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ClinicalTrials.gov public records Last synced Oct 3, 2026, 6:56 PM EDT

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Showing 49–72 of 130 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Covid-19 Prevention Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

COVID-19: Povidone-Iodine Intranasal Prophylaxis in Front-line Healthcare Personnel and Inpatients

NCT04364802
View directory record Official record
Conditions
COVID-19, SARS-CoV 2
Interventions
Povidone-Iodine Nasal Spray and Gargle
Drug
Lead sponsor
Nikita Gupta
Other
Eligibility
18 Years to 99 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Dec 2, 2022 · Synced Oct 3, 2026, 6:56 PM EDT
Completed No phase listed Observational

eVusheld Assessment reaL wORld Effectiveness in the VA Health System

NCT05663957
View directory record Official record
Conditions
SARS-CoV-2, COVID-19
Interventions
Evusheld
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
12 Years and older
Enrollment
5,814 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 3, 2024 · Synced Oct 3, 2026, 6:56 PM EDT
Completed Phase 2 Interventional Results available

GLS-1027 for the Prevention of Severe Pneumonitis Caused by SARS-CoV-2 Infection (COVID-19)

NCT04590547
View directory record Official record
Conditions
Pneumonitis, SARS-CoV Infection
Interventions
GLS-1027, Placebo
Drug
Lead sponsor
GeneOne Life Science, Inc.
Industry
Eligibility
18 Years and older
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 11, 2025 · Synced Oct 3, 2026, 6:56 PM EDT
Completed No phase listed Observational

eVusheld Assessment reaL wORld Effectiveness at UPMC

NCT05667116
View directory record Official record
Conditions
SARS-CoV-2, COVID-19
Interventions
EVUSHELD
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
12 Years and older
Enrollment
4,232 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 12, 2024 · Synced Oct 3, 2026, 6:56 PM EDT
Completed Phase 3 Interventional Results available

A Study of LY3819253 (LY-CoV555) and LY3832479 (LY-CoV016) in Preventing SARS-CoV-2 Infection and COVID-19 in Nursing Home Residents and Staff

NCT04497987
View directory record Official record
Conditions
COVID-19, SARS-CoV2
Interventions
Bamlanivimab, Placebo, Etesevimab
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
1,180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
27
States / cities
Birmingham, Alabama • Phoenix, Arizona • Bentonville, Arkansas + 23 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2022 · Synced Oct 3, 2026, 6:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Brief Informational Intervention for COVID-19 Misinformation Prophylaxis

NCT04557241
View directory record Official record
Conditions
COVID19 Behavioral Prophylaxis
Interventions
Brief informational infographic, Placebo control (non-behavioral infographic)
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
1,017 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 9, 2021 · Synced Oct 3, 2026, 6:56 PM 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 9, 2021 · Synced Oct 3, 2026, 6:56 PM 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 3, 2020 · Synced Oct 3, 2026, 6:56 PM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

Study of VYD2311 for the Prevention of COVID-19

NCT07298434
View directory record Official record
Conditions
COVID-19
Interventions
VYD2311-SD, VYD2311-MD, Placebo
Drug
Lead sponsor
Invivyd, Inc.
Industry
Eligibility
12 Years to 100 Years
Enrollment
1,770 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
20
States / cities
Long Beach, California • San Diego, California • Orlando, Florida + 17 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Oct 3, 2026, 6:56 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Clinical Trial to Determine the Safety and Efficacy of HB-adMSCs to Provide Protection Against COVID-19

NCT04349631
View directory record Official record
Conditions
COVID-19
Interventions
HB-adMSCs
Biological
Lead sponsor
Hope Biosciences Research Foundation
Industry
Eligibility
Not listed
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Sugar Land, Texas
Source: ClinicalTrials.gov public record
Updated Sep 26, 2025 · Synced Oct 3, 2026, 6:56 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Synthetic MVA-based SARS-CoV-2 Vaccine, GEO-CM04S1, for the Prevention of COVID-19 Infection

NCT04639466
View directory record Official record
Conditions
COVID-19 Infection
Interventions
Placebo Administration, Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1
Drug · Biological
Lead sponsor
GeoVax, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
119 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
3
States / cities
Claremont, California • Duarte, California • Thousand Oaks, California
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Oct 3, 2026, 6:56 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

