Clinical trials
Completed Influenza, Human trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
749 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 2 |
| 2001 | 4 |
| 2002 | 2 |
| 2003 | 3 |
| 2004 | 22 |
| 2005 | 32 |
| 2006 | 33 |
| 2007 | 41 |
| 2008 | 43 |
| 2009 | 66 |
| 2010 | 48 |
| 2011 | 35 |
| 2012 | 38 |
| 2013 | 48 |
| 2014 | 38 |
| 2015 | 25 |
| 2016 | 27 |
| 2017 | 35 |
| 2018 | 31 |
| 2019 | 25 |
| 2020 | 22 |
| 2021 | 21 |
| 2022 | 35 |
| 2023 | 30 |
| 2024 | 28 |
| 2025 | 7 |
| 2026 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 749 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| National Institute of Allergy and Infectious Diseases (NIAID) | 141 |
| Sanofi Pasteur, a Sanofi Company | 64 |
| GlaxoSmithKline | 52 |
| MedImmune LLC | 30 |
| Seqirus | 25 |
| ModernaTX, Inc. | 17 |
| Novartis Vaccines | 13 |
| Columbia University | 12 |
| Duke University | 12 |
| Protein Sciences Corporation | 12 |
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 | 749 |
| Influenza in Birds | 48 |
| Virus Diseases | 41 |
| Respiratory Tract Infections | 31 |
| COVID-19 | 29 |
| Orthomyxoviridae Infections | 28 |
| Infections | 17 |
| Respiratory Tract Diseases | 11 |
| Coronavirus Infections | 10 |
| Common Cold | 9 |
Trials
Showing 1 to 25 of 749. Each trial links to its page on Pharma Observatory.
649 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
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.