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ClinicalTrials.gov public records Last synced Oct 5, 2026, 1:41 PM EDT

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Showing 49–72 of 326 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Covid-19 Vaccine Clear all
Completed Phase 2 Interventional Accepts healthy volunteers

A Study to Investigate the Immunogenicity, Reactogenicity, and Safety of mRNA-1083 (Influenza and COVID-19) Vaccine in Adults ≥18 to <65 Years of Age

NCT06864143
View directory record Official record
Conditions
Influenza, SARS-CoV-2
Interventions
mRNA-1083 Composition 1 Dose A Lot A, mRNA-1083 Composition 1 Dose A Lot B, mRNA-1083 Composition 1 Dose B, mRNA-1083 Composition 1 Dose C, mRNA-1083 Composition 2 Dose A, mRNA-1083 Composition 2 Dose B, mRNA-1083 Composition 3 Dose A, mRNA-1083 Composition 3 Dose B, Influenza Vaccine, COVID-19 Vaccine, Investigational Influenza Vaccine, Investigational COVID-19 Vaccine Lot A, Investigational COVID-19 Vaccine Lot B
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
1,320 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
17
States / cities
Scottsdale, Arizona • San Diego, California • Stockbridge, Georgia + 13 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Oct 5, 2026, 1:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

To Evaluate the Safety, Tolerability, Efficacy and Immunogenicity of BNT162b2 Boosting Strategies Against COVID-19 in Participants ≥12 Years of Age.

NCT04955626
View directory record Official record
Conditions
SARS-CoV-2 Infection, COVID-19
Interventions
BNT162b2, Placebo, BNT162b2 OMI, Combination BNT162b2 and BNT162b2 OMI, Combination (Bivalent) BNT162b2 and BNT162b2 OMI
Biological · Other
Lead sponsor
BioNTech SE
Industry
Eligibility
12 Years and older
Enrollment
16,372 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
139
States / cities
Athens, Alabama • Birmingham, Alabama • Huntsville, Alabama + 99 more
Source: ClinicalTrials.gov public record
Updated Nov 10, 2025 · Synced Oct 5, 2026, 1:41 PM EDT
Completed No phase listed Observational

Vaccine-generated Immunity in Ocrelizumab-treated Patients: Longitudinal Assessments (VIOLA)

NCT04843774
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
SARS-COV-2 mRNA Vaccine
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
2
States / cities
Denver, Colorado • New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 8, 2023 · Synced Oct 5, 2026, 1:41 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

KBP-201 COVID-19 Vaccine Trial in Healthy Volunteers

NCT04473690
View directory record Official record
Conditions
Covid19
Interventions
Low Dose of KBP-COVID-19, High Dose of KBP-COVID-19, Placebo
Biological
Lead sponsor
KBio Inc
Industry
Eligibility
18 Years to 85 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
6
States / cities
West Palm Beach, Florida • Meridian, Idaho • Winston-Salem, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated May 18, 2025 · Synced Oct 5, 2026, 1:41 PM 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 5, 2026, 1:41 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Comparative Immunogenicity of Respiratory Virus Vaccines (CIRV2) Study

NCT07287137
View directory record Official record
Conditions
COVID -19, COVID - 19, COVID 19, Influenza, Respiratory Virus, Respiratory Viruses, Respiratory Virus Infection, Respiratory Virus Infections
Interventions
Pfizer-BioNTech mRNA COVID-19 vaccine, Novavax recombinant protein vaccine
Drug
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years to 79 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 5, 2026, 1:41 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate the Safety & Immunogenicity of IMNN-101 Administered in Healthy Adults Previously Vaccinated Against SARS-CoV-2

NCT06283459
View directory record Official record
Conditions
SARS CoV 2 Infection
Interventions
IMNN-101
Biological
Lead sponsor
Imunon
Industry
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Boston, Massachusetts • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Oct 5, 2026, 1:41 PM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Safety and Tolerability of a Newcastle Disease Virus-Based Mucosal COVID-19 Vaccine in Previously Vaccinated Adults

NCT07215520
View directory record Official record
Conditions
COVID-19
Interventions
NDV-HXP-S-KP.2, COVID-19 mRNA Vaccine
Biological
Lead sponsor
CastleVax Inc.
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
Colorado Springs, Colorado • Burlington, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Oct 5, 2026, 1:41 PM 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 5, 2026, 1:41 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 5, 2026, 1:41 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

VEText Message Framing and Covid-19 Vaccine Uptake Among at Risk Veterans

NCT04805931
View directory record Official record
Conditions
Covid19, Vaccine Refusal
Interventions
Behavioral economics
Behavioral
Lead sponsor
VA Puget Sound Health Care System
Federal
Eligibility
18 Years and older
Enrollment
4,311 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 28, 2021 · Synced Oct 5, 2026, 1:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Use of a Live Attenuated Vaccine as an Immune-based Preventive Against COVID-19-associated Sepsis

