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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Immunization; Infection Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Age and Response to Flu Vaccines

NCT03328325
View directory record Official record
Conditions
Influenza, Influenza Immunisation
Interventions
Influenza Virus Quadrivalent Inactivated Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
9 Years to 99 Years
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
2
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated May 23, 2021 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of Inactivated, Split-Virion Influenza Vaccine Compared With Standard Fluzone Vaccine in Infants and Children

NCT00391391
View directory record Official record
Conditions
Orthomyxoviridae Infection, Influenza, Myxovirus Infection
Interventions
Split, Inactivated, Trivalent Influenza Vaccine, Split, Inactivated, Trivalent Influenza Vaccine ( Fluzone® 2006/2007 Formulation)
Biological
Lead sponsor
Sanofi
Industry
Eligibility
6 Months to 8 Years
Enrollment
520 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
19
States / cities
Harrisburg, Arkansas • Little Rock, Arkansas • Trumann, Arkansas + 15 more
Source: ClinicalTrials.gov public record
Updated Nov 30, 2011 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity Study of Rift Valley Fever Vaccine, Inactivated

NCT00869713
View directory record Official record
Conditions
Rift Valley Fever
Interventions
Inactivated, Dried (TSI-GSD 200), RVF Vaccine
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2021
U.S. locations
1
States / cities
Fort Deterick, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2022 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Motivation, Syringe Exchange, and COVID-19

NCT05534061
View directory record Official record
Conditions
COVID-19 Pandemic
Interventions
Connect2Test
Behavioral
Lead sponsor
University of Oregon
Other
Eligibility
18 Years and older
Enrollment
349 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Jun 10, 2026, 9:37 PM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity Study of Venezuelan Equine Encephalomyelitis (VEE) Vaccine as Booster Vaccine in Adults

NCT03531242
View directory record Official record
Conditions
Venezuelan Equine Encephalomyelitis
Interventions
0.5 mL Inactivated, Dried, C-84, TSI-GSD 205, Lot 7, Run 1
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Fort Deterick, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 15, 2021 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Phase 1 Interventional

A Phase I Study of Autologous, Activated CD8(+) Lymphocytes Expanded In Vitro and Infused With or Without Recombinant Interleukin-2 to Patients With AIDS or Severe ARC

NCT00000680
View directory record Official record
Conditions
HIV Infections
Interventions
Zidovudine, Aldesleukin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1993
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Jun 10, 2026, 9:37 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Digital Storytelling to Reduce Pediatric Influenza Vaccination Disparities

NCT06274359
View directory record Official record
Conditions
Influenza
Interventions
Digital storytelling
Behavioral
Lead sponsor
Denver Health and Hospital Authority
Other
Eligibility
18 Years to 90 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Memory for Flu Facts and Myths and Effects on Vaccine Intentions

NCT00296270
View directory record Official record
Conditions
Influenza Vaccines
Interventions
Memory for truth
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 26 Years
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 23, 2006 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Not applicable Interventional Results available

SCALE-UP Utah II: Community-Academic Partnership to Address COVID-19 Conversational Agent Study

NCT05533359
View directory record Official record
Conditions
COVID-19
Interventions
Text-Messaging (TM), Conversational Agent (CA), Patient Navigation (PN)
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
2,117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 14, 2025 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of GSK's Tdap Vaccine (Boostrix) in Adults Aged 19 to 64 Years

NCT00346073
View directory record Official record
Conditions
Acellular Pertussis, Diphtheria, Tetanus
Interventions
Boostrix™, ADACEL®
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
19 Years to 64 Years
Enrollment
2,337 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
42
States / cities
Huntsville, Alabama • Chandler, Arizona • Mesa, Arizona + 36 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2018 · Synced Jun 10, 2026, 9:37 PM EDT
Completed No phase listed Observational

COVID-19 Antibody Levels After Vaccines

NCT04944134
View directory record Official record
Conditions
Vaccine Preventable Disease
Interventions
COVID-19 Vaccination
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
71 participants
Timeline
2021 – 2022
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 31, 2022 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Dressing Preparations for Smallpox

NCT00063856
View directory record Official record
Conditions
Smallpox
Interventions
Wetvax (APSV)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2004
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 12, 2012 · Synced Jun 10, 2026, 9:37 PM EDT
Active, not recruiting Phase 1 Interventional

iC9-GD2-CAR-VZV-CTLs/Refractory or Metastatic GD2-positive Sarcoma and Neuroblastoma

