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ClinicalTrials.gov public records Last synced May 22, 2026, 5:47 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Influenza Immunization Clear all
Completed Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy
Interventions
INO-3605, INO-3609, INO-3401, INO-3605 AND INO-3609, INO-3510, Seasonal Influenza vaccine
Biological
Lead sponsor
Inovio Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
3
States / cities
Miami, Florida • Overland Park, Kansas • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 2, 2014 · Synced May 22, 2026, 5:47 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Influenza
Interventions
Influenzae vaccine
Drug
Lead sponsor
Akron Children's Hospital
Other
Eligibility
18 Years and older
Enrollment
336 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Akron, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 22, 2013 · Synced May 22, 2026, 5:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Vaccine Refusal
Interventions
educational intervention
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
Not listed
Enrollment
510 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 11, 2024 · Synced May 22, 2026, 5:47 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Influenza Vaccination, Behavior And Behavior Mechanism
Interventions
Experimental
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
Not listed
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced May 22, 2026, 5:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Influenza
Interventions
Vero cell-derived trivalent influenza vaccine manufactured with the modified manufacturing process (VCIV modified), VCIV manufactured with the current manufacturing process (VCIV current), Fluzone®, licensed trivalent influenza vaccine (TIV)
Biological
Lead sponsor
Alachua Government Services, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,928 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
20
States / cities
Chandler, Arizona • Anaheim, California • Paramount, California + 17 more
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced May 22, 2026, 5:47 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Influenza
Interventions
Licensed seasonal influenza vaccine
Biological
Lead sponsor
Altimmune, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 25, 2019 · Synced May 22, 2026, 5:47 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Cardiovascular Diseases, Atrial Fibrillation, Abnormal Heart Rhythms, Cardiac Arrest, Heart Attack, Myocardial Infarction, Coronary Heart Disease, Heart Failure, Stroke, Cerebrovascular Accident
Interventions
Targeted digital intervention
Other
Lead sponsor
Evidation Health
Industry
Eligibility
18 Years and older
Enrollment
49,138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Mateo, California
Source: ClinicalTrials.gov public record
Updated Jun 20, 2022 · Synced May 22, 2026, 5:47 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Influenza
Interventions
Cell culture-derived influenza subunit vaccine (cTIV), Egg derived influenza subunit vaccine (eTIV)
Biological
Lead sponsor
Novartis
Industry
Eligibility
3 Years to 17 Years
Enrollment
3,604 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
16
States / cities
Fayetteville, Arkansas • Downey, California • Bardstown, Kentucky + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 22, 2015 · Synced May 22, 2026, 5:47 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Influenza Vaccination, Health Promotion, Health Behavior, Risk Reduction
Interventions
Letter, Patient portal, SMS
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
43,225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 11, 2022 · Synced May 22, 2026, 5:47 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Vaccine Preventable Diseases, Meningococcal Disease, Human Papillomavirus, Pertussis, Influenza
Interventions
Point-of-Care Prompt
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
11 Years to 18 Years
Enrollment
7,040 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
22
States / cities
Little Rock, Arkansas • Wilmington, Delaware • Gainesville, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated May 1, 2017 · Synced May 22, 2026, 5:47 AM EDT
Terminated Not applicable Interventional Results available
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Text Message R/R with Direct Appointment Schedule Link, Text Message R/R without Direct Appointment Schedule Link, Text Pre-Appointment Reminder, Portal Message R/R with Direct Appointment Schedule Link, Portal Message R/R without Direct Appointment Schedule Link, Portal Pre-Appointment Reminder
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months and older
Enrollment
239,567 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2025 · Synced May 22, 2026, 5:47 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Influenza Immunisation, Healthy Volunteers
Interventions
Quadrivalent RIV with H3 strain 1, Quadrivalent RIV with H3 strain 1 and adjuvant, Quadrivalent RIV with H3 strain 2, Quadrivalent RIV with H3 strain 2 and adjuvant, Quadrivalent RIV with 2018-2019 NH H3 strain, Quadrivalent RIV with 2018-2019 NH H3 strain and adjuvant
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
5
States / cities
San Diego, California • Melbourne, Florida • Orlando, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 16, 2025 · Synced May 22, 2026, 5:47 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Influenza
Interventions
Reminder
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
139,503 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 29, 2024 · Synced May 22, 2026, 5:47 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Influenza
Interventions
H5N1 vaccine plus AS03 adjuvant, H5N1 vaccine without adjuvant
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 25, 2019 · Synced May 22, 2026, 5:47 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Rheumatologic Disorder, Inflammatory Bowel Diseases, Immune Complex Diseases
Interventions
Influenza vaccine
Biological
Lead sponsor
Stony Brook University
Other
Eligibility
3 Years to 22 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
East Setauket, New York
Source: ClinicalTrials.gov public record
Updated Feb 24, 2022 · Synced May 22, 2026, 5:47 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Influenza, Infant, Premature
Interventions
Trivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
University of Rochester
Other
Eligibility
6 Months to 17 Months
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
5
States / cities
Miami, Florida • Buffalo, New York • Rochester, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 16, 2015 · Synced May 22, 2026, 5:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Herpes Zoster
Interventions
HZ/su, Flu D-QIV, mRNA-1273
Biological · Combination Product
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
2,013 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
46
States / cities
Tempe, Arizona • Oxnard, California • San Diego, California + 40 more
Source: ClinicalTrials.gov public record
Updated Nov 12, 2023 · Synced May 22, 2026, 5:47 AM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Human Influenza
Interventions
Recombinant Influenza Vaccine, Inactivated Influenza Vaccine
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
18 Years and older
Enrollment
254,648 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Oct 11, 2017 · Synced May 22, 2026, 5:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Question (Q), Messaging (M)
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
776 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
8
States / cities
San Francisco, California • Durham, North Carolina • Philadelphia, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated May 30, 2024 · Synced May 22, 2026, 5:47 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Influenza
Interventions
FluMist
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
21 Years to 49 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 26, 2010 · Synced May 22, 2026, 5:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Adolescent HPV Vaccine, Adolescent Influenza Vaccine
Interventions
4 Pillars Toolkit
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
11 Years to 17 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 27, 2018 · Synced May 22, 2026, 5:47 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Influenza
Interventions
Existing Influenza Vaccination Practices, Standardized inpatient influenza vaccination program
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 99 Years
Enrollment
22,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
2
States / cities
Chicago, Illinois • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced May 22, 2026, 5:47 AM EDT
Active, not recruiting Not applicable Interventional
View directory record Official record
Conditions
Influenza, Vaccination
Interventions
Behavioral economics framed test messaging
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
6 Months and older
Enrollment
100,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced May 22, 2026, 5:47 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers
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 May 22, 2026, 5:47 AM EDT