Gram-negative bacterial infections
MONDO:0021678Infections caused by bacteria that show up as pink (negative) when treated by the gram-staining method.
Also known as: bacterial infection, gram-negative, bacterial infections, gram negative, bacterial infections, gram-negative, bacterial infections, gramme negative, gram negative bacterial infections, gram-negative bacterial infection, gramme negative bacterial infections, infection, gram-negative bacterial
300 clinical trials for this condition and its sub-types, 33 tagged with Gram-negative bacterial infections itself.
Follow this condition to get notified about new trialsWhere it sits in the disease tree
Browse by category →Sub-types of Gram-negative bacterial infections
-
Helicobacter pylori infectious disease 115 trials
-
Treponema infectious disease 6 trials · 57 incl. sub-types
4 sub-types
- Syphilis 47 trials · 56 incl. sub-types Sub-types →
- Pinta disease 1 trial
- Syphilitic encephalitis 0 trials
- Syphilitic meningitis 0 trials
-
Chlamydiaceae infections 1 trial · 55 incl. sub-types
1 sub-type
- Chlamydia infectious disease 34 trials · 55 incl. sub-types Sub-types →
-
Bordetellosis 0 trials · 39 incl. sub-types
2 sub-types
- Pertussis 39 trials
- Bordetella parapertussis infectious disease 0 trials
-
Moraxellaceae infectious disease 0 trials · 8 incl. sub-types
1 sub-type
- Acinetobacter infectious disease 8 trials
-
Pneumonia caused by gram negative bacteria 5 trials · 7 incl. sub-types
2 sub-types
- Pneumonia caused by chlamydia 2 trials
- Rickettsial pneumonia 0 trials
-
Rickettsiaceae infectious disease 0 trials · 4 incl. sub-types
3 sub-types
- Typhus 0 trials · 3 incl. sub-types Sub-types →
- Spotted fever 0 trials · 1 incl. sub-types Sub-types →
- Rickettsial pneumonia 0 trials
-
Burkholderia infectious disease 0 trials · 3 incl. sub-types
3 sub-types
- Melioidosis 3 trials
- Cepacia syndrome 0 trials
- Glanders 0 trials
-
Anaplasmataceae infectious disease 0 trials · 2 incl. sub-types
4 sub-types
- Ehrlichiosis 1 trial Sub-types →
- Human granulocytic anaplasmosis 1 trial
- Neorickettsia infectious disease 0 trials
- Sennetsu fever 0 trials
-
Bartonellaceae infectious disease 0 trials · 1 incl. sub-types
1 sub-type
- Bartonellosis 0 trials · 1 incl. sub-types Sub-types →
-
Bacteroidaceae infectious disease 0 trials
1 sub-type
- Bacteroides infectious disease 0 trials
-
Fusobacteriaceae infectious disease 0 trials
1 sub-type
- Fusobacterium infectious disease 0 trials
-
1 sub-type
- Syphilitic meningitis 0 trials
-
Streptobacillus infectious disease 0 trials
1 sub-type
- Streptobacillary rat-bite fever 0 trials
Most studied deeper sub-types
-
New vaccine aims to shield against deadly meningitis strains
Vaccine Recruiting nowThis study tests a new vaccine designed to protect against four types of meningococcal bacteria that can cause serious infections like meningitis and sepsis. About 1,100 healthy adults aged 19 to 55 will receive a single dose to see how well it triggers the immune system and if i…
Phase 2/3 • Sponsor: EyeGene Inc. • Aim: Vaccine
Last updated Jun 27, 2026 08:00 UTC
-
Massive trial aims to outsmart superbugs in blood infections
Disease control Recruiting nowThis study compares different antibiotic strategies for people hospitalized with Gram-negative bloodstream infections. The goal is to find which approach leads to better outcomes, like survival and fewer complications, while also reducing the risk of antibiotic resistance. About …
Sponsor: Sunnybrook Health Sciences Centre • Aim: Disease control
Last updated Sep 06, 2026 00:00 UTC
-
New antibiotic combo vaborem tested in kids for tough infections
Disease control Recruiting nowThis study is testing the safety and how the body handles Vaborem, a combination of two antibiotics (meropenem and vaborbactam), in children from birth to under 18 years old who have serious Gram-negative bacterial infections. All 44 participants will receive the drug intravenous…
Phase 2 • Sponsor: Menarini Group • Aim: Disease control
Last updated Aug 02, 2026 00:00 UTC
-
New hope for kids with tough infections: experimental antibiotic combo tested
Disease control Recruiting nowThis study tests a new IV antibiotic (aztreonam-avibactam) in hospitalized children aged 9 months to 18 years with serious gram-negative bacterial infections. About 48 participants will receive either the new drug or the best available standard treatment. The goal is to see how t…
Phase 2 • Sponsor: Pfizer • Aim: Disease control
Last updated Jul 03, 2026 00:00 UTC
-
New antibiotic cocktail aimed at Drug-Resistant infections in babies
Disease control Recruiting nowThis study tests a combination of two antibiotics, aztreonam and avibactam, in newborns and infants up to 9 months old who have serious infections caused by gram-negative bacteria. The trial has two parts: one to see how a single dose moves through the body, and another to test m…
Phase 2 • Sponsor: Pfizer • Aim: Disease control
Last updated Jun 27, 2026 13:07 UTC
-
New study tests best way to deliver antibiotic combo against superbugs
Disease control Recruiting nowThis study is testing two different ways of giving a combination of two antibiotics (ceftazidime-avibactam and aztreonam) to treat serious infections caused by bacteria that are resistant to many drugs. The researchers want to see if giving the drugs one after the other works as …
Phase 4 • Sponsor: Jing Zhou • Aim: Disease control
Last updated Jun 27, 2026 11:02 UTC
-
Could a simple pill replace IV drips for serious blood infections?
