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Condition (MeSH)

Pneumonia, Bacterial

ClinicalTrials.gov lists 203 trials for Pneumonia, Bacterial or a narrower condition beneath it. Pfizer has the most among industry and government lead sponsors, with 7.

MeSH D018410 Infections C01 C08
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Phase 1 Phase 1 17 Phase 1/2 Phase 1/2 4 Phase 2 Phase 2 21 Phase 2/3 Phase 2/3 2 Phase 3 Phase 3 33 Phase 4 Phase 4 24 Not applicable Not applicable 47 Observational Observational 54 Phase 1 Phase 1 17 Phase 1/2 Phase 1/2 4 Phase 2 Phase 2 21 Phase 2/3 Phase 2/3 2 Phase 3 Phase 3 33 Phase 4 Phase 4 24 Not applicable Not applicable 47 Observational Observational 54

Trials per phase (log scale)

1 more section with rows

134 of the 203 trials are tagged with Pneumonia, Bacterial itself; the rest are tagged with a narrower condition beneath it.

Get the Pneumonia, Bacterial report as a PDF

The PDF carries up to 50 rows of each section, where the page shows the first few, with the sources listed. Enter a work email and confirm it from the message we send, and the report follows by email.

When did Pneumonia, Bacterial trials start? (28)

Shown in this order: most recent first, 1990 onwards. 2026 is partial: trials registered with a 2026 start date so far, not a full year. 1 trial is registered to start in 2027 or later, and not listed here.

Trials over time, by phase

  • Phase 1
  • Phase 1/2
  • Phase 2
  • Phase 2/3
  • Phase 3
  • Phase 4
  • Not applicable
  • Observational
  • Other (Unknown)

Top of scale: 18

1997: 1 trials (Phase 4 1) 1999: 1 trials (Phase 2 1) 2000: 1 trials (Phase 3 1) 2001: 2 trials (Phase 3 2) 2002: 2 trials (Phase 3 1, Phase 2 1) 2003: 3 trials (Phase 4 1, Phase 3 2) 2004: 5 trials (Phase 4 2, Phase 3 1, Phase 2 1, Phase 1 1) 2005: 7 trials (Observational 1, Not applicable 1, Phase 4 2, Phase 3 2, Phase 2 1) 2007: 7 trials (Observational 1, Not applicable 1, Phase 3 1, Phase 2 3, Phase 1 1) 2008: 7 trials (Observational 2, Not applicable 1, Phase 4 1, Phase 3 2, Phase 2 1) 2009: 4 trials (Observational 2, Not applicable 1, Phase 2 1) 2010: 11 trials (Observational 2, Not applicable 1, Phase 4 2, Phase 3 2, Phase 2 2, Phase 1 2) 2011: 3 trials (Not applicable 2, Phase 2 1) 2012: 5 trials (Phase 4 2, Phase 3 3) 2013: 3 trials (Phase 3 1, Phase 2 2) 2014: 6 trials (Not applicable 2, Phase 2 3, Phase 1/2 1) 2015: 8 trials (Not applicable 4, Phase 4 1, Phase 3 2, Phase 1 1) 2016: 9 trials (Observational 4, Not applicable 1, Phase 4 2, Phase 3 1, Phase 2 1) 2017: 9 trials (Other 1, Observational 4, Not applicable 1, Phase 3 1, Phase 1/2 1, Phase 1 1) 2018: 10 trials (Observational 3, Not applicable 4, Phase 4 1, Phase 3 2) 2019: 18 trials (Observational 7, Not applicable 2, Phase 4 2, Phase 3 2, Phase 2/3 1, Phase 1/2 2, Phase 1 2) 2020: 14 trials (Observational 6, Not applicable 6, Phase 4 1, Phase 3 1) 2021: 10 trials (Observational 2, Not applicable 4, Phase 4 2, Phase 3 2) 2022: 13 trials (Observational 5, Not applicable 1, Phase 4 1, Phase 3 3, Phase 2 1, Phase 1 2) 2023: 9 trials (Observational 3, Not applicable 3, Phase 4 1, Phase 2 1, Phase 1 1) 2024: 11 trials (Observational 4, Not applicable 6, Phase 1 1) 2025: 7 trials (Observational 2, Not applicable 2, Phase 4 1, Phase 3 1, Phase 1 1)

Trials registered with a start date in each year, 1990 onward, stacked by phase (complete years only; the current partial year is in the table's notes). The table below lists the same counts, most recent years first.

