Clinical trials
Influenza, Human trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
2,150 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 4 |
| 2001 | 7 |
| 2002 | 7 |
| 2003 | 9 |
| 2004 | 28 |
| 2005 | 59 |
| 2006 | 91 |
| 2007 | 103 |
| 2008 | 98 |
| 2009 | 206 |
| 2010 | 148 |
| 2011 | 99 |
| 2012 | 112 |
| 2013 | 118 |
| 2014 | 93 |
| 2015 | 78 |
| 2016 | 92 |
| 2017 | 78 |
| 2018 | 79 |
| 2019 | 75 |
| 2020 | 71 |
| 2021 | 75 |
| 2022 | 96 |
| 2023 | 83 |
| 2024 | 82 |
| 2025 | 73 |
| 2026 | 68 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 1,685 |
| Unknown status | 143 |
| Recruiting | 95 |
| Terminated | 75 |
| Withdrawn | 54 |
| Active, not recruiting | 45 |
| Not yet recruiting | 40 |
| Enrolling by invitation | 8 |
| Suspended | 5 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| GlaxoSmithKline | 184 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 173 |
| Sanofi Pasteur, a Sanofi Company | 116 |
| Novartis Vaccines | 59 |
| Seqirus | 51 |
| MedImmune LLC | 41 |
| Stanford University | 29 |
| Alachua Government Services, Inc. | 24 |
| Novartis | 24 |
| ModernaTX, Inc. | 21 |
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 | 2,150 |
| COVID-19 | 111 |
| Virus Diseases | 97 |
| Respiratory Tract Infections | 88 |
| Orthomyxoviridae Infections | 72 |
| Influenza in Birds | 68 |
| Infections | 53 |
| Common Cold | 47 |
| Pneumonia | 34 |
| Respiratory Tract Diseases | 26 |
Trials
Showing 1 to 25 of 2,150. Each trial links to its page on Pharma Observatory.
2,050 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.