NCT01953900
View directory record Official record
Conditions
Osteosarcoma, Neuroblastoma
Interventions
GD2 T cells, VZV vaccine, Fludarabine, Cyclophosphamide
Genetic · Biological · Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
Not listed
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2034
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Jun 10, 2026, 9:37 PM EDT
Active, not recruiting Phase 4 Interventional

Impact of Immunosuppression Adjustment on COVID-19 Vaccination Response in Kidney Transplant Recipients

NCT05060991
View directory record Official record
Conditions
COVID-19, Immunosuppression, Vaccine Response Impaired
Interventions
Reduction in antimetabolite immunosuppression
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Immunologic Response to FluMist vs. Flucelvax

NCT03982069
View directory record Official record
Conditions
Influenza, Human, Immune Response
Interventions
FluMist live attenuated influenza vaccine, Flucelvax inactivated influenza vaccine
Biological
Lead sponsor
Richard Zimmerman MD
Other
Eligibility
4 Years to 21 Years
Enrollment
465 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Feasibility of Cocooning Immunization Strategy With Influenza Vaccine

NCT00570037
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza vaccine
Biological
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
544 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
2
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 23, 2013 · Synced Jun 10, 2026, 9:37 PM EDT
Active, not recruiting No phase listed Observational

Evaluation of Immunologic Response Following COVID-19 Vaccination in Children, Adolescents, and Young Adults With Cancer

NCT05228275
View directory record Official record
Conditions
COVID-19 Infection, Hematopoietic and Lymphatic System Neoplasm, Malignant Solid Neoplasm
Interventions
Biospecimen Collection, Survey Administration
Procedure · Other
Lead sponsor
Children's Oncology Group
Network
Eligibility
6 Months to 37 Years
Enrollment
549 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
72
States / cities
Birmingham, Alabama • Kingman, Arizona • Oakland, California + 50 more
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Study to Evaluate the Effectiveness of FluMist Vaccination in a School-Based Intervention Program

NCT00192218
View directory record Official record
Conditions
Influenza
Interventions
FluMist
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
5 Years to 17 Years
Enrollment
3,022 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
2
States / cities
Baltimore, Maryland • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 21, 2008 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Video-Assisted Counseling for HPV Vaccination

NCT03510091
View directory record Official record
Conditions
Human Papillomavirus Infection
Interventions
Counseling
Behavioral
Lead sponsor
Le Bonheur Children's Hospital
Other
Eligibility
9 Years to 99 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 11, 2023 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Culturally Tailored HPV Psychoeducational Multimedia Intervention

NCT06098690
View directory record Official record
Conditions
Health Knowledge, Attitudes, Practice, Vaccine-Preventable Diseases, Intention, Adherence, Patient
Interventions
Culturally Tailored Multimedia Psychoeducational HPV Intervention, General HPV Multimedia Psychoeducational Control Group
Behavioral
Lead sponsor
University of Texas, El Paso
Other
Eligibility
18 Years to 45 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Jun 10, 2026, 9:37 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

HBV Vaccination of Healthy Volunteers to Evaluate the Composition of Germinal Centers

NCT05272735
View directory record Official record
Conditions
Hepatitis B
Interventions
Hepatitis B Vaccine (Recombinant)
Biological
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 50 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Immunization Via Mosquito Bite With Radiation-attenuated Sporozoites

NCT01994525
View directory record Official record
Conditions
Malaria
Interventions
PfRAS, Placebo, Challenge
Biological · Other
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 50 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 16, 2019 · Synced Jun 10, 2026, 9:37 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate Safety and Immunogenicity of Different Priming and Booster Regimens With Adjuvanted H5N8 and/or H5N6 Influenza Vaccine in Adults

NCT05874713
View directory record Official record
Conditions
Influenza, Human, Infections, Respiratory Tract Infections, Virus Diseases, Infection Viral
Interventions
aH5N8c on Day 1, aH5N6c on Day 1, aH5N8c on Day 22, aH5N6c on Day 22, aH5N8c on Day 202
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years and older
Enrollment
480 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
9
States / cities
Cullman, Alabama • Lilburn, Georgia • Norcross, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Jun 10, 2026, 9:37 PM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Immunogenicity of Yellow Fever Vaccine 17D in Adults With Prior 17D Vaccination

NCT05859490
View directory record Official record
Conditions
Yellow Fever, Immunization; Infection
Interventions
17D
Biological
Lead sponsor
Oregon Health and Science University
Other
Eligibility
20 Years to 49 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced Jun 10, 2026, 9:37 PM EDT