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ClinicalTrials.gov public records Last synced Oct 3, 2026, 10:57 AM EDT

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Showing 25–48 of 3,394 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Respiratory Viral Infections Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

COVID-19 Treatment Cascade Optimization Study

NCT05305443
View directory record Official record
Conditions
COVID-19
Interventions
Navigation Services, Brief Counseling, Critical Dialogue, Referral and Digital Brochure
Behavioral
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
18 Years and older
Enrollment
554 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
East Saint Louis, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 26, 2024 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Not applicable Interventional

UNITE Study (UMN-SW) for COVID-19

NCT04854798
View directory record Official record
Conditions
Covid19, Cytokine Storm, Inflammation
Interventions
Splenic Ultrasound
Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
Burnsville, Minnesota • Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated May 3, 2024 · Synced Oct 3, 2026, 10:57 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Researchers At UC San Diego Are Learning About the Benefits of Human Milk and How It Influences Infant and Child Health

NCT05553743
View directory record Official record
Conditions
Breastfeeding, COVID-19 Infection, COVID-19 Vaccine, Remdesivir, Antibiotics
Interventions
COVID-19 Exposure, Antibiotic
Biological · Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2040
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 31, 2025 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Open-Label Study of H5 Vaccine in Participants of Protocol 04-077

NCT00402649
View directory record Official record
Conditions
Influenza
Interventions
Inactivated Influenza A/H5N1 Vaccine (sanofi pasteur)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Years to 10 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
3
States / cities
Torrance, California • Baltimore, Maryland • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 13, 2011 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Results available

The Prevalence of Local Immunoglobulin E (IgE) Elevation and Its Effect on Intranasal Capsaicin Therapy in the Non-allergic Rhinitis Population

NCT05093478
View directory record Official record
Conditions
Non-allergic Rhinitis
Interventions
Intranasal capsaicin, topical lidocaine
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 20, 2024 · Synced Oct 3, 2026, 10:57 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity Trial of PepGNP-COVID19 Vaccine in Adults

NCT07183709
View directory record Official record
Conditions
COVID-19
Interventions
PepGNP-COVID19, Sterile Water for Injection
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
3
States / cities
Birmingham, Alabama • Washington D.C., District of Columbia • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 15, 2026 · Synced Oct 3, 2026, 10:57 AM EDT
Completed No phase listed Observational Results available

Validation of a Rapid Quantitative Test for Loss of Smell in COVID-19 Subjects

NCT04431908
View directory record Official record
Conditions
COVID-19
Interventions
olfactory device
Device
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
1,320 participants
Timeline
2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 2, 2021 · Synced Oct 3, 2026, 10:57 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Study of the Efficacy and Safety of Intravenous Pamrevlumab, in Hospitalized Participants With Acute COVID-19 Disease

NCT04432298
View directory record Official record
Conditions
COVID-19
Interventions
Pamrevlumab, Placebo
Drug
Lead sponsor
Kyntra Bio
Industry
Eligibility
40 Years to 85 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
4
States / cities
Detroit, Michigan • Greensboro, North Carolina • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 18, 2022 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Study of Intranasal PIV5 COVID-19 Vaccine Expressing SARS-CoV-2 Spike Protein in Healthy Adults and Adolescents

NCT04954287
View directory record Official record
Conditions
Covid19
Interventions
CVXGA1 low dose, CVXGA1 high dose
Biological
Lead sponsor
CyanVac LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
4
States / cities
Bardstown, Kentucky • Rochester, New York • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 7, 2024 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Bacterial Composition and Immune Responses in the Nose and Oropharynx During Influenza Infection

NCT02597647
View directory record Official record
Conditions
Influenza
Interventions
LAIV, Saline
Biological · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 64 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

PROmotion of COVID-19 BOOSTer VA(X)Ccination in the Emergency Department - PROBOOSTVAXED

NCT06156215
View directory record Official record
Conditions
COVID-19
Interventions
Vaccine Messaging, Vaccine Acceptance Question
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
919 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
7
States / cities
San Francisco, California • Durham, North Carolina • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 12, 2025 · Synced Oct 3, 2026, 10:57 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Phase 3 Study of Revaccination in Subsequent Pregnancies With Bivalent RSV Vaccine and Duration of Protection of a Single Dose

NCT06866405
View directory record Official record
Conditions
RSV Infection
Interventions
RSVpreF, Placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
0 Years and older
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
80
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 29 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 3, 2026, 10:57 AM EDT
Withdrawn Phase 1 Interventional

Study to Evaluate Safety, Tolerability, Efficacy and Pharmacokinetics of ASC10 in Mild to Moderate COVID-19 Patients

