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ClinicalTrials.gov public records Last synced Oct 4, 2026, 1:30 AM EDT

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Showing 49–72 of 157 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Upper Respiratory Tract Infection Clear all
Completed No phase listed Observational Accepts healthy volunteers

Allele-specific Expression of a Bitter Taste Receptor

NCT02766959
View directory record Official record
Conditions
Rhinosinusitis
Interventions
Observational study
Other
Lead sponsor
Monell Chemical Senses Center
Other
Eligibility
21 Years to 50 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
3
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 18, 2018 · Synced Oct 4, 2026, 1:30 AM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study of BLB-201 RSV Vaccine in Infants and Children

NCT05655182
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
PIV5-vectored RSV Vaccine (BLB-201) Low Dose, PIV5-vectored RSV Vaccine (BLB-201) High Dose, Placebo
Biological · Drug
Lead sponsor
Blue Lake Biotechnology Inc.
Industry
Eligibility
6 Months to 5 Years
Enrollment
137 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
18
States / cities
La Mesa, California • Modesto, California • San Diego, California + 14 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Use of a Behavioral Economic Intervention to Reduce Antibiotic Prescription for Upper Respiratory Infections

NCT03464279
View directory record Official record
Conditions
Antibiotics, Upper Respiratory Infections, Safety-Net Hospitals, Behavioral Economics, Choosing Wisely
Interventions
Nudge using Behavioral Economic Interventions, Standard Practices to Reduce Health System Antibiotic Prescription
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
2,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 2, 2018 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Phase 3 Interventional

Placebo and Active Controlled Study to Assess Efficacy and Tolerability of Aspirin Plus Pseudoephedrine

NCT01062360
View directory record Official record
Conditions
Common Cold, Pharyngitis
Interventions
Acetylsalicylic Acid (Aspirin Complex, BAYE4465) + Pseudoephedrine, Acetylsalicylic Acid (Aspirin, BAYE4465), Pseudoephedrine, Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,016 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 1, 2017 · Synced Oct 4, 2026, 1:30 AM EDT
Withdrawn Not applicable Interventional

Comparison of Supportive Therapies for Symptom Relief From Pediatric Upper Respiratory Infections (URIs)

NCT01814293
View directory record Official record
Conditions
Acute Upper Respiratory Infection, Signs and Symptoms
Interventions
Handheld humidifier
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
Up to 18 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 15, 2015 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Echinacea, Propolis and Vitamin C for URI Prevention in Preschoolers

NCT00231218
View directory record Official record
Conditions
Common Cold, Gastroenteritis
Interventions
dietary supplement--echinacea, propolis, and vitamin c
Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
3 Years to 6 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 14, 2006 · Synced Oct 4, 2026, 1:30 AM EDT
Terminated Phase 3 Interventional Results available

A Study of Rilematovir in Infants and Children and Subsequently in Neonates Hospitalized With Acute Respiratory Tract Infection Due to Respiratory Syncytial Virus (RSV)

NCT04583280
View directory record Official record
Conditions
Respiratory Tract Infections
Interventions
Rilematovir, Rilematovir X mg/kg, Placebo
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
1 Day to 5 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
5
States / cities
Orlando, Florida • Jackson, Mississippi • The Bronx, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Oct 4, 2026, 1:30 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Study of ALVR106 in Patients With Respiratory Viral Infections After Hematopoietic Cell and Solid Organ Transplant

NCT04933968
View directory record Official record
Conditions
Respiratory Tract Viral Infections, Human Metapneumovirus (hMPV) Infection, Parainfluenza (PIV) Infection, Respiratory Syncytial Viral (RSV) Infection, Influenza Infection
Interventions
ALVR106, Placebo
Biological
Lead sponsor
AlloVir
Industry
Eligibility
17 Years to 75 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
21
States / cities
Scottsdale, Arizona • Duarte, California • Gainesville, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 6, 2024 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Challenge Infection of Healthy Adult Volunteers With RSV A2

NCT03388645
View directory record Official record
Conditions
Upper Respiratory Tract Infections
Interventions
10^6.3 PFU of RSV A2, 10^7 PFU of RSV A2
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 3, 2020 · Synced Oct 4, 2026, 1:30 AM EDT
Not yet recruiting Not applicable Interventional

Enhanced Telemedicine in Primary Care for Acute Respiratory Tract Infections Study

NCT07845526
View directory record Official record
Conditions
Acute Respiratory Tract Infection, Ear Infection, Throat Infection, Acute Respiratory Tract Infections, Common Cold
Interventions
Tele-Otoscope Enabled Primary Care, eBook-supported primary care
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
6 Months to 24 Months
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Not applicable Interventional

The RAPID Trial: Assessing Point-of-care Influenza and Other Respiratory Virus Diagnostics

NCT03756753
View directory record Official record
Conditions
Respiratory Pathogens, Upper Respiratory Tract Illness, Lower Respiratory Tract Illness, Acute Respiratory Infection
Interventions
Results available to provider
Diagnostic Test
Lead sponsor
University of Colorado, Denver
Other
Eligibility
1 Month to 18 Years
Enrollment
913 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 9, 2021 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Efficacy of the 2023-2024 Updated COVID-19 Vaccines Against COVID-19 Infection

NCT06065176
View directory record Official record
Conditions
COVID-19, Vaccine-Preventable Diseases, SARS CoV 2 Infection, Upper Respiratory Tract Infection, Upper Respiratory Disease
Interventions
Novavax COVID-19 vaccine (2023-2024 formula XBB containing), Pfizer COVID-19 mRNA vaccine (2023-2024 formula XBB containing)
Biological
Lead sponsor
Sarang K. Yoon, DO, MOH
Other
Eligibility
18 Years and older
Enrollment
1,188 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Immunologic Effects of Echinacea

