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ClinicalTrials.gov public records Last synced Oct 16, 2026, 3:24 AM EDT

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Showing 769–792 of 3,927 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Respiratory Tract Infections (RTI) Clear all
Completed Phase 2 Interventional

Mucosal and Systemic Immunity After Viral Challenge of Healthy Volunteers Vaccinated With Inactivated Influenza Vaccine Via the Intranasal Versus Intramuscular Route

NCT03845231
View directory record Official record
Conditions
Influenza
Interventions
Flucelvax(R), Human Challenge virus
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 10, 2020 · Synced Oct 16, 2026, 3:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Long-Term Experience and Health Effects of COVID-19

NCT04477902
View directory record Official record
Conditions
Covid19, Corona Virus Infection, Quality of Life, Risk Reduction
Interventions
none - observational
Other
Lead sponsor
Altura
Industry
Eligibility
18 Years to 100 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Mission Viejo, California
Source: ClinicalTrials.gov public record
Updated Jun 24, 2021 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Phase 3 Interventional Results available

A Study Comparing Two Fluticasone Furoate Nasal Sprays in the Relief of the Signs and Symptoms of Seasonal Allergic Rhinitis

NCT01279057
View directory record Official record
Conditions
Rhinitis, Allergic, Seasonal
Interventions
Fluticasone furoate 27.5 mcg/actuation nasal spray (Lek Pharmaceuticals), Fluticasone furoate (Veramyst®) 27.5 mcg/actuation nasal spray, Placebo
Drug
Lead sponsor
Sandoz
Industry
Eligibility
12 Years and older
Enrollment
727 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
7
States / cities
Austin, Texas • Kerrville, Texas • New Braunfels, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2021 · Synced Oct 16, 2026, 3:24 AM EDT
Not listed Not applicable Interventional

Incentive Spirometry in Non-critically Ill Hospitalized Patients With Acute Respiratory Failure

NCT02873000
View directory record Official record
Conditions
Pulmonary Complication, Dyspnea, Pneumonia, COPD, CHF, Atelectasis, PE
Interventions
Incentive Spirometry
Behavioral
Lead sponsor
Jewish Hospital, Cincinnati, Ohio
Other
Eligibility
65 Years to 99 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 18, 2017 · Synced Oct 16, 2026, 3:24 AM EDT
Not listed No phase listed Observational

The Evaluation of Hemostasis in Hospitalized COVID-19 Patients

NCT04493307
View directory record Official record
Conditions
COVID-19
Interventions
Phlebotomy
Diagnostic Test
Lead sponsor
LifeBridge Health
Other
Eligibility
3 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 22, 2020 · Synced Oct 16, 2026, 3:24 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

NOWDx Test for the Detection of Antibodies to COVID-19 in Lay Persons

NCT04799392
View directory record Official record
Conditions
COVID-19, SARS-CoV-2, Coronavirus
Interventions
NOWDx COVID-19 Test
Device
Lead sponsor
NOWDiagnostics, Inc.
Industry
Eligibility
2 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
5
States / cities
Fayetteville, Arkansas • Anoka, Minnesota • Nixa, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2021 · Synced Oct 16, 2026, 3:24 AM EDT
Not listed Not applicable Interventional

Using a Community-level Just-in-Time Adaptive Intervention to Address COVID-19 Testing Disparities

NCT05606003
View directory record Official record
Conditions
COVID-19
Interventions
Multi-Level Multi-Component Intervention (MLI), Community Just-In-Time Adaptive Intervention (Community JITAI)
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
1,280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
3
States / cities
Brownsville, Texas • Houston, Texas • Tyler, Texas
Source: ClinicalTrials.gov public record
Updated Nov 4, 2022 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Evaluation of the Safety and Immunogenicity of a SARS-CoV-2 rS Nanoparticle Vaccine With/Without Matrix-M Adjuvant

NCT04368988
View directory record Official record
Conditions
COVID-19
Interventions
SARS-CoV-2 rS - Phase 1, SARS-CoV-2 rS/Matrix-M Adjuvant - Phase 1, Normal saline solution (NSS), Placebo - Phase 1, Normal saline solution (NSS), Placebo - Phase 2, SARS-CoV-2 rS/Matrix-M Adjuvant, Day 0 - Phase 1, Normal saline solution (NSS), Placebo, Day 21 - Phase 1, SARS-CoV-2 rS/Matrix-M Adjuvant - Phase 2
Biological · Other
Lead sponsor
Novavax
Industry
Eligibility
18 Years to 84 Years
Enrollment
1,419 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
8
States / cities
Savannah, Georgia • Meridian, Idaho • Newton, Kansas + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 10, 2023 · Synced Oct 16, 2026, 3:24 AM EDT
Not listed Phase 2Phase 3 Interventional Accepts healthy volunteers

Immuno-bridging and Broadening Study of a Whole, Inactivated COVID-19 Vaccine BBV152 in Healthy Adults

NCT05258669
View directory record Official record
Conditions
COVID-19
Interventions
BBV152
Biological
Lead sponsor
Ocugen
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
10
States / cities
Tempe, Arizona • Miami, Florida • Miami Lakes, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2023 · Synced Oct 16, 2026, 3:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Tuberculosis Volatile Organic Compounds

NCT01379066
View directory record Official record
Conditions
Pulmonary Tuberculosis
Interventions
Not listed
Lead sponsor
Landon Pediatric Foundation
Other
Eligibility
1 Year to 40 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
2
States / cities
Oxnard, California • Ventura, California
Source: ClinicalTrials.gov public record
Updated Aug 13, 2014 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Rapid Turnaround, Home-based Saliva Testing for COVID-19

