Clinical trials
Phase 4 Influenza, Human trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
342 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2002 | 2 |
| 2003 | 4 |
| 2004 | 7 |
| 2005 | 7 |
| 2006 | 12 |
| 2007 | 10 |
| 2008 | 13 |
| 2009 | 32 |
| 2010 | 28 |
| 2011 | 21 |
| 2012 | 22 |
| 2013 | 24 |
| 2014 | 17 |
| 2015 | 16 |
| 2016 | 15 |
| 2017 | 15 |
| 2018 | 15 |
| 2019 | 13 |
| 2020 | 7 |
| 2021 | 18 |
| 2022 | 6 |
| 2023 | 10 |
| 2024 | 9 |
| 2025 | 9 |
| 2026 | 8 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 266 |
| Unknown status | 29 |
| Terminated | 15 |
| Active, not recruiting | 13 |
| Recruiting | 8 |
| Not yet recruiting | 5 |
| Withdrawn | 4 |
| Suspended | 1 |
| Enrolling by invitation | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Sanofi Pasteur, a Sanofi Company | 32 |
| Stanford University | 20 |
| GlaxoSmithKline | 12 |
| MedImmune LLC | 12 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 11 |
| Sinovac Biotech Co., Ltd | 10 |
| Duke University | 9 |
| Seqirus | 9 |
| McMaster University | 8 |
| Jiangsu Province Centers for Disease Control and Prevention | 7 |
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 |
|---|---|
| Influenza, Human | 342 |
| Respiratory Tract Infections | 10 |
| Orthomyxoviridae Infections | 9 |
| COVID-19 | 7 |
| Virus Diseases | 7 |
| Pneumonia | 6 |
| Heart Failure | 5 |
| Common Cold | 4 |
| HIV Infections | 4 |
| Infections | 4 |
Trials
Showing 1 to 25 of 342. Each trial links to its page on Pharma Observatory.
242 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.
Go deeper on Pharma Observatory
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