Respiratory Infection Clinical Trials

48 recruitingLast updated: June 18, 2026

There are 48 actively recruiting respiratory infection clinical trials across 59 countries. Studies span Not Applicable, Phase 2, Phase 3, Phase 4, Phase 1. Top locations include Los Angeles, California, United States, Melbourne, Victoria, Australia, London, United Kingdom. Updated daily from ClinicalTrials.gov.


Respiratory Infection Trials at a Glance

48 actively recruiting trials for respiratory infection are listed on ClinicalTrialsFinder across 6 cities in 59 countries. The largest study group is Not Applicable with 12 trials, with the heaviest enrollment activity in Los Angeles, Melbourne, and London. Lead sponsors running respiratory infection studies include Australian and New Zealand Intensive Care Research Centre, Assistance Publique - Hôpitaux de Paris, and Valenta Pharm JSC.

Browse respiratory infection trials by phase

Treatments under study

About Respiratory Infection Clinical Trials

Looking for clinical trials for Respiratory Infection? There are currently 6 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 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 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 48 trials

Recruiting

Epidemiological Characteristics and Clinical Burden of RSV Infection in Children Under 24 Months in Ho Chi Minh City (2026-2028)

Acute Respiratory Infections (ARIs)
Tam Anh Research Institute2,000 enrolled3 locationsNCT07640581
Recruiting
Phase 4

Trial of an AI-enabled Digital Stethoscope to Improve Antibiotic Stewardship

Respiratory Infections in Children
Johns Hopkins University2,500 enrolled1 locationNCT07362433
Recruiting

Pharmacokinetics of Antibiotics in Patients With Cystic Fibrosis Trated With Elexacaftor/Tezacaftor/Ivacaftor (ETI)

Cystic Fibrosis (CF)Pulmonary ExacerbationRespiratory Infection Bacterial
Fondation Ildys30 enrolled1 locationNCT07629986
Recruiting

Functional Impact of Acute Respiratory Viral Infections in Older Adults

Respiratory Infections in Old Age
University Hospital, Grenoble1,600 enrolled24 locationsNCT07388173
Recruiting
Not Applicable

Impact of a Multiplex Respiratory PCR Test on Outcomes for Patients Presenting With Respiratory Illness in the Urgent Care Setting: A Hybrid-Effectiveness Quasi-Experimental Trial

Acute Respiratory Infections (ARIs)
BioMérieux800 enrolled2 locationsNCT07513519
Recruiting
Not Applicable

Immune Defense Protein Impact On Respiratory Immune Outcomes

Upper respiratory DiseaseInfluenzaViral Upper Respiratory Infection
Quantec Ltd300 enrolled1 locationNCT07431840
Recruiting
Phase 2

Phase 2a Multiple Ascending Dose Study in Hospitalized Patients With Pneumonia.

PneumoniaRespiratory InfectionAcute Respiratory Distress Syndrome+3 more
Vasomune Therapeutics, Inc.120 enrolled5 locationsNCT05123755
Recruiting
Phase 2

A Study Assessing Safety, Tolerability, and Efficacy of INNA-051 in Preventing Respiratory Illness Due to Viral Infections in Healthy Adults 18 to 45 Years of Age

Viral Respiratory InfectionViral Respiratory Illnesses
ENA Respiratory Pty Ltd1,100 enrolled5 locationsNCT07222670
Recruiting
Not Applicable

Effectiveness and Implementation of a National Guideline for Acute Respiratory Tract Infections to Reduce Antibiotic Prescribing in Swiss Primary Care

Acute Respiratory InfectionInfluenza Like-illness
Center for Primary Care and Public Health (Unisante), University of Lausanne, Switzerland200 enrolled1 locationNCT07396428
Recruiting
Not Applicable

ORCHARDS-AIR Study

Acute Respiratory InfectionInfluenza Like-illness
University of Wisconsin, Madison422 enrolled1 locationNCT07298967
Recruiting

Cardiac Magnetic Resonance Tissue Characterization in COVID-19 Survivors

COVID-19 pneumoniaCOVID-19 Respiratory InfectionCOVID-19+4 more
Weill Medical College of Cornell University510 enrolled3 locationsNCT05164744
Recruiting
Not Applicable

Study Evaluating the Impact of Using Triplex Rapid Diagnostic Tests (SARS-CoV-2/Influenza/RSV) on Antibiotic Prescribing

Respiratory infectionsAntibiotic
Assistance Publique - Hôpitaux de Paris2,000 enrolled1 locationNCT07243249
Recruiting
Not Applicable

Impact of a Multimodal Intervention on Antibiotic Prescribing for Respiratory Infections in Primary Care

AnginaAcute BronchiolitisAcute Bronchitis+8 more
University Hospital, Caen4,500 enrolled1 locationNCT07359287
Recruiting
Not Applicable

Artificial Intelligence Diagnostic Decision Support to Reduce Antimicrobial Prescriptions in Young Children With Colds

Acute Otitis Media (AOM)Upper Respiratory Infection
Timothy Shope300 enrolled2 locationsNCT06876259
Recruiting

Estimating Risk of Respiratory Infections Attributable to CFTR Heterozygosity

Respiratory infectionsCarrier State
Philip Polgreen160 enrolled1 locationNCT05474430
Recruiting
Phase 1Phase 2

A Double-Blind, Active-Controlled, Multiple-Ascending Dose Study of Aerosolized RSP-1502 in Subjects With CF and Chronic PA Lung Infection

Pseudomonas aeruginosaCystic Fibrosis LungRespiratory Infections, Recurrent, Chronic
Respirion Pharmaceuticals Pty Ltd72 enrolled22 locationsNCT06016088
Recruiting

The Fever Clinic Acute Respiratory Cohort

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

Passive Detection- SARS-CoV-2 (COVID-19) A&M Breathalyzer (PROTECT Kiosk) for Operational Medicine

SARS-CoV-2 virusCOVID-19 pneumoniaCOVID-19 Respiratory Infection+2 more
The Geneva Foundation100 enrolled1 locationNCT06402318
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

Efficacy of Ultraviolet Germicidal Irradiation Devices to Reduce Respiratory Infections in Nursing Homes: Cluster Randomized Crossover Trial

Acute Respiratory Infections
Centre Hospitalier Emile Roux1,200 enrolled12 locationsNCT06569160