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Showing 1–24 of 54 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: LRTI Clear all
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 27, 2023 · Synced Jul 22, 2026, 2:32 PM EDT
Completed No phase listed Observational

An Epidemiological Study to Evaluate the RSV-Associated Lower Respiratory Track in Infections in Infants

NCT00369759
View directory record Official record
Conditions
Respiratory Infections, Bronchiolitis, Pneumonia, Apnea
Interventions
Emergency Dept. Subjects with LRI or Apnea
Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
1 Day to 12 Months
Enrollment
2,048 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
38
States / cities
Phoenix, Arizona • Sylmar, California • Denver, Colorado + 29 more
Source: ClinicalTrials.gov public record
Updated Mar 16, 2009 · Synced Jul 22, 2026, 2:32 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Efficacy of MEDI8897 for the Prevention of Medically Attended Lower Respiratory Tract Infection Due to Respiratory Syncytial Virus in Healthy Late Preterm and Term Infants (MELODY)

NCT03979313
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
MEDI8897, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
0 Years to 1 Year
Enrollment
3,012 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
66
States / cities
Birmingham, Alabama • Fort Defiance, Arizona • Fayetteville, Arkansas + 59 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Jul 22, 2026, 2:32 PM EDT
Terminated Not applicable Interventional

MiniTightRope Suspensionplasty Compared With LRTI for the Treatment of Basilar Thumb Arthritis

NCT02591368
View directory record Official record
Conditions
Arthritis, Joint Diseases
Interventions
Ligament reconstruction tendon interposition, Suspensionplasty with one-suture construct, Suspensionplasty with two-suture construct
Procedure
Lead sponsor
Orlando Health, Inc.
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Aug 4, 2025 · Synced Jul 22, 2026, 2:32 PM EDT
Completed No phase listed Observational

Diagnosing Respiratory Disease in Children Using Cough Sounds

NCT02973282
View directory record Official record
Conditions
Pneumonia, Bronchiolitis, Asthma, Croup, Upper Respiratory Tract Infection, Lower Respiratory Tract Infection, Reactive Airway Disease
Interventions
Recording of Infants and Children's Cough Sounds
Other
Lead sponsor
ResApp Health Limited
Industry
Eligibility
29 Days to 12 Years
Enrollment
1,245 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
3
States / cities
Boston, Massachusetts • Cleveland, Ohio • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 4, 2018 · Synced Jul 22, 2026, 2:32 PM EDT
Completed Phase 2 Interventional Results available

Evaluate the Safety and Tolerability, for Nirsevimab in Immunocompromised Children

NCT04484935
View directory record Official record
Conditions
RSV Infection
Interventions
Nirsevimab
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
0 Years to 2 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
7
States / cities
Los Angeles, California • Tampa, Florida • Syracuse, New York + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2023 · Synced Jul 22, 2026, 2:32 PM EDT
Active, not recruiting No phase listed Observational

A Study to Learn How Effective is PCV20 to Help Stop Adults Who Have a Higher Chance of Getting Pneumonia

NCT07251465
View directory record Official record
Conditions
Pneumonia
Interventions
Receipt of PCV20
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
846,279 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Jul 22, 2026, 2:32 PM EDT
Recruiting Phase 3 Interventional

Phase III DAS181 Lower Tract PIV Infection in Immunocompromised Subjects (Substudy: DAS181 for COVID-19): RCT Study

NCT03808922
View directory record Official record
Conditions
Lower Respiratory Tract Infection, Parainfluenza, Immunocompromised, COVID-19
Interventions
DAS181, Placebo, DAS181 COVID-19, DAS181 OL
Drug
Lead sponsor
Ansun Biopharma, Inc.
Industry
Eligibility
Not listed
Enrollment
274 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2028
U.S. locations
23
States / cities
Duarte, California • Sacramento, California • Chicago, Illinois + 17 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Jul 22, 2026, 2:32 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Prospective, Epidemiological Study to Assess the Disease Burden of Respiratory Syncytial Virus Associated, Suspected Lower Respiratory Tract Infections in Newborns, From 0 to 2 Years of Age and Risk of Development of Wheeze and Asthma From 0 to 6 Years of Age

NCT01995175
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
Nasal swab sampling, Blood sampling, Diary cards
Procedure · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
Up to 6 Years
Enrollment
2,409 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2021
U.S. locations
9
States / cities
Oakland, California • Sacramento, California • Santa Clara, California + 5 more
Source: ClinicalTrials.gov public record
Updated Nov 28, 2022 · Synced Jul 22, 2026, 2:32 PM EDT
Enrolling by invitation No phase listed Observational

Study on Home Obstructive Respiratory Exacerbations

NCT06544928
View directory record Official record
Conditions
COPD Exacerbation, COPD (Chronic Obstructive Pulmonary Disease) With Acute Lower Respiratory Infection, COPD Exacerbation Acute, COPD
Interventions
RESP™ Biosensor
Device
Lead sponsor
Strados Labs, Inc.
Industry
Eligibility
40 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 19, 2026 · Synced Jul 22, 2026, 2:32 PM EDT
Not listed Not applicable Interventional

Safety and Effectiveness of Cartiva Implant in the Treatment of First CMC Joint Osteoarthritis Compared to LRTI (GRIP 2)

NCT03247439
View directory record Official record
Conditions
Osteoarthritis
Interventions
Cartiva
Device
Lead sponsor
Cartiva, Inc.
Industry
Eligibility
22 Years and older
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
5
States / cities
San Diego, California • Atlanta, Georgia • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 2, 2020 · Synced Jul 22, 2026, 2:32 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Grasshopper: a Novel Clinical Dashboard for Radiologists