NCT00860795
View directory record Official record
Conditions
Upper Respiratory Tract Infections
Interventions
Echinacea purpurea, placebo
Biological · Drug
Lead sponsor
University of Washington
Other
Eligibility
21 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Kenmore, Washington
Source: ClinicalTrials.gov public record
Updated May 1, 2018 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Phase 2 Interventional Results available

Presatovir in Hematopoietic Cell Transplant Recipients With Respiratory Syncytial Virus (RSV) Infection of the Lower Respiratory Tract

NCT02254421
View directory record Official record
Conditions
Respiratory Syncytial Virus Infection
Interventions
Presatovir, Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
11
States / cities
Duarte, California • Chicago, Illinois • Baltimore, Maryland + 8 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2018 · Synced Oct 4, 2026, 1:30 AM EDT
Completed No phase listed Observational

Impact of Respiratory Pathogens in Infants

NCT01789268
View directory record Official record
Conditions
Respiratory Tract Infection
Interventions
Respiratory Inductive Plethysmography
Device
Lead sponsor
University of Rochester
Other
Eligibility
0 Days to 3 Years
Enrollment
267 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Mar 2, 2022 · Synced Oct 4, 2026, 1:30 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Characterizing the Human Airway Immune Response to FluMist Vaccination

NCT07177417
View directory record Official record
Conditions
Healthy Young Adults, Influenza Vaccines, Influenza Vaccine Response
Interventions
FluMist, inactivated influenza vaccine, bronchoscopy
Biological · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 40 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study to Evaluate the Immune Response and Safety of an Influenza Vaccine in Adults 18 Years of Age and Above

NCT07204964
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu mRNA (Formulation B1), Flu mRNA (Formulation B3), Flu mRNA(Formulation A), Comparator 1, Comparator 2, Comparator 3
Biological · Combination Product
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
971 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
15
States / cities
Guntersville, Alabama • Canoga Park, California • Walnut Creek, California + 12 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2026 · Synced Oct 4, 2026, 1:30 AM EDT
Terminated Phase 3 Interventional

Ribavirin to Prevent RSV Pneumonia in Bone Marrow Transplant Patients

NCT00031473
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
Virazole (Ribavirin) Inhalation Solution
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
5 Years to 60 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2003
U.S. locations
11
States / cities
Birmingham, Alabama • Duarte, California • San Francisco, California + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 4, 2026, 1:30 AM EDT
Terminated Not applicable Interventional Results available

Placebo-Controlled Trial of Antibiotic Therapy in Adults With Suspect Lower Respiratory Tract Infection (LRTI) and a Procalcitonin Level

NCT03341273
View directory record Official record
Conditions
Lower Respiratory Tract Infection
Interventions
Azithromycin, Placebo, VIDAS B.R.A.H.M.S Procalcitonin Test (PCT)
Drug · Other · Device
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
514 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
5
States / cities
Atlanta, Georgia • Decatur, Georgia • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2023 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Natural Modulators of Immune Function and Mood

NCT05508529
View directory record Official record
Conditions
Stress
Interventions
Chaga Mushroom, Algae Extract, Black Cumin Seed Oil, Black Cumin Seed Oil + Astaxanthin, Black Cumin Seed Oil + Omega 3, Placebo
Dietary Supplement
Lead sponsor
3 Waves Wellness
Industry
Eligibility
18 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Plymouth, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 19, 2022 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Human Parainfluenza Virus Vaccine (rHPIV3cp45) in Healthy Infants

NCT00308412
View directory record Official record
Conditions
Paramyxoviridae Infections, Virus Diseases
Interventions
rHPIV3cp45, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 36 Months
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 16, 2010 · Synced Oct 4, 2026, 1:30 AM EDT
Withdrawn Phase 3 Interventional

Azithromycin Plus Hydroxychloroquine for COVID-19 Infection

NCT05026801
View directory record Official record
Conditions
Respiratory Tract Infection Viral
Interventions
Azithromycin plus hydroxychloroquine
Drug
Lead sponsor
Iterum Therapeutics, International Limited
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Waterbury, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Safety and Efficacy of Mucinex and IR Guaifenesin the Treatment of Symptoms of Acute Upper Respiratory Tract Infections

NCT01537081
View directory record Official record
Conditions
Acute Upper Respiratory Tract Infection
Interventions
Mucinex, Immediate-release Guaifenesin, Placebo
Drug
Lead sponsor
Reckitt Benckiser LLC
Industry
Eligibility
12 Years and older
Enrollment
2,810 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
43
States / cities
Hoover, Alabama • Bell Gardens, California • Harbor City, California + 38 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2013 · Synced Oct 4, 2026, 1:30 AM EDT
Completed Not applicable Interventional Results available

Procalcitonin Antibiotic Consensus Trial (ProACT)

NCT02130986
View directory record Official record
Conditions
Lower Respiratory Tract Infection (LRTI)
Interventions
Procalcitonin level, Results of procalcitonin (PCT) level to treating clinician, Provide procalcitonin guideline to treating clinician, Telephone Visit
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
1,664 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
13
States / cities
Birmingham, Alabama • Phoenix, Arizona • Orange, California + 8 more
Source: ClinicalTrials.gov public record
Updated Jan 15, 2019 · Synced Oct 4, 2026, 1:30 AM EDT