Disease control Recruiting nowThis study compares two ways to treat Gram-negative bloodstream infections: staying on IV antibiotics versus switching to oral pills early. Researchers want to see if the oral option works just as well but causes fewer side effects. About 1,030 hospitalized adults will take part,…
Sponsor: Johns Hopkins University • Aim: Disease control
Last updated Jun 27, 2026 11:00 UTC
-
Double antibiotic attack: could a Two-Drug combo beat severe infections faster?
Disease control Recruiting nowThis study tests whether adding a second antibiotic (fosfomycin) to the standard antibiotic (ceftazidime) helps people with severe gram-negative infections recover faster. About 100 hospitalized adults will be randomly assigned to get either the combo or the standard drug plus a …
Phase 3 • Sponsor: Angela HUTTNER • Aim: Disease control
Last updated Jun 27, 2026 07:51 UTC
-
Real-World watch: is zavicefta safe for tough infections?
Knowledge-focused Recruiting nowThis study observes 600 patients in Korea who receive Zavicefta for complicated abdominal or urinary tract infections or hospital-acquired pneumonia. Researchers track side effects and how well the drug works. It is required by Korean regulators to ensure the drug's safety after …
Sponsor: Pfizer • Aim: Knowledge-focused
Last updated Sep 10, 2026 00:00 UTC
-
A crystal ball for ICU infections? new model aims to forecast who survives resistant bacteria
Knowledge-focused Recruiting nowThis study aims to develop a predictive model for mortality in critically ill patients who carry multidrug-resistant gram-negative bacteria (MDR-GNB). Researchers will follow about 1,500 adults in intensive care units (ICUs) who are colonized with these bacteria, tracking their i…
Sponsor: Fundacion SEIMC-GESIDA • Aim: Knowledge-focused
Last updated Aug 08, 2026 00:03 UTC
-
Could shorter antibiotic courses be safer for blood cancer patients?
Knowledge-focused Recruiting nowThis study looks at whether blood cancer patients with a serious infection can safely stop antibiotics sooner if they are stable for 72 hours, instead of the usual 10-day course. About 172 adults will be randomly assigned to either a personalized short course or standard long cou…
Sponsor: Valeria Cento • Aim: Knowledge-focused
Last updated Jul 17, 2026 00:00 UTC
-
Can a rapid test help doctors pick the right antibiotic faster?
Knowledge-focused Recruiting nowThis study tests whether a rapid lab test can help doctors choose the right antibiotic sooner for patients with bloodstream infections. About 400 adults with positive blood cultures will be randomly assigned to either the rapid test or standard testing. The goal is to see if the …
Sponsor: Istituto Clinico Humanitas • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:03 UTC
-
Scientists seek best dose of Last-Resort antibiotics for superbug infections
Knowledge-focused Recruiting nowThis observational study is looking at how two antibiotics, ceftazidime/avibactam and fosfomycin, work in the body to treat infections caused by carbapenem-resistant Enterobacterales (CRE), a type of superbug. Researchers will monitor 60 adult patients to see if the drug levels i…
Sponsor: IRCCS Azienda Ospedaliero-Universitaria di Bologna • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:06 UTC
-
Burn patients needed for antibiotic dosing study
Knowledge-focused Recruiting nowThis study looks at how the antibiotic cefiderocol behaves in the bodies of people with severe burns. Researchers want to find the best dose to kill bacteria and prevent resistance. The study will enroll 12 adults with burns who have good kidney function.
Phase 4 • Sponsor: University of Tennessee • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:00 UTC
-
Which antibiotic wins against superbugs? new study aims to find out
Knowledge-focused Recruiting nowThis study compares two strong antibiotics, polymyxin B and colistin, in treating serious infections caused by bacteria that are resistant to many common drugs. Researchers will look at medical records of 480 adults with pneumonia or bloodstream infections to see which antibiotic…
Sponsor: TTY Biopharm • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:00 UTC