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Showing 1–24 of 314 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Respiratory Illness Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

FluSAFE: Flu SMS Alerts to Freeze Exposure

NCT03274310
View directory record Official record
Conditions
Influenza, Acute Respiratory Infection, Influenza-like Illness
Interventions
Educational text messages
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
Not listed
Enrollment
1,918 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 15, 2025 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Sickness Evaluation at Altitude With Acetazolamide at Relative Dosages

NCT03424226
View directory record Official record
Conditions
Acute Mountain Sickness
Interventions
Acetazolamide
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 75 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 19, 2018 · Synced Sep 13, 2026, 8:20 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Microbes and Respiratory Illnesses

NCT06059027
View directory record Official record
Conditions
Virus, Asthma
Interventions
Not listed
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
4 Years to 12 Years
Enrollment
290 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Not applicable Interventional

Patient Centered Cloud-based Electronic System: Ambient Warning and Response Evaluation (ProCCESs AWARE)

NCT02039297
View directory record Official record
Conditions
Critical Illness, Sepsis, Respiratory Failure, Shock, Coma, Bleeding, Trauma
Interventions
Patient Centered Cloud-based Electronic System: Ambient Warning and Response Evaluation
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
7,813 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
6
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Lawrence, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2017 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Not applicable Interventional Results available

Improving Psychological Distress Among Critical Illness Survivors and Their Caregivers

NCT01983254
View directory record Official record
Conditions
Intensive Care Unit Survivors, Informal Caregivers (Family and Friends)
Interventions
coping skills training, education program
Behavioral · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
417 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
4
States / cities
Chapel Hill, North Carolina • Durham, North Carolina • Pittsburgh, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2020 · Synced Sep 13, 2026, 8:20 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Advance Care Planning: Communicating With Outpatients for Vital Informed Decision

NCT04660422
View directory record Official record
Conditions
Advanced Care Planning, Shared Decision Making, Video Decision Aids, Communication Skills, Advance Directives, Natural Language Processing, Covid19
Interventions
VitalTalk communication skills training, ACP Decisions Video Program, Intervention training:, Medical Record Review
Other
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
65 Years and older
Enrollment
42,019 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Jul 4, 2022 · Synced Sep 13, 2026, 8:20 AM EDT
Terminated Phase 2Phase 3 Interventional

Enteral Glutamine in Critical Illness

NCT00318331
View directory record Official record
Conditions
Critical Illness, Sepsis, Respiratory Insufficiency
Interventions
Glutamine
Drug
Lead sponsor
Christiana Care Health Services
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Mar 12, 2008 · Synced Sep 13, 2026, 8:20 AM EDT
Suspended Not applicable Interventional

ORCHARDS-AIR Study

NCT07298967
View directory record Official record
Conditions
Acute Respiratory Infection, Influenza-like Illness
Interventions
Nasal swab, Indoor air quality monitor
Diagnostic Test · Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
4 Years and older
Enrollment
422 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Sep 13, 2026, 8:20 AM EDT
Completed No phase listed Observational

Inhaled Sedation in COVID-19-related Acute Respiratory Distress Syndrome (ISCA): an International Research Data Study in the Recent Context of Widespread Disease Resulting From the 2019 (SARS-CoV2) Coronavirus Pandemics (COVID-19)

NCT04383730
View directory record Official record
Conditions
Critically Illness, Sedation, Invasive Mechanical Ventilation, Acute Respiratory Distress Syndrome
Interventions
Intravenous sedation, Inhaled sedation
Drug
Lead sponsor
University Hospital, Clermont-Ferrand
Other
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 4, 2021 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Phase 4 Interventional

Adjuvanted Influenza Vaccination in U.S. Nursing Homes

NCT02882100
View directory record Official record
Conditions
Influenza, Influenza-like Illness
Interventions
adjuvanted trivalent influenza vaccine, trivalent influenza vaccine
Biological
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
65 Years and older
Enrollment
823 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 14, 2023 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Not applicable Interventional Results available

DirEct Versus VIdeo LaryngosCopE Trial

NCT05239195
View directory record Official record
Conditions
Acute Respiratory Failure
Interventions
Video Laryngoscope, Direct Laryngoscope
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
1,420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
12
States / cities
Birmingham, Alabama • Aurora, Colorado • Denver, Colorado + 9 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2024 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Phase 2 Interventional

Efficacy and Safety of Norketotifen in Uncomplicated Influenza-like Illness

NCT04610047
View directory record Official record
Conditions
Influenza, Influenza -Like Illness
Interventions
Norketotifen, Placebo
Drug
Lead sponsor
Emergo Therapeutics, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
20
States / cities
Phoenix, Arizona • Los Angeles, California • DeBary, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2023 · Synced Sep 13, 2026, 8:20 AM EDT
Active, not recruiting No phase listed Observational