NCT05596045
View directory record Official record
Conditions
SARS CoV 2 Infection
Interventions
ASC10, Placebo
Drug
Lead sponsor
Ascletis Pharmaceuticals Co., Ltd.
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
Anniston, Alabama • Hialeah, Florida
Source: ClinicalTrials.gov public record
Updated Nov 1, 2024 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

H7N9 Mix and Match With MF59 in Healthy Elderly Persons

NCT02213354
View directory record Official record
Conditions
Avian Influenza
Interventions
MF59, Influenza Virus Vaccine, Monovalent A/H7N9 A/Shanghai/2/2013
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years to 99 Years
Enrollment
479 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
10
States / cities
Decatur, Georgia • Iowa City, Iowa • Baltimore, Maryland + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2017 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 2 Interventional

Evaluating the Efficacy of Convalescent Plasma in Symptomatic Outpatients Infected With COVID-19

NCT04438057
View directory record Official record
Conditions
COVID-19
Interventions
CCP
Biological
Lead sponsor
Metro Infectious Disease Consultants
Other
Eligibility
18 Years and older
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Burr Ridge, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 6, 2022 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Evaluating the Infectivity, Safety, and Immunogenicity of a Respiratory Syncytial Virus Vaccine (RSV 6120/∆NS2/1030s) in RSV-Seropositive Children and RSV-Seronegative Infants and Children

NCT03387137
View directory record Official record
Conditions
RSV Infection
Interventions
RSV 6120/∆NS2/1030s, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 60 Months
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 11, 2024 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immune Response of mRNA-1345, a Vaccine Targeting Respiratory Syncytial Virus (RSV), When Co-administered With a Fluzone HD, in Adults ≥65 Years of Age

NCT06060457
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
Placebo, mRNA-1345, Fluzone HD
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
65 Years and older
Enrollment
1,900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
34
States / cities
Scottsdale, Arizona • Dublin, California • Riverside, California + 29 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 4 Interventional Results available

Do Angiotensin Receptor Blockers Mitigate Progression to Acute Respiratory Distress Syndrome With SARS-CoV-2 Infection

NCT04340557
View directory record Official record
Conditions
SARS-CoV Infection
Interventions
Losartan
Drug
Lead sponsor
Sharp HealthCare
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
3
States / cities
La Mesa, California • San Diego, California
Source: ClinicalTrials.gov public record
Updated May 26, 2021 · Synced Oct 3, 2026, 10:57 AM EDT
Recruiting Not applicable Interventional

Water-based Activity to Enhance Recovery in Long COVID-19

NCT06142253
View directory record Official record
Conditions
Long COVID
Interventions
WATER+CT, Usual Care
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 89 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jun 18, 2026 · Synced Oct 3, 2026, 10:57 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

A Study to Test BI 767551 in People With Mild to Moderate Symptoms of COVID-19

NCT04822701
View directory record Official record
Conditions
COVID-19
Interventions
BI 767551 intravenous, BI 767551 inhaled, Placebo intravenous, Placebo inhaled
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
4
States / cities
Miami Springs, Florida • Amarillo, Texas • Houston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2022 · Synced Oct 3, 2026, 10:57 AM EDT
Terminated Not applicable Interventional Results available

Pediatric Helmet CPAP Pilot Study

NCT04764929
View directory record Official record
Conditions
Bronchiolitis, Viral, Pneumonia, Viral, Pneumonia, Bacterial
Interventions
Helmet CPAP
Device
Lead sponsor
Columbia University
Other
Eligibility
1 Month to 5 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 29, 2024 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Bird Flu Virus Vaccine (H5N1) in Healthy Adults

NCT00347672
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H5N1 (6-2) AA ca Recombinant (A/VietNam/1203/2004 x A/AnnArbor/6/60/ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 21, 2008 · Synced Oct 3, 2026, 10:57 AM EDT
Completed Not applicable Interventional Results available

Test to Stay in School: COVID-19 Testing Following Exposure in School Communities

NCT05052580
View directory record Official record
Conditions
Covid19
Interventions
COVID-19 Testing
Other
Lead sponsor
Duke University
Other
Eligibility
Not listed
Enrollment
4,733 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 27, 2023 · Synced Oct 3, 2026, 10:57 AM EDT
Withdrawn Phase 2 Interventional

Treatment of Lung Injury From COVID-19 Infection With Intravenous Sodium Nitrite

NCT04401527
View directory record Official record
Conditions
COVID-19, Acute Respiratory Distress Syndrome, Acute Respiratory Failure
Interventions
Sodium Nitrite, Normal Saline
Drug
Lead sponsor
Hope Pharmaceuticals
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
Tampa, Florida • Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated Sep 16, 2020 · Synced Oct 3, 2026, 10:57 AM EDT