Clinical trials
Respiratory Tract Infections trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
208 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2001 | 1 |
| 2003 | 3 |
| 2004 | 5 |
| 2005 | 7 |
| 2006 | 8 |
| 2007 | 4 |
| 2008 | 8 |
| 2009 | 9 |
| 2010 | 9 |
| 2011 | 8 |
| 2012 | 5 |
| 2013 | 7 |
| 2014 | 8 |
| 2015 | 10 |
| 2016 | 9 |
| 2017 | 11 |
| 2018 | 10 |
| 2019 | 9 |
| 2020 | 22 |
| 2021 | 6 |
| 2022 | 11 |
| 2023 | 14 |
| 2024 | 8 |
| 2025 | 7 |
| 2026 | 8 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 150 |
| Terminated | 22 |
| Recruiting | 13 |
| Active, not recruiting | 7 |
| Unknown status | 6 |
| Withdrawn | 5 |
| Enrolling by invitation | 3 |
| Not yet recruiting | 1 |
| Suspended | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Pfizer | 13 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 11 |
| University of California, Los Angeles | 10 |
| Medicago | 6 |
| GlaxoSmithKline | 5 |
| University of California, San Francisco | 5 |
| University of Wisconsin, Madison | 5 |
| BioFire Diagnostics, LLC | 4 |
| University of Washington | 4 |
| BioNTech SE | 3 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Respiratory Tract Infections | 208 |
| Influenza, Human | 39 |
| Virus Diseases | 36 |
| Pneumonia | 29 |
| Respiratory Tract Diseases | 28 |
| COVID-19 | 26 |
| Infections | 25 |
| Lung Diseases | 17 |
| RNA Virus Infections | 17 |
| Coronavirus Infections | 16 |
Trials
Showing 1 to 25 of 208. Each trial links to its page on Pharma Observatory.
108 more trials match. See them on Pharma Observatory
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
No changes to these trials in the last 7 days.
Go deeper on Pharma Observatory
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