Long Term Outcomes of Patients With COVID-19

NCT04360538
View directory record Official record
Conditions
Critical Illness, Corona Virus Infection, Respiratory Failure, Covid-19
Interventions
Quality of Life, Impact Event Score, Hospital anxiety and depression scale
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 13, 2026, 8:20 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Apple Respiratory Study

NCT04912180
View directory record Official record
Conditions
Acute Respiratory Infection, Coronavirus Infection, Influenza
Interventions
Not listed
Lead sponsor
Apple Inc.
Industry
Eligibility
22 Years and older
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 13, 2021 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy Trial of 3804-250A in the Prevention of Cold Illnesses

NCT00762476
View directory record Official record
Conditions
Common Cold
Interventions
3804-250A, 3804-291
Drug
Lead sponsor
The Dial Corporation
Industry
Eligibility
18 Years and older
Enrollment
411 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
2
States / cities
Paramus, New Jersey • Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 15, 2012 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Not applicable Interventional Results available

Mobile Health Study and Enhanced Symptom Monitoring in COVID-19 Cancer Patients

NCT04397614
View directory record Official record
Conditions
Sars-CoV2, Covid-19
Interventions
mHealth Assessments
Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 23, 2023 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Not applicable Interventional

Compass Course: COVID-19

NCT05295238
View directory record Official record
Conditions
COVID-19
Interventions
Compass Course
Behavioral
Lead sponsor
Allina Health System
Other
Eligibility
18 Years to 80 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 16, 2024 · Synced Sep 13, 2026, 8:20 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers Results available

A Pragmatic Assessment of Influenza Vaccine Effectiveness in the DoD

NCT03734237
View directory record Official record
Conditions
Influenza, Influenza-like Illness, Influenza Vaccines
Interventions
Egg based influenza vaccines, Recombinant influenza vaccines, Cell-culture based influenza vaccines
Biological
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years and older
Enrollment
15,448 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
9
States / cities
San Diego, California • Annapolis, Maryland • Bethesda, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Not applicable Interventional Results available

Lift Mobile Mindfulness for COVID-19 Distress Symptoms

NCT04581200
View directory record Official record
Conditions
COVID-19, Cardiorespiratory Failure
Interventions
Lift
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
4
States / cities
Aurora, Colorado • Ann Arbor, Michigan • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 6, 2023 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Gut-microbiota Targeted Nutritional Intervention for Gut Barrier Integrity at High Altitude

NCT04111263
View directory record Official record
Conditions
Gastrointestinal Injury, Acute Mountain Sickness
Interventions
FP, Placebo, High altitude, Sea level
Dietary Supplement · Other
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
17 Years to 39 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 22, 2022 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Not applicable Interventional

Outcomes of Triaged Family Care in Advanced Cancer

NCT00709176
View directory record Official record
Conditions
Advanced Cancer
Interventions
Brief FOCUS Program, Extensive FOCUS Program
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
484 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
5
States / cities
Ann Arbor, Michigan • Detroit, Michigan • Southfield, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 10, 2014 · Synced Sep 13, 2026, 8:20 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of the AudibleHealth Dx AI/ML-Based Dx SaMD Using FCV-SDS in the Diagnosis of COVID-19 Illness: Clinical Validation

NCT05364268
View directory record Official record
Conditions
2019 Novel Coronavirus Disease, 2019 Novel Coronavirus Infection, 2019-nCoV Disease, COVID-19 Pandemic, COVID-19 Virus Disease, COVID-19 Virus Infection, Coronavirus Disease 2019, Coronavirus Disease-19, SARS-CoV-2 Infection
Interventions
Diagnostic Test: Diagnostic Software as Medical Device
Device
Lead sponsor
AudibleHealth AI, Inc.
Industry
Eligibility
18 Years to 100 Years
Enrollment
514 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Sunrise, Florida
Source: ClinicalTrials.gov public record
Updated Jul 19, 2022 · Synced Sep 13, 2026, 8:20 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Induced Changes in Ventilatory Responsiveness and Altitude Exposure

NCT01241513
View directory record Official record
Conditions
Effects of High Altitude, Hypoxia, Inadequate or Impaired Breathing Pattern or Ventilation, Abnormal Blood Oxygen Pressure
Interventions
NAC, Placebo
Drug
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 39 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 29, 2020 · Synced Sep 13, 2026, 8:20 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Decompression Tables for Diving at Altitude

NCT03390335
View directory record Official record
Conditions
Decompression Sickness, Acute Mountain Sickness
Interventions
Pressure, Breathing Gas
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 40 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 13, 2021 · Synced Sep 13, 2026, 8:20 AM EDT