respiratory tract infection Clinical Trials

44 recruitingLast updated: June 17, 2026

There are 44 actively recruiting respiratory tract infection clinical trials across 35 countries. Studies span Not Applicable, Phase 4, Phase 3, Phase 1, Phase 2. Top locations include Dallas, Texas, United States, Melbourne, Victoria, Australia, London, United Kingdom. Updated daily from ClinicalTrials.gov.


respiratory tract infection Trials at a Glance

44 actively recruiting trials for respiratory tract infection are listed on ClinicalTrialsFinder across 6 cities in 35 countries. The largest study group is Not Applicable with 14 trials, with the heaviest enrollment activity in Dallas, Melbourne, and London. Lead sponsors running respiratory tract infection studies include European Clinical Research Alliance for Infectious Diseases (ECRAID), Murdoch Childrens Research Institute, and Professor Klaus Bønnelykke.

Browse respiratory tract infection trials by phase

Treatments under study

About respiratory tract infection Clinical Trials

Looking for clinical trials for respiratory tract infection? There are currently 2 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new respiratory tract infection trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about respiratory tract infection clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 44 trials

Recruiting
Phase 3

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

COVID-19Lower Respiratory Tract InfectionImmunocompromised+1 more
Ansun Biopharma, Inc.274 enrolled67 locationsNCT03808922
Recruiting
Not Applicable

Optimal Implementation of Antimicrobial Stewardship in General Practice

Respiratory Tract Infections (RTI)The Use of Antimicrobial Stewardship in in General Practice (Family Medicine)
University of Wollongong120 enrolled4 locationsNCT06953804
Recruiting
Phase 1

A Study of How Ibuzatrelvir is Taken up Into the Blood of Healthy Adults After Taking Different Tablets of Ibuzatrelvir

Upper respiratory tract infectionsrespiratory tract infectionCOVID-19 (SARS-CoV-2) infection+8 more
Pfizer18 enrolled1 locationNCT07552779
Recruiting
Phase 2

Evaluation of the Clinical Efficacy of Antrrix Probiotics in Improving Recurrent Respiratory Infections in Infants and Young Children

Recurrent Respiratory Tract Infections
Min-Tze LIONG120 enrolled2 locationsNCT07297966
Recruiting

Potential of Interface Care Models to Deliver More Appropriate Care to Patients With Acute Medical Illness

Chronic Obstructive Pulmonary Disease (COPD)PneumoniaInfection+6 more
National University Hospital, Singapore220 enrolled1 locationNCT07536035
Recruiting

A Long-term Observational Study Evaluating the Presentation and Management of Acute Respiratory Tract Infections in Primary Care Across Europe

Acute Respiratory Tract Infection
European Clinical Research Alliance for Infectious Diseases (ECRAID)2,000 enrolled3 locationsNCT06282718
Recruiting
Not Applicable

Evaluation Viral RNA and Virus Infectivity in Exhaled Air Before and After Use of One Dose With ColdZyme Mouth Spray

URTI - Viral Upper Respiratory Tract Infection
Lund University200 enrolled1 locationNCT07041671
Recruiting
Not Applicable

Intravenous Versus Oral Treatment of the Main Acute Infections

CellulitisRespiratory Tract InfectionsUrinary Tract Infections
University of Southern Denmark4,000 enrolled7 locationsNCT06715306
Recruiting
Not Applicable

Comparison of Nasopharyngeal Swab v. Nasopharyngeal Saline Wash or Saliva Collection in Testing for Respiratory Viruses

Respiratory Tract Infections
University of Nebraska1,000 enrolled1 locationNCT05864118
Recruiting
Not Applicable

An Adjunct Test Distinguishing Bacterial From Viral Etiology Improves Resource Utilization and Efficiency in the ED.

Respiratory Tract Infections
The University of Texas Health Science Center, Houston100 enrolled1 locationNCT06070688
Recruiting
Not Applicable

Reducing Overuse of Antibiotics With Decision Support

AsthmaPneumoniaLower Respiratory Tract Infection+1 more
Vanderbilt University Medical Center2,800 enrolled3 locationsNCT06788093
Recruiting
Not Applicable

The Impact of MeMed BV® on Management of Patients With Suspected Lower Respiratory Tract Infections (LRTI) in the Emergency Department (ED) and Urgent Care Center (UCC) ("JUPITER" TRIAL)

Lower Respiratory Tract Infection
MeMed Diagnostics Ltd.1,316 enrolled10 locationsNCT05762302
Recruiting

The Fever Clinic Acute Respiratory Cohort

Influenza Like-illnessCommunity-acquired PneumoniaFebrile Illnesses+2 more
Fudan University1,000 enrolled1 locationNCT07278700
Recruiting

Comparing and Predicting the Risk of Respiratory Tract Infection (RTI) Among Post-menopausal Women on or Without Hormone Replacement Therapy (HRT): an Observational Cohort Study

Menopausal WomenRespiratory Tract Infections (RTI)
Insel Gruppe AG, University Hospital Bern400 enrolled1 locationNCT07292857
Recruiting
Phase 4

Post Authorization Efficacy and Safety Study (PAES) to Confirm and Collect More Clinical Data of Buccalin® Tablets In the Prophylaxis of Recurrent Lower Respiratory Tract Infections (RLRTIs).

Respiratory InfectionLower Respiratory Tract Infection (LRTI)
Laboratorio Farmaceutico SIT srl240 enrolled10 locationsNCT06736288
Recruiting
Not Applicable

CRP and Patient Information Leaflets to Optimise Antibiotic Treatments for Adults With Respiratory Tract Infections in Primary Care in Kyrgyzstan

InflammationRespiratory Tract Infection BacterialRespiratory Tract Infection Viral+2 more
Rigshospitalet, Denmark1,050 enrolled2 locationsNCT07261969
Recruiting
Not Applicable

Outpatient Pediatric Pulse Oximeters in Africa

HypoxiaRespiratory Tract InfectionsChild+1 more
Johns Hopkins University1,200 enrolled1 locationNCT05914324
Recruiting

Respiratory Infections in Young Children

Viral infectionsCohort StudyRespiratory Tract Infections (RTI)+1 more
Eduardo Lopez -Medina1,088 enrolled2 locationsNCT07249996
Recruiting
Phase 1

Phase I Study of Single/Multiple Ascending Doses of JKN2501 for Injection in Chinese Healthy Volunteers

Bacterial InfectionsRespiratory Tract InfectionsUrinary Tract Infections+1 more
Joincare Pharmaceutical Group Industry Co., Ltd66 enrolled1 locationNCT07207291
Recruiting
Phase 3

Fish Oil in pREgnancY for Personalized Prevention of Early Childhood Asthma

AsthmaFractures, BoneAllergy+8 more
Professor Klaus Bønnelykke2,000 enrolled1 locationNCT06560255