Clinical trials
Completed Pneumococcal Infections trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
66 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 1 |
| 2002 | 1 |
| 2003 | 2 |
| 2004 | 3 |
| 2006 | 1 |
| 2007 | 3 |
| 2008 | 1 |
| 2009 | 2 |
| 2010 | 2 |
| 2012 | 1 |
| 2013 | 1 |
| 2014 | 2 |
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 10 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 2 |
| 2025 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 66 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Pfizer | 23 |
| Merck Sharp & Dohme LLC | 18 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 6 |
| Centers for Disease Control and Prevention | 2 |
| GlaxoSmithKline | 2 |
| University of Toledo Health Science Campus | 2 |
| Vaxcyte, Inc. | 2 |
| Wyeth is now a wholly owned subsidiary of Pfizer | 2 |
| Affinivax, Inc. | 1 |
| Auburn University | 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 |
|---|---|
| Pneumococcal Infections | 66 |
| Pneumonia | 6 |
| HIV Infections | 4 |
| Pneumonia, Pneumococcal | 3 |
| Acquired Immunodeficiency Syndrome | 2 |
| Pneumonia, Bacterial | 2 |
| AIDS-Related Complex | 1 |
| AIDS-Related Opportunistic Infections | 1 |
| COVID-19 | 1 |
| Hepatitis B | 1 |
Trials
Showing 1 to 25 of 66. 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.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.