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ClinicalTrials.gov public records Last synced Oct 7, 2026, 4:10 AM EDT

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Showing 49–72 of 229 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: COVID-19 Vaccine 2 Clear all
Completed No phase listed Observational

A Multicenter Study to Assess Response to COVID-19 Vaccine in Multiple Sclerosis Participants Treated With Ofatumumab

NCT04847596
View directory record Official record
Conditions
Relapsing Multiple Sclerosis
Interventions
Ofatumumab, Covid-19 vaccine
Other
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
4
States / cities
Phoenix, Arizona • Owosso, Michigan • St Louis, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Text-based Interventions to Promote COVID-19 Vaccinations

NCT04800965
View directory record Official record
Conditions
Covid19, Vaccines
Interventions
Patient MyChart Scheduling Link, Patient Educational Video, Enhanced Follow through Message
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
200,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Westwood, Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 13, 2022 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Phase 2 Interventional Results available

DC Vaccine Combined With IL-2 and IFNα-2a in Treating Patients With mRCC

NCT00085436
View directory record Official record
Conditions
Kidney Cancer
Interventions
Aldesleukin,, autologous tumor cell vaccine, recombinant interferon alfa
Biological
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jun 26, 2018 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

COVID-19 Vaccine Education at the Point of Testing to Increase Vaccine Uptake in Vulnerable Communities in SE Louisiana

NCT04939506
View directory record Official record
Conditions
Covid19, Vaccine Refusal, Vaccine Hesitancy
Interventions
COVID-19 Vaccine Education at the Point of COVID-19 Testing
Behavioral
Lead sponsor
Xavier University of Louisiana.
Other
Eligibility
18 Years to 99 Years
Enrollment
377 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Oct 7, 2026, 4:10 AM EDT
Active, not recruiting Phase 2Phase 3 Interventional Accepts healthy volunteers

Study of a Recombinant Coronavirus-Like Particle COVID-19 Vaccine in Adults

NCT04636697
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
Intramuscular injection, Intramuscular vaccine
Drug · Biological
Lead sponsor
Medicago
Industry
Eligibility
18 Years and older
Enrollment
30,918 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
45
States / cities
Birmingham, Alabama • Tempe, Arizona • Canoga Park, California + 39 more
Source: ClinicalTrials.gov public record
Updated Apr 6, 2022 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety of Simultaneous mRNA COVID-19 Vaccine With Other Childhood Vaccines in Young Children

NCT06038617
View directory record Official record
Conditions
Fever After Vaccination, Fever, Seizures Fever
Interventions
mRNA COVID-19 Vaccine, Routine Childhood Vaccinations
Biological
Lead sponsor
Duke University
Other
Eligibility
6 Months to 4 Years
Enrollment
347 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
5
States / cities
Oakland, California • Atlanta, Georgia • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 7, 2026, 4:10 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Study Assessing the Safety, Tolerability, Immunogenicity of COVID-19 Vaccine Candidate PRIME-2-CoV_Beta, Orf Virus Expressing SARS-CoV_2 Spike and Nucleocapsid Proteins

NCT05367843
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
PRIME-2-CoV_Beta
Drug
Lead sponsor
Speransa Therapeutics
Industry
Eligibility
18 Years to 85 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
5
States / cities
Florida City, Florida • Chicago, Illinois • Kansas City, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2024 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Novelty, Conformity and Trust in COVID-19 Vaccines

NCT04693689
View directory record Official record
Conditions
Trust
Interventions
RNA vaccine, 20% adoption rate, 40% adoption rate, 60% adoption rate, 80% adoption rate, Conventional vaccine, 0% adoption rate
Other
Lead sponsor
National University of Singapore
Other
Eligibility
18 Years and older
Enrollment
35,180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
San Mateo, California
Source: ClinicalTrials.gov public record
Updated Feb 22, 2022 · Synced Oct 7, 2026, 4:10 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Safety, Reactogenicity, and Effectiveness of mRNA-1273.214 SARS-CoV-2 (COVID-19) Vaccine in Infants

