Clinical trials
Diphtheria trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
254 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 2 |
| 2001 | 1 |
| 2002 | 5 |
| 2003 | 15 |
| 2004 | 9 |
| 2005 | 13 |
| 2006 | 33 |
| 2007 | 17 |
| 2008 | 13 |
| 2009 | 13 |
| 2010 | 14 |
| 2011 | 20 |
| 2012 | 11 |
| 2013 | 11 |
| 2014 | 8 |
| 2015 | 6 |
| 2016 | 9 |
| 2017 | 3 |
| 2018 | 7 |
| 2019 | 9 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 7 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 218 |
| Unknown status | 13 |
| Active, not recruiting | 6 |
| Recruiting | 6 |
| Not yet recruiting | 6 |
| Terminated | 3 |
| Withdrawn | 2 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| GlaxoSmithKline | 97 |
| Sanofi Pasteur, a Sanofi Company | 58 |
| Sanofi | 18 |
| CanSino Biologics Inc. | 7 |
| LG Chem | 7 |
| Merck Sharp & Dohme LLC | 7 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 5 |
| Crucell Holland BV | 3 |
| Shantha Biotechnics Limited | 3 |
| Tanabe Pharma Corporation | 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 |
|---|---|
| Diphtheria | 254 |
| Tetanus | 242 |
| Whooping Cough | 159 |
| Poliomyelitis | 113 |
| Haemophilus Infections | 107 |
| Hepatitis B | 101 |
| Influenza, Human | 7 |
| Measles | 7 |
| Virus Diseases | 7 |
| Meningococcal Infections | 6 |
Trials
Showing 51 to 75 of 254. Each trial links to its page on Pharma Observatory.
154 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
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.