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ClinicalTrials.gov public records Last synced Sep 8, 2026, 1:25 PM EDT

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Showing 1–24 of 134 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: COVID-19 Exposure Clear all
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 8, 2026, 1:25 PM EDT
Terminated Phase 1 Interventional Results available

Pharmacokinetics of Sotrovimab as Pre-exposure Prophylaxis for COVID-19 in Hematopoietic Stem Cell Transplant Recipients, COVIDMAB Study

NCT05135650
View directory record Official record
Conditions
COVID-19 Infection, Hematopoietic and Lymphoid Cell Neoplasm, Malignant Solid Neoplasm
Interventions
Questionnaire Administration, Sotrovimab, Biospecimen Collection
Other · Biological · Procedure
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 12, 2025 · Synced Sep 8, 2026, 1:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study to Assess Maternal and Infant Outcomes Following Exposure to SPIKEVAX During Pregnancy

NCT06369272
View directory record Official record
Conditions
Maternal Outcomes, Infant Outcomes, Pregnancy
Interventions
Not listed
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
13 Years to 49 Years · Female only
Enrollment
1,192 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Newton, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Sep 8, 2026, 1:25 PM EDT
Completed No phase listed Observational

Use and Effectiveness of COVID-19 Vaccines Using State Vaccine Registries and Insurance Claims Data

NCT05876377
View directory record Official record
Conditions
SARS-CoV-2, COVID-19, Post-Acute COVID-19 Syndrome
Interventions
Pfizer-BioNTech COVID-19 mRNA vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
6 Months and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Sep 8, 2026, 1:25 PM EDT
Completed Phase 2 Interventional Results available

COVID-19 PrEP HCW HCQ Study

NCT04354870
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine (HCQ)
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 13, 2022 · Synced Sep 8, 2026, 1:25 PM EDT
Completed Phase 2Phase 3 Interventional Results available

A Study of a Potential Oral Treatment to Prevent COVID-19 in Adults Who Are Exposed to Household Member(s) With a Confirmed Symptomatic COVID-19 Infection

NCT05047601
View directory record Official record
Conditions
COVID-19
Interventions
PF-07321332, Placebo for PF-07321332, Placebo for Ritonavir, Ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
2,954 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
64
States / cities
Pelham, Alabama • Tucson, Arizona • Fullerton, California + 36 more
Source: ClinicalTrials.gov public record
Updated May 5, 2023 · Synced Sep 8, 2026, 1:25 PM EDT
Completed No phase listed Observational

A Study to Assess Infection Rate of Severe Acute Respiratory Syndrome - CoronaVirus 2 (SARS-CoV-2) and It's Affect on Quality of Life in Adult Volunteers in Lake County, Illinois

NCT04611230
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome - CoronaVirus 2 (SARS-CoV-2)
Interventions
Not listed
Lead sponsor
AbbVie
Industry
Eligibility
18 Years and older
Enrollment
1,007 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 9, 2022 · Synced Sep 8, 2026, 1:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Dyadic Telehealth Program for Alzheimer's Patients/Caregivers

NCT05102565
View directory record Official record
Conditions
Sleep
Interventions
sleep education program
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 2, 2024 · Synced Sep 8, 2026, 1:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

In Utero Exposure to SARS-CoV-2 (COVID-19) and Cardiovascular and Metabolic Endpoints in Early Life

NCT04921241
View directory record Official record
Conditions
In Utero SARS-CoV-2 Exposure
Interventions
In Utero Exposure to SARS-CoV-2
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
9 Months and older
Enrollment
86 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 8, 2026, 1:25 PM EDT
Completed Phase 3 Interventional Results available

Phase III Double-blind, Placebo-controlled Study of AZD7442 for Post- Exposure Prophylaxis of COVID-19 in Adults

NCT04625972
View directory record Official record
Conditions
COVID-19
Interventions
AZD7442, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 120 Years
Enrollment
1,131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
50
States / cities
Guntersville, Alabama • Tempe, Arizona • Little Rock, Arkansas + 42 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2023 · Synced Sep 8, 2026, 1:25 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

ARMOR-Household: Characterizing Transmission of COVID-19 in Households of SARS-CoV-2 Index Cases

NCT05467917
View directory record Official record
Conditions
COVID-19, Households, SARS CoV 2 Infection
Interventions
Not listed
Lead sponsor
Columbia University
Other
Eligibility
Not listed
Enrollment
374 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2025 · Synced Sep 8, 2026, 1:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Doctors for Coronavirus Prevention Project Thanksgiving / Christmas Messaging Campaign