NCT06785246
View directory record Official record
Conditions
Chest Infection, Pulmonary Edema - Acute
Interventions
Grasshopper dashboard
Other
Lead sponsor
Kaiser Permanente
Other
Eligibility
Not listed
Enrollment
100,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Pleasanton, California
Source: ClinicalTrials.gov public record
Updated Jan 20, 2025 · Synced Jul 22, 2026, 2:32 PM 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
15
States / cities
La Mesa, California • Modesto, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jul 22, 2026, 2:32 PM EDT
Completed Phase 2Phase 3 Interventional Results available

A Study to Evaluate the Safety of MEDI8897 for the Prevention of Medically Attended Respiratory Syncytial Virus(RSV) Lower Respiratory Track Infection (LRTI) in High-risk Children

NCT03959488
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
MEDI8897, Palivizumab
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
0 Years to 1 Year
Enrollment
925 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
30
States / cities
Anaheim, California • Long Beach, California • Los Angeles, California + 27 more
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced Jul 22, 2026, 2:32 PM EDT
Completed No phase listed Observational

Study to Evaluate the Incidence of Hospitalizations and Respiratory Tract Infections in Premature Infants

NCT00384462
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
Not listed
Lead sponsor
MedImmune LLC
Industry
Eligibility
1 Month to 6 Months
Enrollment
346 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
59
States / cities
Birmingham, Alabama • Benton, Arkansas • Jonesboro, Arkansas + 50 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2009 · Synced Jul 22, 2026, 2:32 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Efficacy of MEDI8897 for the Prevention of Medically Attended RSV LRTI in Healthy Preterm Infants.

NCT02878330
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
MEDI8897, Placebo
Drug
Lead sponsor
MedImmune LLC
Industry
Eligibility
Up to 365 Days
Enrollment
1,453 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
60
States / cities
Birmingham, Alabama • Anaheim, California • Downey, California + 53 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2019 · Synced Jul 22, 2026, 2:32 PM EDT
Completed Not applicable Interventional

Comparative Effectiveness of Readmission Reduction Interventions for Individuals with Sepsis or Pneumonia

NCT04829188
View directory record Official record
Conditions
Sepsis, Pneumonia, Lower Resp Tract Infection, Covid19
Interventions
Structured Telephone Support (STS), Low-intensity Remote Patient Monitoring (RPM-Low), High-intensity Remote Patient Monitoring (RPM-High), Standard Response Team, Enhanced Response Team
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
21 Years and older
Enrollment
1,288 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 15, 2025 · Synced Jul 22, 2026, 2:32 PM EDT
Not listed No phase listed Observational

Pathogen Identification in Pediatric Hematopoietic Stem Cell Transplant Patients With Suspected Lower Respiratory Tract Infection

NCT02926612
View directory record Official record
Conditions
Lower Respiratory Tract Infections
Interventions
Next Generation Genomic Sequencing
Other
Lead sponsor
Pediatric Blood and Marrow Transplant Foundation, Inc.
Other
Eligibility
Up to 21 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2016
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 30, 2018 · Synced Jul 22, 2026, 2:32 PM EDT
Terminated Phase 4 Interventional

KEYS: Study Comparing Clinical Health Outcomes of Telithromycin Versus Azithromycin in Outpatients With Community-acquired Lower Respiratory Tract Infections

NCT00132951
View directory record Official record
Conditions
Respiratory Tract Infections, Chronic Bronchitis, Pneumonia
Interventions
Telithromycin, Azithromycin
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years to 35 Years
Enrollment
2,051 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 26, 2009 · Synced Jul 22, 2026, 2:32 PM 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 23, 2018 · Synced Jul 22, 2026, 2:32 PM EDT
Recruiting Not applicable Interventional

Reducing Overuse of Antibiotics With Decision Support

NCT06788093
View directory record Official record
Conditions
Lower Respiratory Tract Infection, Pneumonia, Asthma, Bronchiolitis, Viral
Interventions
ED Clinical Decision Support (CDS-ED), Transitions Clinical Decision Support (CDS-Tr)
Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
6 Months to 17 Years
Enrollment
2,800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
3
States / cities
Oakland, California • San Francisco, California • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Jul 22, 2026, 2:32 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Study of BLB-201 Vaccine in Healthy Young and Older Adults

NCT05281263
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
CPI-RSV-F Vaccine (BLB-201)
Biological
Lead sponsor
Blue Lake Biotechnology Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Cincinnati, Ohio • North Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 20, 2023 · Synced Jul 22, 2026, 2:32 PM EDT
Completed No phase listed Observational

Prospective Clinical Evaluation of the FilmArray® Lower Respiratory Tract Infection (LRTI) Panel

NCT03361670
View directory record Official record
Conditions
Lower Resp Tract Infection
Interventions
Observational Study
Other
Lead sponsor
BioFire Diagnostics, LLC
Industry
Eligibility
Not listed
Enrollment
1,689 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
8
States / cities
Los Angeles, California • Maywood, Illinois • Indianapolis, Indiana + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 4, 2017 · Synced Jul 22, 2026, 2:32 PM EDT
Completed Phase 2 Interventional Results available

RI-001 in Immunosuppressed Respiratory Syncytial Virus (RSV) Infected Patients at Risk of Lower Tract RSV Illness

NCT00632463
View directory record Official record
Conditions
Upper Respiratory Tract Infection, Lower Respiratory Tract Infection
Interventions
RI-001
Biological
Lead sponsor
ADMA Biologics, Inc.
Industry
Eligibility
2 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
15
States / cities
San Francisco, California • Aurora, Colorado • Washington D.C., District of Columbia + 11 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2013 · Synced Jul 22, 2026, 2:32 PM EDT