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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
Completed Not applicable Interventional

COVID-19 SAFE Enrollment

NCT04506268
View directory record Official record
Conditions
Covid19
Interventions
Opt-out Recruitment Email, Opt-in Recruitment Email
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
412 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 10, 2021 · Synced Sep 19, 2026, 7:19 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Dose Exploration Intramuscular/Intravenous Prophylaxis Pharmacokinetic Exposure Response Study

NCT05872958
View directory record Official record
Conditions
COVID-19
Interventions
AZD3152, Placebo
Drug · Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
4
States / cities
Anniston, Alabama • Cullman, Alabama • Scottsdale, Arizona + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Sep 19, 2026, 7:19 AM 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 19, 2025 · Synced Sep 19, 2026, 7:19 AM EDT
Active, not recruiting No phase listed Observational

Well-being in Cancer Patients With Neuropathy During COVID-19 Who Participated in Prior Clinical Trials

NCT04650178
View directory record Official record
Conditions
COVID-19 Infection, Hematopoietic and Lymphoid Cell Neoplasm, Malignant Solid Neoplasm, Neuropathy
Interventions
Quality-of-Life Assessment, Questionnaire Administration
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
274 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Sep 19, 2026, 7:19 AM EDT
Completed No phase listed Observational

Asymptomatic SARS-CoV-2 Detection in Children

NCT04853316
View directory record Official record
Conditions
Covid19, SARS-CoV-2
Interventions
Not listed
Lead sponsor
University of Calgary
Other
Eligibility
Up to 18 Years
Enrollment
372 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
4
States / cities
Birmingham, Alabama • San Diego, California • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2022 · Synced Sep 19, 2026, 7:19 AM EDT
Withdrawn Not applicable Interventional

CAPTION AI to Minimize Risk of COVID Exposure

NCT04336774
View directory record Official record
Conditions
COVID-19
Interventions
Caption AI
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 9, 2020 · Synced Sep 19, 2026, 7:19 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study of Hydroxychloroquine, Vitamin C, Vitamin D, and Zinc for the Prevention of COVID-19 Infection

NCT04335084
View directory record Official record
Conditions
COVID-19, Coronavirus Infection, Sars-CoV2, Corona Virus Infection, COVID, Coronavirus, Coronavirus-19, Coronavirus 19
Interventions
Hydroxychloroquine, Vitamin C, Vitamin D, Zinc
Drug · Dietary Supplement
Lead sponsor
ProgenaBiome
Other
Eligibility
18 Years and older
Enrollment
254 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced Sep 19, 2026, 7:19 AM EDT
Completed Not applicable Interventional

Identification of a Responsive Subpopulation to Hydroxychloroquine in COVID-19 Patients Using Machine Learning

NCT04423991
View directory record Official record
Conditions
COVID-19, Coronavirus, Mortality
Interventions
COViage
Device
Lead sponsor
Dascena
Industry
Eligibility
Not listed
Enrollment
290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Jun 8, 2020 · Synced Sep 19, 2026, 7:19 AM EDT
Completed No phase listed Observational

A Clinical Evaluation of Proof Diagnostics Test System Including the Proof Diagnostics Reader and COVID-19 Test

NCT05331976
View directory record Official record
Conditions
COVID-19, Asymptomatic COVID-19
Interventions
Proof Lab Test System
Diagnostic Test
Lead sponsor
Proof Diagnostics
Industry
Eligibility
2 Years and older
Enrollment
276 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
3
States / cities
Spring Hill, Florida • Statesville, North Carolina • Redmond, Washington
Source: ClinicalTrials.gov public record
Updated Apr 24, 2022 · Synced Sep 19, 2026, 7:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

COVID-19 Serologic Strategies for Skilled Nursing Facilities

NCT05270980
View directory record Official record
Conditions
COVID-19
Interventions
Cohorting
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2023 · Synced Sep 19, 2026, 7:19 AM 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 7, 2020 · Synced Sep 19, 2026, 7:19 AM EDT
Terminated 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 Sep 14, 2026 · Synced Sep 19, 2026, 7:19 AM 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 19, 2026, 7:19 AM 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 19, 2026, 7:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Koa Family Study--A Community-Based Intervention to Improve Health and Well-Being

NCT04662593
View directory record Official record
Conditions
Obesity, Overweight, Diet, Healthy, Social Interaction, Weight Loss
Interventions
Whole Health Program
Behavioral
Lead sponsor
University of California, Davis
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Oct 10, 2021 · Synced Sep 19, 2026, 7:19 AM 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 19, 2026, 7:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Randomized Controlled Trial of Imago Relationship Therapy

NCT04302844
View directory record Official record
Conditions
Relationship Disorder
Interventions
Imago Relationship Therapy, Waitlist with Bibliotherapy followed by Workshop
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 18, 2023 · Synced Sep 19, 2026, 7:19 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Viral Infections in Healthy and Immunocompromised Hosts

NCT01306084
View directory record Official record
Conditions
Anogenital Herpes, COVID-19, Herpes Labialis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 120 Years
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 13, 2026 · Synced Sep 19, 2026, 7:19 AM 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 19, 2026, 7:19 AM EDT
Recruiting Early Phase 1 Interventional

Piloting Virtual Reality Environments to Treat PTSD in Healthcare Workers

NCT04887116
View directory record Official record
Conditions
Posttraumatic Stress Disorder
Interventions
Virtual Reality Exposure Therapy
Behavioral
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Sep 19, 2026, 7:19 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Prospective Virtual Study to Evaluate the Longevity of IgG Antibodies in Individuals Exposed to COVID-19

NCT05042193
View directory record Official record
Conditions
SARS-CoV-2 Acute Respiratory Disease
Interventions
SARS-CoV-2
Other
Lead sponsor
Everly Health
Industry
Eligibility
18 Years and older
Enrollment
1,883 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 14, 2022 · Synced Sep 19, 2026, 7:19 AM EDT
Terminated Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Safety, Immunogenicity, and Efficacy of INO-4800 for COVID-19 in Adults at High Risk of SARS-CoV-2 Exposure

NCT04642638
View directory record Official record
Conditions
Coronavirus Infection, Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), COVID-19 Disease
Interventions
INO-4800, CELLECTRA® 2000, Placebo
Drug · Device
Lead sponsor
Inovio Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
1,307 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
16
States / cities
Chandler, Arizona • Phoenix, Arizona • Tempe, Arizona + 12 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2023 · Synced Sep 19, 2026, 7:19 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Wearable Diagnostic for Detection of COVID-19 Infection

NCT04742569
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
ClinOne, Inc.
Industry
Eligibility
18 Years and older
Enrollment
790 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Greenwood Village, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 19, 2022 · Synced Sep 19, 2026, 7:19 AM EDT
Completed Phase 3 Interventional Results available

Post-exposure Prophylaxis / Preemptive Therapy for SARS-Coronavirus-2

NCT04308668
View directory record Official record
Conditions
Corona Virus Infection, Acute Respiratory Distress Syndrome, SARS-CoV Infection, Coronavirus, Coronavirus Infections
Interventions
Hydroxychloroquine, Placebo
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
1,312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 12, 2021 · Synced Sep 19, 2026, 7:19 AM EDT