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Showing 1–24 of 29 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Vaccine Reaction Clear all
Completed No phase listed Observational

mRNA Based-Covid-19 Vaccine Effects on Blood Glucose Levels

NCT04923386
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Diabetes Mellitus, Type 1, Hyperglycemia, Vaccine Adverse Reaction
Interventions
None (not interventional)
Other
Lead sponsor
Levenson, David I., M.D.
Individual
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Boca Raton, Florida
Source: ClinicalTrials.gov public record
Updated Aug 16, 2022 · Synced Sep 6, 2026, 6:50 AM EDT
Completed Phase 1 Interventional

Vaccine Therapy in Treating Patients With Stage I, Stage II, or Stage IIIA Non-small Cell Lung Cancer or With Stage I or Stage II Mesothelioma

NCT00003974
View directory record Official record
Conditions
Lung Cancer, Malignant Mesothelioma
Interventions
lung tumor associated antigen, DetoxPC, chemotherapy, cyclophosphamide
Biological · Drug
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
20 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2000
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Mar 6, 2011 · Synced Sep 6, 2026, 6:50 AM EDT
Completed No phase listed Observational

Myocardial Injury and Dysfunction Associated With COVID-19 Vaccination

NCT05359250
View directory record Official record
Conditions
Myocardial Injury, COVID-19, Vaccine Reaction
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 3, 2025 · Synced Sep 6, 2026, 6:50 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Safety, Reactogenicity and Immunogenicity of a Venezuelan Equine Encephalitis DNA Vaccine Candidate Administered by Jet Injection

NCT06002503
View directory record Official record
Conditions
Vaccine Reaction
Interventions
Venezuelan Equine Encephalitis DNA Vaccine, PharmaJet Stratis Needle-free Injection System, PharmaJet Tropis Needle-free Injection System
Drug · Device
Lead sponsor
PharmaJet, Inc.
Industry
Eligibility
18 Years to 49 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 23, 2024 · Synced Sep 6, 2026, 6:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Kinetics of the Immune Response to Inactivated Influenza Vaccine in Healthy Adults

NCT03743688
View directory record Official record
Conditions
Influenza, Influenza, Human, Vaccine Reaction, Influenza A, Influenza Type B, Influenza A H1N1, Influenza A H3N2
Interventions
Influenza Vaccine Recipients
Biological
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 45 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 4, 2019 · Synced Sep 6, 2026, 6:50 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 26, 2026 · Synced Sep 6, 2026, 6:50 AM EDT
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 10, 2022 · Synced Sep 6, 2026, 6:50 AM EDT
Not yet recruiting Phase 2 Interventional

Effect of Metabolic Modulation on a Post-acute COVID-19 Vaccination Syndrome (PACVS) Cohort

NCT06967428
View directory record Official record
Conditions
Vaccine Adverse Reaction, Post Acute Covid-19 Vaccination Syndrome
Interventions
Combined metabolic modulator, Rice Protein Powder with Vitamin C
Combination Product · Dietary Supplement
Lead sponsor
Independent Medical Alliance
Other
Eligibility
16 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 12, 2025 · Synced Sep 6, 2026, 6:50 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Comparing the Incidence of Preeclampsia Between Pregnant Women Receiving Tdap Vaccinations at Week 28 or at Week 36

NCT04424693
View directory record Official record
Conditions
Pre-Eclampsia, Diphtheria, Tetanus and Pertussis Vaccine Reaction
Interventions
Tdap Vaccine Administration
Drug
Lead sponsor
Institute of Arthritis Research
Other
Eligibility
18 Years to 42 Years · Female only
Enrollment
1,600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Idaho Falls, Idaho
Source: ClinicalTrials.gov public record
Updated Jun 15, 2020 · Synced Sep 6, 2026, 6:50 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

VA-006 Vaccinia Vaccine (ACAM2000) for the Production of VIGIV

NCT01158157
View directory record Official record
Conditions
Smallpox Vaccine Adverse Reaction
Interventions
ACAM2000
Biological
Lead sponsor
Emergent BioSolutions
Industry
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Altamonte Springs, Florida
Source: ClinicalTrials.gov public record
Updated Mar 17, 2024 · Synced Sep 6, 2026, 6:50 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety of LAIV4 in Children With Asthma

NCT03600428
View directory record Official record
Conditions
Asthma in Children, Vaccine Adverse Reaction, Vaccine Reaction, Asthma, Wheezing, Influenza
Interventions
Live Attenuated Influenza Vaccine (LAIV), Inactivated Influenza Vaccine (IIV)
Biological
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
5 Years to 11 Years
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
3
States / cities
Durham, North Carolina • Cincinnati, Ohio • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 15, 2021 · Synced Sep 6, 2026, 6:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study of Seasonal Influenza Vaccine Against H5N1 Avian Influenza Virus

NCT01044095
View directory record Official record
Conditions
Influenza
Interventions
FluMist® live, attenuated, intranasal seasonal influenza vaccine, Fluzone® inactivated influenza virus vaccine
Biological
Lead sponsor
Armed Forces Research Institute of Medical Sciences, Thailand
Government
Eligibility
18 Years to 49 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
0
States / cities
Not listed
Source: ClinicalTrials.gov public record
Updated Jul 22, 2013 · Synced Sep 6, 2026, 6:50 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

