Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 14, 2026, 11:22 PM EDT

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Showing 793–816 of 2,347 matching trials from the live ClinicalTrials.gov search.
Conditions
Influenza, COVID-19, Vaccination Hesitancy
Interventions
Text message influenza vaccine reminders, Text message COVID-19 vaccine reminders, Text message influenza and COVID-19 vaccine reminders
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
6 Months to 17 Years
Enrollment
66,147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
4
States / cities
Itasca, Illinois • New York, New York • Philadelphia, Pennsylvania
Conditions
COVID-19
Interventions
Hydroxychloroquine, Azithromycin
Drug
Lead sponsor
LCMC Health
Other
Eligibility
18 Years to 100 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
New Orleans, Louisiana
Conditions
Covid19
Interventions
GT0918, Standard of care, Matching placebo
Drug
Lead sponsor
Suzhou Kintor Pharmaceutical Inc,
Industry
Eligibility
18 Years and older
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
8
States / cities
Hialeah, Florida • Lansing, Michigan • Hannibal, Missouri + 5 more
Completed No phase listed Observational Accepts healthy volunteers

Repeated Employee Testing for Understanding Our Recovery to Normal

NCT04472793
Conditions
COVID-19
Interventions
SARS-CoV-2
Diagnostic Test
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years and older
Enrollment
236 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Cincinnati, Ohio
Conditions
COVID-19
Interventions
diagnostic tests for COVID-19 infection
Diagnostic Test
Lead sponsor
Texas Cardiac Arrhythmia Research Foundation
Other
Eligibility
18 Years to 85 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Austin, Texas
Conditions
Smell Dysfunction, Olfactory Disorder, Long COVID
Interventions
Trigeminal Nerve Stimulation (TNS), Active Smell Training (ST), Placebo Smell Training (PBO)
Device · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Charleston, South Carolina
Conditions
Post Acute COVID 19 Syndrome, Memory Impairment, Memory Dysfunction, Cognitive Dysfunction
Interventions
HOBSCOTCH-PACS
Behavioral
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
20 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Lebanon, New Hampshire
Completed Not applicable Interventional Accepts healthy volunteers Results available

Emails Promoting COVID-19 Vaccination Among Healthcare Workers

NCT04728594
Conditions
Vaccination Refusal, Communication
Interventions
Social Proof, Reframing, Scarcity Message
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
Not listed
Enrollment
9,566 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Danville, Pennsylvania
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

COVID-19 Reactogenicity

NCT07051031
Conditions
COVID-19
Interventions
Nuvaxovid (NVX-CoV2705), mNEXSPIKE mRNA-1283
Drug
Lead sponsor
Marcel Curlin
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Portland, Oregon
Conditions
SARS-CoV-2
Interventions
mRNA-1273, Placebo
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years and older
Enrollment
30,415 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
100
States / cities
Birmingham, Alabama • Chandler, Arizona • Glendale, Arizona + 79 more
Conditions
SARS-CoV-2
Interventions
mRNA-1283, mRNA-1273, Placebo
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
5
States / cities
Chandler, Arizona • San Diego, California • Melbourne, Florida + 2 more
Conditions
COVID-19, Influenza A, Influenza B
Interventions
COVID/Flu Detect™ Rapid Self-Test
Diagnostic Test
Lead sponsor
InBios International, Inc.
Industry
Eligibility
2 Years and older
Enrollment
899 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
10
States / cities
Birmingham, Alabama • Miami, Florida • Boise, Idaho + 5 more
Conditions
COVID-19 Vaccination
Interventions
Community Health Worker Intervention to Enhance Vaccination Behavior (CHW-VB)
Behavioral
Lead sponsor
RAND
Other
Eligibility
18 Years and older
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
4
States / cities
Brooklyn, New York • New York, New York • The Bronx, New York
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
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
Conditions
COVID-19 Infection
Interventions
Clazakizumab, Placebo
Drug
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Houston, Texas
Conditions
Post-Acute COVID-19 Syndrome
Interventions
osteopathic manipulative treatment (OMT)
Procedure
Lead sponsor
A.T. Still University of Health Sciences
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Kirksville, Missouri
Completed No phase listed Observational Accepts healthy volunteers

Effects of the COVID-19 Health Emergency on Biopsychosocial Health

NCT04409535
Conditions
Activities, Mental Health Issue, Life Style
Interventions
WHOQOL-BREF survey
Other
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years to 85 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Albuquerque, New Mexico
Completed Not applicable Interventional Accepts healthy volunteers

Covid-19 Virtual Recovery Study

NCT04950725
Conditions
Covid19
Interventions
Strength RMT, Strength RMT and nasal breathing, Endurance RMT, Endurance RMT and nasal breathing, Low dose RMT
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
2,268 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Scottsdale, Arizona
Completed No phase listed Observational

Predictors of Severe COVID-19 Outcomes

NCT04388813
Conditions
Acute Respiratory Distress Syndrome, COVID-19
Interventions
Not listed
Lead sponsor
Verily Life Sciences LLC
Industry
Eligibility
18 Years and older
Enrollment
494 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
8
States / cities
Tucson, Arizona • Los Angeles, California • Chicago, Illinois + 4 more
Conditions
Sars-CoV2, COVID-19
Interventions
Favipiravir, Placebo, Standard of care treatment
Drug · Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
149 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Stanford, California
Conditions
Covid19
Interventions
Hyperpolarized Xe129
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Kansas City, Kansas
Conditions
Coronavirus Disease 2019 (COVID-19), SARS-CoV-2
Interventions
Biological sample collection, Data Collection: Clinical Care Assessments
Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
1,227 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
17
States / cities
Tucson, Arizona • Los Angeles, California • San Francisco, California + 14 more
Completed No phase listed Observational Accepts healthy volunteers

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

NCT04548895
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
Conditions
SARS-CoV Infection
Interventions
Vitamin D3 or Placebo, Doctella telehealth monitoring
Drug · Device
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chicago, Illinois