408
View directory record Official record
Conditions
COVID-19; SARS-CoV-2; 2019 Novel Coronavirus Disease
Interventions
EVUSHELD
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
12 Years and older
Enrollment
4,724 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 25, 2026, 5:04 AM EDT
Terminated Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy of Hydroxychloroquine Prophylaxis for Health Care Workers at High Risk for COVID-19

NCT04435808
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Feb 13, 2022 · Synced Sep 25, 2026, 5:04 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

StriveWeekly Online Mental Health Trial Post-pandemic

NCT04927845
View directory record Official record
Conditions
Anxiety, Depressive Symptoms, Stress, Emotional
Interventions
StriveWeekly
Behavioral
Lead sponsor
Harvard University
Other
Eligibility
16 Years and older
Enrollment
538 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 2, 2024 · Synced Sep 25, 2026, 5:04 AM EDT
Terminated Phase 2 Interventional Results available

Inhaled Nitric Oxide for Preventing Progression in COVID-19

NCT04388683
View directory record Official record
Conditions
COVID-19
Interventions
Nitric Oxide
Drug
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 18, 2022 · Synced Sep 25, 2026, 5:04 AM EDT
Completed Phase 3 Interventional Results available

Phase III Double-blind, Placebo-controlled Study of AZD7442 for Pre-exposure Prophylaxis of COVID-19 in Adult.

NCT04625725
View directory record Official record
Conditions
COVID-19
Interventions
AZD7442, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 120 Years
Enrollment
5,197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
60
States / cities
Birmingham, Alabama • Tempe, Arizona • Little Rock, Arkansas + 53 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2024 · Synced Sep 25, 2026, 5:04 AM 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 15, 2025 · Synced Sep 25, 2026, 5:04 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of Ad26.COV2.S for the Prevention of SARS-CoV-2-Mediated COVID-19 in Adult Participants

NCT04505722
View directory record Official record
Conditions
Participants With or Without Stable Co-morbidities Associated With Progression to Severe COVID-19 at Different Stages of the Protocol
Interventions
Ad26.COV2.S, Placebo
Biological · Other
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years and older
Enrollment
44,325 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
117
States / cities
Birmingham, Alabama • Huntsville, Alabama • Glendale, Arizona + 77 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Sep 25, 2026, 5:04 AM 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 15, 2026 · Synced Sep 25, 2026, 5:04 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Hydroxychloroquine for COVID-19 Post-exposure Prophylaxis (PEP)

NCT04328961
View directory record Official record
Conditions
COVID-19, Corona Virus Infection, SARS (Severe Acute Respiratory Syndrome), SARS-CoV-2
Interventions
Hydroxychloroquine Sulfate, Ascorbic Acid
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 80 Years
Enrollment
943 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
8
States / cities
Los Angeles, California • New Orleans, Louisiana • Baltimore, Maryland + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 15, 2021 · Synced Sep 25, 2026, 5:04 AM 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 17, 2026 · Synced Sep 25, 2026, 5:04 AM 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 3, 2022 · Synced Sep 25, 2026, 5:04 AM EDT
Completed Phase 4 Interventional Results available

Prevention of Arteriovenous Thrombotic Events in Critically-Ill COVID-19 Patients Trial

NCT04409834
View directory record Official record
Conditions
COVID-19, Venous Thromboembolism, Arterial Thrombosis
Interventions
Unfractionated Heparin IV, Enoxaparin 1 mg/kg, Clopidogrel, Unfractionated heparin SC, Enoxaparin 40 mg SC
Drug
Lead sponsor
The TIMI Study Group
Other
Eligibility
18 Years and older
Enrollment
390 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 18, 2024 · Synced Sep 25, 2026, 5:04 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Prophylaxis and Treatment of COVID-19

NCT04844541
View directory record Official record
Conditions
COVID-19, Acute Respiratory Infection
Interventions
Not listed
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years and older
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
2
States / cities
Baltimore, Maryland • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 23, 2025 · Synced Sep 25, 2026, 5:04 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study of Ad26.COV2.S in Healthy Pregnant Participants (COVID-19)

NCT04765384
View directory record Official record
Conditions
COVID-19 Prevention
Interventions
Ad26.COV2.S
Biological
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
4
States / cities
Gulfport, Mississippi • Norfolk, Nebraska • Albuquerque, New Mexico + 1 more
Source: ClinicalTrials.gov public record
Updated May 24, 2025 · Synced Sep 25, 2026, 5:04 AM 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 14, 2024 · Synced Sep 25, 2026, 5:04 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Hydroxychloroquine in the Prevention of COVID-19 Infection in Healthcare Workers

NCT04333225
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine
Drug
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years to 75 Years
Enrollment
221 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 19, 2021 · Synced Sep 25, 2026, 5:04 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 Sep 25, 2026, 5:04 AM EDT