A Trial For The Study of Falciparum Malaria Protein 013 Administered Via Intramuscular Injection in Healthy Adults

NCT04268420
View directory record Official record
Conditions
Vaccine Reaction
Interventions
FMP013, ALFQ
Drug
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 55 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 9, 2023 · Synced Sep 6, 2026, 6:50 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study of the Safety and Immunogenicity of Reduced Doses of the US Yellow Fever Vaccine

NCT05374317
View directory record Official record
Conditions
Yellow Fever Vaccination Reaction
Interventions
Yellow Fever Vaccine
Biological
Lead sponsor
US Army Medical Research Institute of Infectious Diseases
Federal
Eligibility
18 Years to 50 Years
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Frederick, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 6, 2026, 6:50 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

A Trial For The Study of Falciparum Malaria Protein 014 Administered Via Intramuscular Injection in Healthy Adults

NCT04296279
View directory record Official record
Conditions
Vaccine Reaction
Interventions
FMP014, ALFQ
Drug
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 55 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 18, 2021 · Synced Sep 6, 2026, 6:50 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

FLUAD® vs. Fluzone® High-Dose Study

NCT03183908
View directory record Official record
Conditions
Pain, Quality of Life, Injection Site Reaction, Side Effect of Drug, Adverse Drug Event
Interventions
FLUAD®, Fluzone® High-Dose
Biological
Lead sponsor
Duke University
Other
Eligibility
65 Years and older
Enrollment
757 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
4
States / cities
Atlanta, Georgia • Boston, Massachusetts • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2021 · Synced Sep 6, 2026, 6:50 AM EDT
Not listed No phase listed Observational

National Vaccine Adverse Event Reporting Survey and Etiology

NCT05095844
View directory record Official record
Conditions
COVID-19, Vaccine Adverse Reaction, Vaccine Reaction, Vaccine or Biological Substance, Unspecified Causing Adverse Effects in Therapeutic Use, Corona Virus Infection, Blood Clot, Thrombocytopenia, Neuritis, Vasculitis, Influenza, Guillain-Barré, GWAS, Genetic Sequencing
Interventions
vaccinated
Biological
Lead sponsor
Neuroganics LLC
Industry
Eligibility
5 Years to 99 Years
Enrollment
100,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Northglenn, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 17, 2022 · Synced Sep 6, 2026, 6:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The BOOSTED (Booster Options Or Switching Tested for Effectiveness and Downsides Study) Trial (COVID-19)

NCT05268185
View directory record Official record
Conditions
COVID-19, Vaccine Reaction, COVID-19 Pandemic
Interventions
Moderna Booster Vaccine, Pfizer Booster Vaccine
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
301 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Sep 6, 2026, 6:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of Safety, Tolerability and Immune Responses of Ebola-S and Marburg Vaccines in Healthy Adults

NCT04723602
View directory record Official record
Conditions
Ebola Virus Disease, Marburg Virus Disease
Interventions
cAd3-Marburg, cAd3-EBO-S
Biological
Lead sponsor
Albert B. Sabin Vaccine Institute
Other
Eligibility
18 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 2, 2022 · Synced Sep 6, 2026, 6:50 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Simultaneous mRNA COVID-19 and IIV4 Vaccination Study

NCT05028361
View directory record Official record
Conditions
Quality of Life, Injection Site Reaction, Adverse Drug Event, Systemic Reaction
Interventions
mRNA COVID-19, IIV4, Placebo (saline)
Biological · Other
Lead sponsor
Duke University
Other
Eligibility
5 Years and older
Enrollment
348 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
3
States / cities
Baltimore, Maryland • Durham, North Carolina • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 18, 2024 · Synced Sep 6, 2026, 6:50 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Understanding Poor Vaccine Responses to Hepatitis B Vaccination

NCT04674462
View directory record Official record
Conditions
Vaccine Reaction
Interventions
CpG-adjuvanted HBV Vaccine, Traditional HBV Vaccine
Biological
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 14, 2025 · Synced Sep 6, 2026, 6:50 AM 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 18, 2024 · Synced Sep 6, 2026, 6:50 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Vaccine Observation to Include All Communities for Equitable Science

NCT04770649
View directory record Official record
Conditions
Vaccine Response Impaired, Vaccine Adverse Reaction
Interventions
COVID-19 vaccine
Biological
Lead sponsor
Persephone Biosciences
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 4, 2024 · Synced Sep 6, 2026, 6:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Safety of Pediatric COVID-19 Vaccination

NCT05157191
View directory record Official record
Conditions
Pain, Injection Site Reaction, Adverse Drug Event
Interventions
Observational
Other
Lead sponsor
Duke University
Other
Eligibility
5 Years to 15 Years
Enrollment
299 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
5
States / cities
Oakland, California • Atlanta, Georgia • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Sep 6, 2026, 6:50 AM EDT