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ClinicalTrials.gov public records Last synced Oct 6, 2026, 4:01 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 73–96 of 1,167 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: SARS-COV2 Virus Clear all
Not listed No phase listed Observational Accepts healthy volunteers

(VIII): The Eight Study and Immunologic Response Sub-study

NCT05237024
View directory record Official record
Conditions
Vaccine Reaction
Interventions
Not listed
Lead sponsor
physIQ, Inc.
Industry
Eligibility
Not listed
Enrollment
130 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 11, 2022 · Synced Oct 6, 2026, 4:01 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

ABNCoV2 Vaccine in Adult Subjects Previously Vaccinated for SARS-CoV-2

NCT05329220
View directory record Official record
Conditions
COVID-19 Disease
Interventions
ABNCoV2, Comirnaty
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
18 Years and older
Enrollment
4,205 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
44
States / cities
Birmingham, Alabama • Mesa, Arizona • Tucson, Arizona + 37 more
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Oct 6, 2026, 4:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Incidence of COVID-19 Test Conversion in Post-surgical Patients

NCT04392323
View directory record Official record
Conditions
Sars-CoV2
Interventions
COVID-19 PCR and Serology
Diagnostic Test
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
111 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
2
States / cities
Manhasset, New York • New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Nov 8, 2021 · Synced Oct 6, 2026, 4:01 PM EDT
Completed No phase listed Observational

Natural History of Systemic and Nasal Mucosal Immunity to Influenza and SARS-CoV-2 in Adults After Vaccination

NCT04794829
View directory record Official record
Conditions
Influenza, COVID-19
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 120 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Oct 6, 2026, 4:01 PM EDT
Not yet recruiting No phase listed Observational

Understanding the Long-term Impact of COVID-19 in Adults

NCT07498504
View directory record Official record
Conditions
Long COVID, Long Covid19
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 100 Years
Enrollment
5,205 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 6, 2026, 4:01 PM 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 6, 2026, 4:01 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 6, 2026, 4:01 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Randomized Trial Evaluating a mRNA-VLP Vaccine's Immunogenicity and Safety for COVID-19

NCT06147063
View directory record Official record
Conditions
COVID-19, SARS-CoV-2 Infection
Interventions
AZD9838, Licensed SARS-CoV-2 mRNA vaccine, AZD6563
Biological
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
243 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
5
States / cities
Long Beach, California • Rolling Hills Estates, California • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 6, 2026, 4:01 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 6, 2026, 4:01 PM EDT
Completed Phase 2 Interventional

NE3107 in Adults With Neurological Symptoms of Long COVID

NCT06847191
View directory record Official record
Conditions
Long COVID
Interventions
NE3107, Placebo
Drug
Lead sponsor
BioVie Inc.
Industry
Eligibility
18 Years to 69 Years
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
20
States / cities
Palo Alto, California • San Francisco, California • Aurora, Colorado + 16 more
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 6, 2026, 4:01 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Parkinson's Disease and Experiences Throughout the COVID-19 Pandemic

NCT04720118
View directory record Official record
Conditions
Parkinson Disease, Covid19, Satisfaction, Patient, Quality of Life
Interventions
No Intervention
Other
Lead sponsor
Towson University
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Towson, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 1, 2021 · Synced Oct 6, 2026, 4:01 PM EDT
Completed Phase 2 Interventional Results available

COVID Protection After Transplant - Sanofi GSK (CPAT-SG) Study

NCT05518487
View directory record Official record
Conditions
COVID-19, Kidney Transplant
Interventions
Sanofi-GSK monovalent (B.1.351) CoV2 preS dTM-AS03 COVID-19 vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
6
States / cities
San Diego, California • San Francisco, California • Atlanta, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2025 · Synced Oct 6, 2026, 4:01 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of the AudibleHealth Dx AI/ML-Based Dx SaMD Using FCV-SDS in the Diagnosis of COVID-19 Illness

NCT05175690
View directory record Official record
Conditions
COVID19
Interventions
Diagnostic Software as Medical Device
Diagnostic Test
Lead sponsor
AudibleHealth AI, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated May 5, 2022 · Synced Oct 6, 2026, 4:01 PM EDT
Terminated No phase listed Observational

A Randomized Study to Determine the Expression of the Furin Protein in Patients With SARS-CoV-2 and Vaccinated Against Coronavirus