NCT04644328
View directory record Official record
Conditions
Covid19
Interventions
Facebook Ads on the importance of staying safe during the Thanksgiving / Christmas holiday
Behavioral
Lead sponsor
National Bureau of Economic Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
820 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 20, 2021 · Synced Sep 8, 2026, 1:25 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 4, 2020 · Synced Sep 8, 2026, 1:25 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Mitoquinone/Mitoquinol Mesylate as Oral and Safe Postexposure Prophylaxis for Covid-19

NCT05886816
View directory record Official record
Conditions
SARS-CoV Infection, COVID-19
Interventions
Mitoquinone/mitoquinol mesylate, Placebo
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Sep 8, 2026, 1:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Lactobacillus on the Microbiome of Household Contacts Exposed to COVID-19

NCT04399252
View directory record Official record
Conditions
Microbiome
Interventions
Lactobacillus rhamnosus GG, Lactobacillus rhamnosus GG Placebo
Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
1 Year and older
Enrollment
182 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 16, 2024 · Synced Sep 8, 2026, 1:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

COVID-19 Pandemic Response Network

NCT04320862
View directory record Official record
Conditions
COVID-19, SARS-CoV-2, Coronavirus, Influenza -Like Illness, Lower Resp Tract Infection, Upper Resp Tract Infection
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
Not listed
Enrollment
9,207 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 16, 2021 · Synced Sep 8, 2026, 1:25 PM EDT
Completed No phase listed Observational

COVID-19 Pregnancy Related Immunological, Clinical and Epidemiological Factors and Perinatal Outcomes

NCT04659759
View directory record Official record
Conditions
Covid19
Interventions
COVID-19 exposure, COVID-19 vaccine
Other · Biological
Lead sponsor
Thomas Jefferson University
Other
Eligibility
Female only
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Sep 8, 2026, 1:25 PM EDT
Active, not recruiting Not applicable Interventional

Daily Light and Sound Stimulation to Improve Brain Functions in Alzheimer's Disease

NCT04055376
View directory record Official record
Conditions
Alzheimer Disease, Alzheimer Dementia
Interventions
GENUS device (Active Settings), GENUS device (Sham Settings)
Device
Lead sponsor
Massachusetts Institute of Technology
Other
Eligibility
50 Years to 100 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 25, 2026 · Synced Sep 8, 2026, 1:25 PM EDT
Terminated No phase listed Observational

Estimated Vaccine Effectiveness and Durability of Pfizer/BioNTech 2024-2025 COVID-19 Vaccine

NCT06703190
View directory record Official record
Conditions
COVID-19
Interventions
Pfizer-BioNTech BNT162b2 COVID-19 Vaccinated, Not vaccinated with 2024-2025 formulated COVID-19 vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
5 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Sep 8, 2026, 1:25 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Collection of SARS CoV-2 (COVID-19) Virus Secretions and Serum for Countermeasure Development

NCT04956445
View directory record Official record
Conditions
Covid19
Interventions
Not listed
Lead sponsor
Tulane University
Other
Eligibility
6 Months to 120 Years
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
2
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Sep 8, 2026, 1:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

COVID-19 and Mental Health

NCT04407195
View directory record Official record
Conditions
COVID-19, Mental Health Disorder
Interventions
Exposure to the SARS-CoV-2
Other
Lead sponsor
Northeastern University
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 4, 2021 · Synced Sep 8, 2026, 1:25 PM EDT
Completed No phase listed Observational

Healthcare Worker Exposure Response and Outcomes (HERO) Registry Study, COVID-19

NCT04342806
View directory record Official record
Conditions
Health Care Worker (HCW), COVID-19
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years to 110 Years
Enrollment
51,466 participants
Timeline
2020 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 4, 2023 · Synced Sep 8, 2026, 1:25 PM EDT
Completed No phase listed Observational

Risks of Bacterial and Fungal Superinfection in Patients With COVID-19

NCT05256316
View directory record Official record
Conditions
COVID-19
Interventions
Previously admitted COVID-19 patients in intensive care units
Other
Lead sponsor
The University of Queensland
Other
Eligibility
18 Years and older
Enrollment
790 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 21, 2023 · Synced Sep 8, 2026, 1:25 PM EDT
Recruiting Not applicable Interventional

Non-invasive Treatment for Long COVID (Post COVID-19 Condition) Brain Fog

NCT06614309
View directory record Official record
Conditions
Long COVID
Interventions
Acute Placebo Visit, Acute Progressive Carbon Dioxide, Acute Intermittent Hypoxia, Training: Progressive Carbon Dioxide Ramping, Training: Intermittent Hypoxic Exposure, Training: Placebo Control
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Sep 8, 2026, 1:25 PM EDT