NCT04568122
View directory record Official record
Conditions
Covid19
Interventions
Saliva test kit
Device
Lead sponsor
Stanford University
Other
Eligibility
2 Years and older
Enrollment
1,277 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
2
States / cities
Pleasanton, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Jan 10, 2024 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Not applicable Interventional

Opioid Use, Storage, and Disposal Among Pediatric Patients After Surgery

NCT03575377
View directory record Official record
Conditions
Tonsillitis, Sleep Disordered Breathing, Hernia, Hydrocele, Hypospadias, Undescended Testicle, Circumcision
Interventions
Disposal Aid
Other
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
1 Year to 17 Years
Enrollment
202 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 21, 2019 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

The Effects of Attenuated Versus Inactivated Flu Vaccine in Twin Sets

NCT03898986
View directory record Official record
Conditions
Influenza
Interventions
Live attenuated influenza vaccine (LAIV4), Inactivated Influenza Vaccine (IIV4)
Biological
Lead sponsor
Stanford University
Other
Eligibility
2 Years to 20 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of Quadrivalent Influenza Vaccine Among Children

NCT01240746
View directory record Official record
Conditions
Influenza
Interventions
Licensed 2010-2011 Trivalent Influenza Vaccine, No Preservative, Investigational Trivalent Influenza Vaccine with alternate B strain, No Preservative, Quadrivalent Influenza Vaccine, No Preservative
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 8 Years
Enrollment
4,363 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
67
States / cities
Dothan, Alabama • Chandler, Arizona • Mesa, Arizona + 55 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2015 · Synced Oct 16, 2026, 3:24 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

A Dose Finding, Efficacy and Safety Study of Ensovibep (MP0420) in Ambulatory Adult Patients With Symptomatic COVID-19

NCT04828161
View directory record Official record
Conditions
COVID-19
Interventions
ensovibep, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
407 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
27
States / cities
Jasper, Alabama • Colton, California • Fullerton, California + 21 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Oct 16, 2026, 3:24 AM EDT
Completed No phase listed Observational

Medical Therapy Versus Sinus Surgery for Chronic Rhinosinusitis: A Prospective, Multi-institutional Study

NCT01255566
View directory record Official record
Conditions
Chronic Rhinosinusitis, Sinusitis
Interventions
Not listed
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
186 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
3
States / cities
Chicago, Illinois • Philadelphia, Pennsylvania • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 24, 2013 · Synced Oct 16, 2026, 3:24 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 18, 2017 · Synced Oct 16, 2026, 3:24 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Understanding Immunity to the Flu Vaccine in COVID-19 Patients

NCT04579588
View directory record Official record
Conditions
Corona Virus Infection, Flu Vaccine, Immunity
Interventions
Flu shot
Biological
Lead sponsor
Stanford University
Other
Eligibility
9 Years to 64 Years
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2028
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Evaluation of Responses to Fluzone® in Infants ≥ 6 Months of Age Who Did or Did Not Receive Fluzone® at 2 Months of Age

NCT00885105
View directory record Official record
Conditions
Influenza
Interventions
Influenza Virus Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 11 Months
Enrollment
242 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
6
States / cities
Little Rock, Arkansas • Marietta, Georgia • Durham, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Phase 4 Interventional Results available

Standard-dose Versus High-dose Flu Vaccine in Solid Organ Transplant.

NCT01808456
View directory record Official record
Conditions
Influenza, Human, Transplantation Infection
Interventions
influenza trivalent inactive vaccine, influenza trivalent inactive vaccine high dose
Biological
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years to 70 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 22, 2022 · Synced Oct 16, 2026, 3:24 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Phase 2 Dose and Formulation Confirmation of Quad-NIV in Older Adults

NCT03658629
View directory record Official record
Conditions
Influenza, Human
Interventions
NanoFlu (Quad-NIV), Matrix-M Adjuvant, Placebo, Fluzone HD, Flublok Quadrivalent, Influenza Vaccine
Biological · Other
Lead sponsor
Novavax
Industry
Eligibility
65 Years and older
Enrollment
1,375 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
14
States / cities
Hollywood, Florida • Savannah, Georgia • Stockbridge, Georgia + 11 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2022 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Phase 3 Interventional Results available

Safety Study of Olopatadine Nasal Spray

NCT00578331
View directory record Official record
Conditions
Perennial Allergic Rhinitis
Interventions
Olopatadine 0.6% nasal spray, Placebo Nasal Spray
Drug
Lead sponsor
Alcon Research
Industry
Eligibility
12 Years and older
Enrollment
890 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Waco, Texas
Source: ClinicalTrials.gov public record
Updated Oct 31, 2017 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Safety of 1 New 6:2 Influenza Virus Reassortant in Adults for the 2016-2017 Season

NCT02743117
View directory record Official record
Conditions
Influenza, Healthy
Interventions
Monovalent 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
2016
U.S. locations
3
States / cities
South Miami, Florida • Stockbridge, Georgia • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 4, 2017 · Synced Oct 16, 2026, 3:24 AM EDT
Completed Not applicable Interventional

Primary Care Clinician Commitments to Choosing Wisely®

NCT02247050
View directory record Official record
Conditions
Health Services Misuse, Physician's Practice Patterns, Guideline Adherence, Unnecessary Procedures, Health Care Costs
Interventions
Commitment invitation
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
21 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
6
States / cities
Ann Arbor, Michigan • Brighton, Michigan • Canton, Michigan + 1 more
Source: ClinicalTrials.gov public record
Updated May 6, 2016 · Synced Oct 16, 2026, 3:24 AM EDT