NCT05584202
View directory record Official record
Conditions
SARS-CoV-2
Interventions
mRNA-1273.214, Placebo
Biological · Other
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
2 Months to 6 Months
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
39
States / cities
Bessemer, Alabama • Birmingham, Alabama • Tucson, Arizona + 34 more
Source: ClinicalTrials.gov public record
Updated Nov 26, 2025 · Synced Oct 7, 2026, 4:10 AM EDT
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 7, 2026, 4:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1 Study to Assess the Safety and Immunogenicity of JCXH-221, an MRNA-based Broadly Protective COVID-19 Vaccine

NCT05743335
View directory record Official record
Conditions
COVID-19, Infectious Disease
Interventions
JCXH-221, Placebo
Biological · Other
Lead sponsor
Immorna Biotherapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
4
States / cities
Hallandale, Florida • Savannah, Georgia • Lincoln, Nebraska + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study on the Safety and Immune Response of Investigational COVID-19 mRNA Vaccines in Healthy Adults

NCT05960097
View directory record Official record
Conditions
SARS-CoV-2, COVID-19
Interventions
CV0701 mRNA COVID-19 Vaccine (Low dose), CV0701 mRNA COVID-19 Vaccine (Medium dose), CV0701 mRNA COVID-19 Vaccine (High dose), CV0601 mRNA COVID-19 Vaccine, Control vaccine, CV0801 mRNA COVID-19 Vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
692 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
3
States / cities
Sacramento, California • Hollywood, Florida • Peoria, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 23, 2025 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate Safety and Effectiveness of mRNA-1273 COVID-19 Vaccine in Healthy Children Between 6 Months of Age and Less Than 12 Years of Age

NCT04796896
View directory record Official record
Conditions
SARS-CoV-2
Interventions
mRNA-1273, Placebo, mRNA-1273.214
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
6 Months to 11 Years
Enrollment
11,942 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
83
States / cities
Birmingham, Alabama • Phoenix, Arizona • Anaheim, California + 68 more
Source: ClinicalTrials.gov public record
Updated Jun 13, 2025 · Synced Oct 7, 2026, 4:10 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Safety and Serum Virus Neutralizing Antibody Responses of VYD2311, a COVID-19 Vaccine, and Coadministered VYD2311 With a COVID-19 Vaccine

NCT07655180
View directory record Official record
Conditions
COVID-19
Interventions
COVID-19 mRNA vaccine, VYD2311, Placebo (Normal Saline)
Drug
Lead sponsor
Invivyd, Inc.
Industry
Eligibility
18 Years to 49 Years
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effectiveness of Interactive Voice Response for COVID-19 Vaccination Training in the Democratic Republic of the Congo

NCT05107479
View directory record Official record
Conditions
COVID-19 Vaccine Knowledge, COVID-19 Vaccine Beliefs
Interventions
COVID-19 Vaccine IVR Training, Control Condition
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
8,959 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 21, 2022 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study of the Safety of and Immune Response to Varying Doses of a Vaccine Against COVID-19 in Healthy Adults

NCT04758962
View directory record Official record
Conditions
Virus Diseases
Interventions
1 µg CoV2 SAM (LNP)
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 50 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Oct 7, 2026, 4:10 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Specimen Collection Study From Coronavirus Disease 2019 (COVID-19) Vaccinated Adults and Adolescents

NCT05252910
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
Pharm-Olam, LLC
Industry
Eligibility
12 Years and older
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
6
States / cities
Boston, Massachusetts • Omaha, Nebraska • Syracuse, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Phase 4 Interventional Results available

Assessing Safety of Coronavirus Infection (COVID-19) Messenger RNA (mRNA) Vaccine Administration in the Setting of a Previous Adverse Reaction

