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ClinicalTrials.gov public records Last synced Oct 8, 2026, 5:36 AM EDT

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Showing 73–96 of 1,075 matching trials from the live ClinicalTrials.gov search.
Filters: "post-COVID" Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Phase 3 Study to Evaluate the Safety, Tolerability, and Immunogenicity of Multiple Production Lots and Dose Levels of BNT162b2 RNA-Based COVID-19 Vaccines Against COVID-19 in Healthy Participants

NCT04713553
View directory record Official record
Conditions
SARS-CoV-2 Infection, COVID-19
Interventions
BNT162b2, BNT162b2.B.1.351
Biological
Lead sponsor
BioNTech SE
Industry
Eligibility
12 Years to 50 Years
Enrollment
1,574 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
17
States / cities
Oakland, California • Milford, Connecticut • Hialeah, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2022 · Synced Oct 8, 2026, 5:36 AM EDT
Withdrawn Phase 2 Interventional

Coronavirus Smell Therapy for Anosmia Recovery

NCT04422275
View directory record Official record
Conditions
Anosmia
Interventions
Budesonide, High-Concentration Essential Oil, Placebo, Low-Concentration Essential Oil
Drug · Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 2, 2021 · Synced Oct 8, 2026, 5:36 AM EDT
Active, not recruiting No phase listed Observational

Pre- vs Post-Pandemic Risk-adjusted Survival Rates in the US Hospitals

NCT06651645
View directory record Official record
Conditions
In-hospital Mortality, Non-COVID Deaths, Surge
Interventions
COVID-19 Surge
Other
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years and older
Enrollment
30,000,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 29, 2025 · Synced Oct 8, 2026, 5:36 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Leflunomide for the Treatment of Severe COVID-19 in Patients With a Concurrent Malignancy

NCT04532372
View directory record Official record
Conditions
Hematopoietic and Lymphoid Cell Neoplasm, Malignant Solid Neoplasm, Symptomatic COVID-19 Infection Laboratory-Confirmed
Interventions
Best Practice, Leflunomide, Placebo Administration
Other · Drug
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Jul 3, 2024 · Synced Oct 8, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of RNA-based Vaccines Against SARS-CoV-2 Variants in Healthy Participants

NCT05004181
View directory record Official record
Conditions
SARS-CoV-2 Infection, COVID-19, SARS-CoV-2 Acute Respiratory Disease, SARS (Disease)
Interventions
BNT162b2, Multivalent BNT162b2 (B.1.1.7 + B.1.617.2), Monovalent BNT162b2 (B.1.1.7), Monovalent BNT162b2 (B.1.617.2), Monovalent BNT162b2 (B.1.1.529.1), Observational
Biological · Other
Lead sponsor
BioNTech SE
Industry
Eligibility
18 Years to 85 Years
Enrollment
1,380 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
14
States / cities
Long Beach, California • San Diego, California • Milford, Connecticut + 10 more
Source: ClinicalTrials.gov public record
Updated Nov 22, 2024 · Synced Oct 8, 2026, 5:36 AM EDT
Completed No phase listed Observational

Monitoring Serologic Response to Severe Acute Respiratory Syndrome-2 (SARS-COV-2)/COVID-19 in Children

NCT04838834
View directory record Official record
Conditions
COVID-19, SARS-CoV-2, Inflammatory Bowel Diseases
Interventions
Not listed
Lead sponsor
Connecticut Children's Medical Center
Other
Eligibility
2 Years to 27 Years
Enrollment
472 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 1, 2025 · Synced Oct 8, 2026, 5:36 AM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

The Precision Mito- Mito Map COMPASS Study

NCT07856121
View directory record Official record
Conditions
Mitochondrial Diseases, Myalgic Encephalomyelitis Chronic Fatigue Syndrome, Post-COVID-19 Condition, Postural Orthostatic Tachycardia Syndrome, Lyme Disease, Post-Treatment Lyme Disease Syndrome, Fibromyalgia, Cancer-Related Fatigue, Neuromuscular Diseases, Fatigue, POLG-Related Disorders
Interventions
Mito Map Energy Score and Home Functional Assessments
Other
Lead sponsor
AI Agent Vault, Inc. d/b/a Precision Mito
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Fort Myers, Florida
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 8, 2026, 5:36 AM EDT
Recruiting Not applicable Interventional

Improving the Health and Social Participation of People With Disabilities From Underrepresented Groups Post COVID

NCT05792852
View directory record Official record
Conditions
Disabilities Multiple
Interventions
ENGAGE
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 24, 2025 · Synced Oct 8, 2026, 5:36 AM EDT
Completed No phase listed Observational

An Observational Study of Neurologic Function After COVID-19 Infection

NCT04564287
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Oct 8, 2026, 5:36 AM EDT
Recruiting No phase listed Observational

Natural History of Post-Coronavirus Disease 19 Convalescence at the National Institutes of Health

NCT04573062
View directory record Official record
Conditions
Post-Coronavirus Disease 19
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years to 100 Years
Enrollment
1,590 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 8, 2026, 5:36 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

SHIELD Study: Using Naso-oropharyngeal Antiseptic Decolonization to Reduce COVID-19 Viral Shedding

NCT04478019
View directory record Official record
Conditions
COVID-19, SARS-CoV 2
Interventions
10% Povidone-iodine nasal decolonization swab plus 0.12% CHG oral rinse
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
245 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 14, 2022 · Synced Oct 8, 2026, 5:36 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Antiviral Efficacy and Acceptability of Mouth Rinses for Inactivation of COVID-19