NCT04475081
View directory record Official record
Conditions
Sepsis Syndrome
Interventions
MMR vaccine
Biological
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 26, 2024 · Synced Oct 5, 2026, 1:41 PM 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 5, 2026, 1:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Prompt to Bundle COVID-19 Booster and Flu Shot

NCT05586165
View directory record Official record
Conditions
COVID-19, Vaccines
Interventions
Reminder to boost protection against COVID-19, Flu Tag Along, COVID-19 Booster & Flu Bundle
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
109,493 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Oct 5, 2026, 1:41 PM 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 5, 2026, 1:41 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Multilevel Intervention of COVID-19 Vaccine Uptake Among Latinos

NCT06156228
View directory record Official record
Conditions
Vaccine Hesitancy
Interventions
Multilevel Intervention
Behavioral
Lead sponsor
San Diego State University
Other
Eligibility
18 Years and older
Enrollment
238 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jul 4, 2025 · Synced Oct 5, 2026, 1:41 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Immunogenicity and Safety of mRNA Vaccine Boosters for SARS-CoV-2 (COVID-19) Variants

NCT04927065
View directory record Official record
Conditions
SARS-CoV-2
Interventions
mRNA-1273.211, mRNA-1273, mRNA-1273.617.2, mRNA-1273.213, mRNA-1273.529, mRNA-1273.214, mRNA-1273.222, mRNA-1273.815, mRNA-1273.231
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years and older
Enrollment
5,161 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
23
States / cities
Sacramento, California • Hollywood, Florida • Jacksonville, Florida + 18 more
Source: ClinicalTrials.gov public record
Updated Feb 28, 2025 · Synced Oct 5, 2026, 1:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Understanding Immunity to the COVID-19 Vaccines

NCT04664309
View directory record Official record
Conditions
COVID-19, Immunity, Vaccine
Interventions
No intervention
Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 28, 2022 · Synced Oct 5, 2026, 1:41 PM EDT
Terminated Not applicable Interventional Results available

COVID-19 Vaccine Hesitancy Counseling Intervention for Pharmacists

NCT05926544
View directory record Official record
Conditions
COVID-19
Interventions
Standard implementation webinar and online training, Virtual facilitation
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced Oct 5, 2026, 1:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

A Study to Learn About COVID-19 RNA-Based Variant-Adapted Vaccine Candidate(s) Against SARS-CoV-2 in Participants Ages 12 Through 64 Years Considered at Higher Risk of Severe COVID-19, and Participants Ages ≥65 Years

NCT07069309
View directory record Official record
Conditions
COVID-19, SARS-COV-2 Infection
Interventions
BNT162b2 (2025/2026 recommended SARS-CoV-2 strain)
Biological
Lead sponsor
BioNTech SE
Industry
Eligibility
12 Years and older
Enrollment
774 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
19
States / cities
Walnut Creek, California • Milford, Connecticut • Washington D.C., District of Columbia + 13 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Oct 5, 2026, 1:41 PM EDT
Completed No phase listed Observational

Post COVID-19 Vaccination Analysis in Healthcare Worker Recipients

NCT04922944
View directory record Official record
Conditions
Covid19, Vaccine Reaction
Interventions
COVID-19 vaccine
Drug
Lead sponsor
Huntington Memorial Hospital
Other
Eligibility
Not listed
Enrollment
167 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Pasadena, California
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 5, 2026, 1:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Discussing COVID-19 Vaccines in Private Facebook Groups

NCT05422898
View directory record Official record
Conditions
COVID-19
Interventions
Gist messages on COVID-19 vaccination, COVID-19 vaccine information
Behavioral
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older
Enrollment
508 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jun 21, 2022 · Synced Oct 5, 2026, 1:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Community-engaged Optimization of COVID-19 Rapid Evaluation And TEsting Experiences

NCT05894655
View directory record Official record
Conditions
COVID-19, COVID-19 Pandemic
Interventions
COVID-19 walk-up, on-site testing strategy, Community Health Worker (CHW) leading testing navigation and general preventive care reminders, No-cost self-testing kit vending machines
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
Not listed
Enrollment
6,527 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
San Ysidro, California
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Oct 5, 2026, 1:41 PM EDT
Active, not recruiting No phase listed Observational

A Study to Assess Long-term Outcomes of Myocarditis Following Administration of COVID-19 mRNA Vaccine (SPIKEVAX)

NCT06189053
View directory record Official record
Conditions
Myocarditis
Interventions
Not listed
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
Not listed
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 1, 2025 · Synced Oct 5, 2026, 1:41 PM EDT