NCT05212610
View directory record Official record
Conditions
COVID-19, Corona Virus Infection
Interventions
Pfizer-BioNTech mRNA COVID-19 vaccine, Moderna mRNA COVID-19 vaccine
Biological
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Testing Multiple Behavioral Science Strategies to Increase Flu-Shot Rates

NCT04565353
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu shot text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
74,811 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
2
States / cities
Danville, Pennsylvania • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 1, 2022 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Not applicable Interventional Results available

Brief Digital Intervention to Increase COVID-19 Vaccination Among Individuals With Anxiety or Depression

NCT06119854
View directory record Official record
Conditions
Misinformation, Vaccine Hesitancy, Anxiety, Depression, COVID-19
Interventions
Attitudinal inoculation, Cognitive-behavioral therapy-informed intervention, Conventional public health messaging
Behavioral
Lead sponsor
City University of New York, School of Public Health
Other
Eligibility
18 Years and older
Enrollment
1,419 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Study of Recombinant Protein Vaccines With Adjuvant as a Primary Series and as a Booster Dose Against COVID-19 in Adults 18 Years of Age and Older

NCT04762680
View directory record Official record
Conditions
COVID-19
Interventions
SARS-CoV-2 recombinant protein vaccine Phase 2 Formulation 1, SARS-CoV-2 recombinant protein vaccine Phase 2 Formulation 2, SARS-CoV-2 recombinant protein vaccine Phase 2 Formulation 3, SARS-CoV-2 adjuvanted recombinant protein vaccine, monovalent (D614)-AS03, Dosage A, SARS-CoV-2 adjuvanted recombinant protein vaccine, monovalent (B.1.351)-AS03, SARS-CoV-2 adjuvanted recombinant protein vaccine, monovalent (D614)-AS03, Dosage B, SARS-CoV-2 adjuvanted recombinant protein vaccine, monovalent (B.1.351)-AS03 Alternative Exploratory Formulation 1, SARS-CoV-2 adjuvanted recombinant protein vaccine, monovalent (B.1.351)-AS03 Alternative Exploratory Formulation 2, SARS-CoV-2 adjuvanted recombinant protein vaccine, monovalent (B.1.351)-AS03 Alternative Exploratory Formulation 3, SARS-CoV-2 adjuvanted recombinant protein vaccine, monovalent (B.1.351)-AS03 Alternative Exploratory Formulation 4, SARS-CoV-2 adjuvanted recombinant protein vaccine, bivalent (D614+B.1.351)-AS03
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
3,159 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
30
States / cities
Birmingham, Alabama • Chandler, Arizona • Glendale, Arizona + 26 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2025 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Not applicable Interventional Results available

RADx-UP Phase 3D (Oregon Saludable: Juntos Podemos)

NCT05910879
View directory record Official record
Conditions
Health Behavior, Health Care Utilization, Vaccine Hesitancy
Interventions
Self-Affirmation Implementation Intentions (SAII) Intervention, Promotores de Salud (Health Education)
Behavioral
Lead sponsor
University of Oregon
Other
Eligibility
18 Years and older
Enrollment
625 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Study to Evaluate Safety and Immunogenicity of COVID-19 Vaccine in Children 6 Months to < 12 Years

NCT05468736
View directory record Official record
Conditions
COVID-19
Interventions
SARS-CoV-2 rS/Matrix-M1 Adjuvant (Initial Vaccination Period), Placebo
Biological · Other
Lead sponsor
Novavax
Industry
Eligibility
6 Months to 11 Years
Enrollment
3,600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
47
States / cities
Little Rock, Arkansas • Anaheim, California • Bellflower, California + 41 more
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 7, 2026, 4:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing Multiple Behavioral Science Strategies to Increase Flu-Shot Rates at a Large Retail Pharmacy

NCT04590066
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu shot text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
734,383 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Oct 7, 2026, 4:10 AM EDT