NCT05104840
View directory record Official record
Conditions
COVID-19, SARS-CoV-2, Furin, RGMc Processing, Paired Basic Amino Acid Cleaving Enzyme (PACE)
Interventions
Not listed
Lead sponsor
Center Trials & Treatment
Other
Eligibility
18 Years and older
Enrollment
2,432 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
4
States / cities
Jacksonville, Florida • Ocala, Florida • Charleston, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2023 · Synced Oct 6, 2026, 4:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Boosting COVID-19 Vaccination Uptake Using Wastewater Surveillance

NCT06698497
View directory record Official record
Conditions
Vaccine Uptake
Interventions
Communication Campaign
Behavioral
Lead sponsor
Syracuse University
Other
Eligibility
Not listed
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Oct 6, 2026, 4:01 PM EDT
Enrolling by invitation Phase 2 Interventional

DMSO Dual-Route Therapy for Refractory Tinnitus in Long-COVID and Post-COVID-19 Vaccine Injury

NCT07567274
View directory record Official record
Conditions
Tinnitus
Interventions
DMSO-based otic solution with betahistine, dexamethasone, and lidocaine, DMSO-based transdermal cream with levocarnitine and N-acetylcysteine
Drug
Lead sponsor
Leading Edge Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 6, 2026, 4:01 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 6, 2025 · Synced Oct 6, 2026, 4:01 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Healthcare Worker Exposure Response and Outcomes of Hydroxychloroquine

NCT04334148
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine, Placebo oral tablet
Drug
Lead sponsor
Adrian Hernandez
Other
Eligibility
18 Years and older
Enrollment
1,360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
34
States / cities
Aurora, Colorado • Gainesville, Florida • Jacksonville, Florida + 27 more
Source: ClinicalTrials.gov public record
Updated Oct 12, 2021 · Synced Oct 6, 2026, 4:01 PM EDT
Active, not recruiting Phase 2 Interventional

A Study to Evaluate VXA-CoV2-3.3 COVID-19 Vaccine Against Currently Approved/Authorized mRNA COVID-19 Injectable Booster Vaccine in Adults Previously Immunized Against COVID-19 Infection

NCT06672055
View directory record Official record
Conditions
SARS-CoV2, COVID-19
Interventions
VXA-CoV2-3.1, COMIRNATY®, VXA-CoV2-3.3
Biological
Lead sponsor
Vaxart
Industry
Eligibility
18 Years and older
Enrollment
5,485 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
145
States / cities
Anniston, Alabama • Birmingham, Alabama • Mobile, Alabama + 126 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Oct 6, 2026, 4:01 PM EDT
Suspended No phase listed Observational Accepts healthy volunteers

A Study to Explore the Role of Gut Flora in COVID-19 Infection

NCT04359836
View directory record Official record
Conditions
Gut Microbiome, Gastrointestinal Microbiome, COVID, COVID-19, Corona Virus Infection, Coronavirus, Coronaviridae Infections, Coronavirus 19, Coronavirus-19, COVID 19
Interventions
There is no intervention in this study
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 6, 2026, 4:01 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of AdCOVID in Healthy Adults (COVID-19 Vaccine Study)

NCT04679909
View directory record Official record
Conditions
Healthy Volunteers
Interventions
AdCOVID, Placebo
Biological · Other
Lead sponsor
Altimmune, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
6
States / cities
Hialeah, Florida • Melbourne, Florida • Peoria, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2023 · Synced Oct 6, 2026, 4:01 PM EDT
Terminated Phase 2Phase 3 Interventional

COVID MED Trial - Comparison Of Therapeutics for Hospitalized Patients Infected With COVID-19

NCT04328012
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
Losartan, Placebo
Drug
Lead sponsor
Bassett Healthcare
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cooperstown, New York
Source: ClinicalTrials.gov public record
Updated Mar 24, 2022 · Synced Oct 6, 2026, 4:01 PM 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 6, 2026, 4:01 PM EDT
Completed Not applicable Interventional

Narrative Intervention for Long COVID-19 (NICO)

NCT06091293
View directory record Official record
Conditions
Long COVID, Long Covid19
Interventions
Narrative Intervention for Long COVID-19 (NICO)
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 89 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 10, 2024 · Synced Oct 6, 2026, 4:01 PM EDT