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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety of HIN1 Monovalent Vaccine (MEDI3414) in Children 2 to 17 Years of Age

NCT00946101
View directory record Official record
Conditions
Influenza
Interventions
MEDI3414 [Influenza A(H1N1) live attenuated, intranasal], Placebo
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
2 Years to 17 Years
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
16
States / cities
Mobile, Alabama • Sacramento, California • San Diego, California + 13 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2011 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Collaborative Efforts to Increase Flu Vaccination

NCT01403649
View directory record Official record
Conditions
Influenza, Collaboration
Interventions
Private/public collaboration to increase flu vaccination, Usual care
Behavioral · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 18 Years
Enrollment
117,175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
27
States / cities
Aurora, Colorado • Brighton, Colorado • Broomfield, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2015 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Safety of 3 New 6:2 Influenza Virus Reassortants in Adults for the 2015-2016 Season

NCT02473510
View directory record Official record
Conditions
Influenza, Healthy
Interventions
Trivalent Influenza Vaccine, Placebo
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
301 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
3
States / cities
South Miami, Florida • Stockbridge, Georgia • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 27, 2016 · Synced Sep 2, 2026, 6:53 AM EDT
Recruiting Phase 1 Interventional

Intralesional Influenza Vaccine for the Treatment of Stage I-IV Melanoma

NCT04697576
View directory record Official record
Conditions
Clinical Stage I Cutaneous Melanoma AJCC v8, Clinical Stage IA Cutaneous Melanoma AJCC v8, Clinical Stage IB Cutaneous Melanoma AJCC v8, Clinical Stage II Cutaneous Melanoma AJCC v8, Clinical Stage IIA Cutaneous Melanoma AJCC v8, Clinical Stage IIB Cutaneous Melanoma AJCC v8, Clinical Stage IIC Cutaneous Melanoma AJCC v8, Clinical Stage IV Cutaneous Melanoma AJCC v8, Metastatic Melanoma
Interventions
Ipilimumab, Nivolumab, Pembrolizumab, Quadrivalent Inactivated Influenza Vaccine, Resection, Nivolumab + Relatlimab
Biological · Procedure
Lead sponsor
Carlo Contreras
Other
Eligibility
18 Years to 99 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 2, 2026, 6:53 AM EDT
Active, not recruiting No phase listed Observational

Vaccine Responses in Cancer

NCT06605625
View directory record Official record
Conditions
Viral Vaccines
Interventions
Influenza vaccination, SARS-CoV-2 vaccine, Zoster Vaccine Recombinant
Biological
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
Not listed
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 27, 2025 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 4 Interventional Results available

A Multicenter Study to Assess Response to Influenza Vaccine in Multiple Sclerosis Participants Treated With Ofatumumab

NCT04667117
View directory record Official record
Conditions
Relapsing Multiple Sclerosis
Interventions
Quadrivalent influenza vaccine, Ofatumumab, iDMT
Biological · Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
3
States / cities
Phoenix, Arizona • Hollywood, Florida • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 8, 2024 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 1 Interventional

A Study of a Live Intranasal Influenza Vaccine in Children With Cancer

NCT00906750
View directory record Official record
Conditions
Cancer
Interventions
FluMist, Inactivated influenza vaccine
Biological
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
2 Years to 21 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 12, 2011 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Quadrivalent Influenza mRNA Vaccine MRT5410 in Adult Participants 18 Years of Age and Older

NCT05624606
View directory record Official record
Conditions
Influenza Immunization
Interventions
Quadrivalent Influenza mRNA Vaccine MRT5410, Quadrivalent Recombinant Influenza vaccine RIV4, Quadrivalent Inactivated Influenza Standard Dose QIV-SD, Quadrivalent Inactivated Influenza High Dose QIV-HD
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
682 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
23
States / cities
Huntington Park, California • Long Beach, California • North Hollywood, California + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2025 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Co-Administration of AS03 Adjuvanted A/H7N9 IIV With IIV4

NCT03318315
View directory record Official record
Conditions
Avian Influenza, Influenza, Influenza Immunisation
Interventions
AS03, Inactivated influenza H7N9 vaccine, Influenza Virus Quadrivalent Inactivated Vaccine, Phosphate Buffered Saline (PBS) diluent
Drug · Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 64 Years
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
4
States / cities
Birmingham, Alabama • Baltimore, Maryland • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Safety, Reactogenicity and Immunogenicity of an H5N1 VLP

NCT00519389
View directory record Official record
Conditions
Pandemic Influenza
Interventions
H5N1 VLP Vaccine, Placebo
Biological
Lead sponsor
Novavax
Industry
Eligibility
18 Years to 40 Years
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jun 20, 2013 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Consistency & Immunogenicity Study of 3 Lots of GSK's Hib Conjugate Vaccine Versus ActHIB & Pentacel in Healthy Infants

NCT01000974
View directory record Official record
Conditions
Haemophilus Influenzae Type b
Interventions
GSK Biologicals' Haemophilus influenzae type b vaccine (GSK 208108), ActHIB™, Pentacel™, Pediarix™, Prevnar 13™, Rotarix™, Engerix™-B, Infanrix™
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Weeks to 12 Weeks
Enrollment
4,003 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
63
States / cities
Dothan, Alabama • Benton, Arkansas • Fayetteville, Arkansas + 59 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2018 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