NCT04748783
View directory record Official record
Conditions
COVID19, Coronavirus Infection, SARS CoV-2 Infection
Interventions
Water, Peroxyl, Periogard, Colgate Total Zero
Other · Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 65 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 16, 2022 · Synced Oct 8, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Results available

Convalescent Plasma to Limit SARS-CoV-2 Associated Complications

NCT04373460
View directory record Official record
Conditions
SARS-CoV 2
Interventions
SARS-CoV-2 convalescent plasma, Plasma from a volunteer donor
Biological
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
1,225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
29
States / cities
Birmingham, Alabama • Chinle, Arizona • Phoenix, Arizona + 24 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2023 · Synced Oct 8, 2026, 5:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

CLARE Mobile App for Caregiver Training and Support

NCT05877586
View directory record Official record
Conditions
Caregivers, Technology
Interventions
CLARE app
Other
Lead sponsor
Duke University
Other
Eligibility
35 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 18, 2025 · Synced Oct 8, 2026, 5:36 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Surgical Telemedicine in the COVID-19 Pandemic Era

NCT04376710
View directory record Official record
Conditions
COVID, Surgery
Interventions
Completion of pre-pandemic survey, Completion of survey after peak of pandemic, Completion of post telemedicine encounter survey
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
31 Days to 18 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 28, 2020 · Synced Oct 8, 2026, 5:36 AM EDT
Terminated Phase 2 Interventional Results available

Pragmatic Factorial Trial of Hydroxychloroquine, Azithromycin, or Both for Treatment of Severe SARS-CoV-2 Infection

NCT04335552
View directory record Official record
Conditions
SARS-CoV-2
Interventions
Standard of care, Hydroxychloroquine, Azithromycin
Other · Drug
Lead sponsor
Duke University
Other
Eligibility
12 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
4
States / cities
Durham, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated May 17, 2021 · Synced Oct 8, 2026, 5:36 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

The COVID-19 Back-to-Normal Study: Analysis of Multiple Outcomes

NCT04832932
View directory record Official record
Conditions
COVID-19 Vaccines
Interventions
COVID-19 vaccines
Biological
Lead sponsor
Mebo Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
2
States / cities
Miami, Florida • Vonore, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 26, 2024 · Synced Oct 8, 2026, 5:36 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Study of Monovalent and Bivalent Recombinant Protein Vaccines Against COVID-19 in Adults 18 Years of Age and Older

NCT04904549
View directory record Official record
Conditions
COVID-19
Interventions
SARS-CoV-2 adjuvanted recombinant protein vaccine (monovalent D614) (primary series), SARS-CoV-2 adjuvanted recombinant protein vaccine (bivalent D614 + B.1.351) (primary series), Placebo, SARS-CoV-2 adjuvanted recombinant protein vaccine (monovalent B.1.351) (booster dose) >= 4 months after last vaccination, SARS-CoV-2 adjuvanted recombinant protein vaccine(monovalent D614)(primary series)& SARS-CoV-2 adjuvanted recombinant protein vaccine(monovalent B.1.351)(booster dose)>=4 months after last vaccination
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
23,670 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
23
States / cities
Birmingham, Alabama • Huntsville, Alabama • Rolling Hills Estates, California + 20 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 8, 2026, 5:36 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

SARS-CoV-2/COVID-19 Prevalence Study

NCT04658121
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
COVID-19 Prevention Network
Network
Eligibility
2 Months and older
Enrollment
26,211 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
14
States / cities
Aurora, Colorado • Miami, Florida • Atlanta, Georgia + 9 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Oct 8, 2026, 5:36 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

COVID-19 Oral and Subcutaneous Vaccination Using a 2nd Generation (E1/E2B/E3-Deleted) Adenovirus Platform in Healthy Volunteers in USA

NCT04732468
View directory record Official record
Conditions
Covid19
Interventions
hAd5-S-Fusion+N-ETSD (Suspension for injection), hAd5-SFusion+ N-ETSD (Oral capsule)
Biological · Drug
Lead sponsor
ImmunityBio, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
El Segundo, California • Newport Beach, California
Source: ClinicalTrials.gov public record
Updated Oct 15, 2024 · Synced Oct 8, 2026, 5:36 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Serological Surveillance for COVID-19 in Central North Carolina

NCT04490174
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 100 Years
Enrollment
643 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 2, 2026 · Synced Oct 8, 2026, 5:36 AM EDT
Completed Not applicable Interventional Results available

Vagal Nerve Stimulation for Post COVID Fatigue

NCT05445427
View directory record Official record
Conditions
Post COVID Syndrome, Fatigue, Headache
Interventions
vagal nerve stimulator
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 8, 2026, 5:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Theta Burst Transcranial Magnetic Stimulation of Fronto-parietal Networks: Modulation by Mental State

NCT04010461
View directory record Official record
Conditions
Healthy
Interventions
TMS, n-back working memory task
Device · Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 50 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 6, 2023 · Synced Oct 8, 2026, 5:36 AM EDT
Recruiting Phase 2 Interventional

A Study to Examine Anktiva for the Treatment of COVID-19.

NCT07123727
View directory record Official record
Conditions
Long COVID, Long COVID Syndrome, Long Covid 19
Interventions
Anktiva
Drug
Lead sponsor
ImmunityBio, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
El Segundo, California
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 8, 2026, 5:36 AM EDT