Clinical trials
Phase 4 Diphtheria trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
55 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2003 | 4 |
| 2004 | 3 |
| 2005 | 2 |
| 2006 | 5 |
| 2007 | 3 |
| 2008 | 7 |
| 2009 | 3 |
| 2010 | 3 |
| 2011 | 8 |
| 2012 | 4 |
| 2013 | 2 |
| 2014 | 1 |
| 2016 | 3 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 47 |
| Unknown status | 4 |
| Recruiting | 2 |
| Not yet recruiting | 1 |
| Terminated | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| GlaxoSmithKline | 20 |
| Sanofi Pasteur, a Sanofi Company | 13 |
| Sanofi | 6 |
| Shantha Biotechnics Limited | 3 |
| Bandim Health Project | 1 |
| Canadian Immunization Research Network | 1 |
| Chiang Mai University | 1 |
| Crucell Holland BV | 1 |
| Institute of Arthritis Research | 1 |
| Korea University Guro Hospital | 1 |
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 | 55 |
| Tetanus | 53 |
| Whooping Cough | 35 |
| Poliomyelitis | 19 |
| Haemophilus Infections | 15 |
| Hepatitis B | 12 |
| Meningococcal Infections | 3 |
| Meningitis | 2 |
| Pneumococcal Infections | 2 |
| Infant Death | 1 |
Trials
Showing 51 to 55 of 55. Each trial links to its page 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.
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