HEalth Care Worker pROphylaxis Against COVID-19: The HERO Trial

NCT04352946
View directory record Official record
Conditions
Prophylaxis, COVID-19, Health Care Worker, Hydroxychloroquine
Interventions
Hydroxychloroquine Pre-Exposure Prophylaxis, Placebo oral tablet
Drug
Lead sponsor
GeoSentinel Foundation
Other
Eligibility
18 Years and older
Enrollment
374 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 22, 2020 · Synced Oct 3, 2026, 6:56 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of Ad26.COV2.S and Influenza Vaccines in Healthy Adults

NCT05091307
View directory record Official record
Conditions
COVID-19 Prevention
Interventions
Ad26.COV2.S, Placebo, Influenza Vaccine
Biological · Other
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years and older
Enrollment
861 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
17
States / cities
Tempe, Arizona • San Diego, California • Coral Gables, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated May 25, 2025 · Synced Oct 3, 2026, 6:56 PM 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 3, 2026, 6:56 PM 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 27, 2021 · Synced Oct 3, 2026, 6:56 PM EDT
Terminated Phase 2 Interventional Results available

Saved From COVID-19 - Chloroquine (CQ) Prophylaxis for Health Care Workers at Risk for COVID

NCT04349371
View directory record Official record
Conditions
COVID, Coronavirus Infection
Interventions
Chloroquine, Placebo oral tablet
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 27, 2025 · Synced Oct 3, 2026, 6:56 PM EDT
Terminated Phase 3 Interventional Results available

Trial to Evaluate the Efficacy and Safety of Nitazoxanide (NTZ) for Post-Exposure Prophylaxis of COVID-19 and Other Viral Respiratory Illnesses in Elderly Residents of Long-Term Care Facilities (LTCF)

NCT04343248
View directory record Official record
Conditions
COVID-19, Viral Respiratory Illnesses
Interventions
Nitazoxanide, Placebo, Vitamin Super B-Complex
Drug · Dietary Supplement
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
55 Years to 120 Years
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
4
States / cities
Kissimmee, Florida • Acworth, Georgia • Lake Charles, Louisiana + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 8, 2024 · Synced Oct 3, 2026, 6:56 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

COVID-19 Study Assessing the Efficacy and Safety of Anti-Spike SARS CoV-2 Monoclonal Antibodies for Prevention of SARS CoV-2 Infection Asymptomatic in Healthy Adults and Adolescents Who Are Household Contacts to an Individual With a Positive SARS-CoV-2 RT-PCR Assay

NCT04452318
View directory record Official record
Conditions
Healthy Participants
Interventions
REGN10933 + REGN10987, Placebo
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
1 Day and older
Enrollment
3,303 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
132
States / cities
Mesa, Arizona • Tucson, Arizona • La Mesa, California + 94 more
Source: ClinicalTrials.gov public record
Updated May 15, 2023 · Synced Oct 3, 2026, 6:56 PM 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 4, 2025 · Synced Oct 3, 2026, 6:56 PM 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 14, 2022 · Synced Oct 3, 2026, 6:56 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Vitamin D Supplementation in the Prevention and Mitigation of COVID-19 Infection

NCT04482673
View directory record Official record
Conditions
COVID-19, Vitamin D Deficiency, Respiratory Viral Infection
Interventions
Daily Vitamin D3, Daily placebo, Bolus vitamin D3, Bolus placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
50 Years and older
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 24, 2023 · Synced Oct 3, 2026, 6:56 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Non-invasive Biometric Monitoring in Nursing Homes to Fight COVID-19

NCT04548895
View directory record Official record
Conditions
Covid19, Community-Acquired Respiratory Tract Infection
Interventions
Observational measurement of biometric data. No change to health care provided.
Device
Lead sponsor
Health Stream Analytics, LLC
Industry
Eligibility
Not listed
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Pasco, Washington
Source: ClinicalTrials.gov public record
Updated Jun 11, 2021 · Synced Oct 3, 2026, 6:56 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of mRNA-1283 Injection Compared With mRNA-1273 Injection in Participants ≥12 Years of Age to Prevent COVID-19

NCT05815498
View directory record Official record
Conditions
COVID-19
Interventions
mRNA-1283.222, mRNA-1273.222, mRNA-1283.815, mRNA-1273.815
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
12 Years and older
Enrollment
13,553 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
161
States / cities
Huntsville, Alabama • Vestavia Hills, Alabama • Chandler, Arizona + 129 more
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 3, 2026, 6:56 PM EDT
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 17, 2026 · Synced Oct 3, 2026, 6:56 PM EDT