Trials started per year
Year Trials started
2026 (partial year) 13
2025 7
2024 11
2023 9
2022 13
2021 10
2020 14
2019 18
2018 10
2017 9

Forecast of the full-year count, planned starts included, not rows of this table: about 16 trials starting in 2026 and about 11 in 2027, the average of the 24 months through September, counted as registered and carried forward. The rows of this table count trials registered so far with a start date in the year, planned starts included; the forecast looks ahead to the count for the whole year, so it is not the same measure. In backtests on conditions of this size, forecasts made part-way through the year were typically off by about 28 percent and ran about 20 percent low against the count later registered; forecasts made before the year began were off by about 39 percent and ran about 37 percent low against the count later registered. These figures rest on a few years of history (target years from 2018 to 2025, varying by figure), place each condition as it is mapped today rather than as it was then, and score against a count for the newest year that was still being revised. Only condition series were scored.

Prediction, not a registry value: median of 25 months from start to primary completion across 12 trials still running at the 2026-10-09 snapshot; registered median of 19 months across 141 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Pneumonia, Bacterial trials in? (9)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 17
Phase 1/2 4
Phase 2 21
Phase 2/3 2
Phase 3 33
Phase 4 24
Not applicable 47
Observational 54
Unknown 1

How many Pneumonia, Bacterial trials are recruiting? (8)

Shown in this order: the order a trial moves through, from not yet recruiting to unknown.

Trials by recruitment status
Status Trials
Not yet recruiting 7
Recruiting 13
Enrolling by invitation 1
Active, not recruiting 4
Completed 127

Status as registered on ClinicalTrials.gov. Each trial is counted once.

Which lead sponsors run the most Pneumonia, Bacterial trials? (9)

Shown in this order: most trials first. Lead sponsors the registry classes as industry, NIH, US federal, other government or network. A hospital or university the registry files as government can appear here. Sponsors it classes as academic or other are shown on the full page, because that class cannot separate an institution from a named investigator.

Lead sponsors
Sponsor Trials
Pfizer 7
GlaxoSmithKline 6
Merck Sharp & Dohme LLC 6
Wyeth is now a wholly owned subsidiary of Pfizer 5
Beijing Zhifei Lvzhu Biopharmaceutical Co., Ltd 3

Which drugs are being tested for Pneumonia, Bacterial? (3)

Shown in this order: most trials first. One row per drug, matched to a single molecule under all its names, ranked by number of trials.

Drugs tested
Drug Trials
Tigecycline 5
METHYLPREDNISOLONE 4
Doripenem 3

Interventions as named in the registry (12)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
1% Azithromycin 8
Levofloxacin 500 7
C: moxifloxacin 4
Vancomycin 1.1% 4
Ceftriaxone 4g/ 24h 4

These are the names sponsors entered on ClinicalTrials.gov that we have not matched to a single molecule. Some are drugs under a brand or code name; others are procedures, doses or arm labels.

Which serious adverse events do Pneumonia, Bacterial trials report? (10)

Shown in this order: most subjects affected first. Subjects affected summed across trials, a cross-trial signal, not a rate.

Serious adverse events in this condition's trials
Adverse event Subjects affected Trials
Pneumonia 164 25
Septic shock 109 11
Readmission 104 1
Sepsis 82 14
Respiratory failure 70 9

Which publications cover Pneumonia, Bacterial? (539)

Shown in this order: major-topic papers first, then newest, then most linked to trials.

Sub-conditions in MeSH (3)

MeSH descendants one level down with at least one trial, most trials first.

Not on this page

Not measured: delivery record.

Checked, with nothing recorded for this condition: prevalence and rare-disease identity.

Browse all condition evidence pages