H5N8 Mix and Match With or Without AS03 or MF59 in Healthy Adults: Immunology

NCT03014310
View directory record Official record
Conditions
Avian Influenza
Interventions
AS03, MF59, Monovalent Influenza A/H5N8 vaccine
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 64 Years
Enrollment
388 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
7
States / cities
Atlanta, Georgia • Baltimore, Maryland • St Louis, Missouri + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 22, 2024 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A(H7N9) VLP Antigen Dose-Ranging Study With Matrix-M1™ Adjuvant

NCT02078674
View directory record Official record
Conditions
Influenza (Pandemic)
Interventions
Monovalent Avian Influenza VLP (H7N9), Matrix-M1™ adjuvant, Placebo
Biological
Lead sponsor
Novavax
Industry
Eligibility
18 Years to 64 Years
Enrollment
610 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
5
States / cities
Walnut Creek, California • Miami, Florida • Meridian, Idaho + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 22, 2016 · Synced Sep 2, 2026, 6:53 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Characterization of Humoral and Cellular Immune Responses Elicited by Influenza Vaccination in Healthy Adults

NCT05108818
View directory record Official record
Conditions
Influenza, Human
Interventions
Seasonal influenza vaccine
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 8, 2026 · Synced Sep 2, 2026, 6:53 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Assessment of Self-Collected Sample Compared to Clinician Collected Sample in COVID-19 and Influenza Program

NCT04681950
View directory record Official record
Conditions
Subjects Possibly Exposed to COVID-19
Interventions
Not listed
Lead sponsor
Biocerna LLC
Industry
Eligibility
Not listed
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Fulton, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 22, 2020 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Recombinant Influenza Vaccine Versus Standard Egg-Based Inactivated Influenza Vaccine in Adults 18-64 Years

NCT05514002
View directory record Official record
Conditions
Influenza, Human
Interventions
Fluzone Quadrivalent, Flublok Quadrivalent
Biological
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years to 64 Years
Enrollment
3,988 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
4
States / cities
Tucson, Arizona • Tallahassee, Florida • Houston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Home Administration of FluMist by Parents/Caregivers

NCT01938170
View directory record Official record
Conditions
Influenza
Interventions
FluMist
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
2 Years to 17 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 25, 2016 · Synced Sep 2, 2026, 6:53 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Effect of Proximity on Flu-Shot Participation

NCT01455753
View directory record Official record
Conditions
Influenza, Human
Interventions
Functional Proximity, Base Proximity
Other
Lead sponsor
National Bureau of Economic Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
1,801 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 17, 2017 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Efficacy Study of Two Influenza Vaccines and Placebo in Healthy Adult Subjects

NCT00630331
View directory record Official record
Conditions
Influenza
Interventions
Cell culture-derived influenza vaccine, Egg-derived influenza virus vaccine, Placebo
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
18 Years to 49 Years
Enrollment
11,404 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
17
States / cities
Denver, Colorado • Pembroke Pines, Florida • South Miami, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated May 23, 2024 · Synced Sep 2, 2026, 6:53 AM EDT
Completed No phase listed Observational

Immunogenicity of Influenza, Pneumococcal and Hepatitis B Vaccines in IBD Patients Treated With Vedolizumab

NCT03056924
View directory record Official record
Conditions
Inflammatory Bowel Diseases
Interventions
Pneumococcal Pneumonia vaccine, Influenza vaccine, Hepatitis B vaccine
Biological
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 29, 2019 · Synced Sep 2, 2026, 6:53 AM EDT
Completed No phase listed Observational

Evaluation of Viral Shedding Patterns and Clinical Outcomes of Influenza Patients

NCT01839760
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
Crucell Holland BV
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 21, 2014 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Not applicable Interventional Results available

Precision Vaccine Promotion in Underserved Populations

NCT05537441
View directory record Official record
Conditions
Influenza, Vaccine Hesitancy
Interventions
Text messaging
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
6 Months and older
Enrollment
228,831 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 30, 2024 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Non-integrated Costs Increase Effectiveness of Incentives

NCT03507231
View directory record Official record
Conditions
Control - No Incentive for Flu Vaccine, Direct Incentive, Indirect Incentive
Interventions
Email Message, Incentive for Vaccination, Incentive for completing a short survey
Behavioral
Lead sponsor
Carnegie Mellon University
Other
Eligibility
18 Years to 100 Years
Enrollment
12,531 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 24, 2018 · Synced Sep 2, 2026, 6:53 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Clinical Study to Evaluate the Immunogenicity and Safety of an Adjuvanted Quadrivalent Influenza Vaccine Compared With a Licensed Quadrivalent Vaccine in Adults 50 to 64 Years of Age

NCT05044195
View directory record Official record
Conditions
Influenza, Human
Interventions
aQIV, Comparator QIV
Biological
Lead sponsor
Seqirus
Industry
Eligibility
50 Years to 64 Years
Enrollment
2,044 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
12
States / cities
Mobile, Alabama • Tempe, Arizona • Atlantis, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced Sep 2, 2026, 6:53 AM EDT