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Showing 1–24 of 66 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Bacterial Colonization Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Retapamulin Ointment in Healthy Adults Nasally Colonized With Staphylococcus Aureus

NCT00539994
View directory record Official record
Conditions
Infections, Bacterial
Interventions
Retapamulin, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
4
States / cities
San Diego, California • Honolulu, Hawaii • Baltimore, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 14, 2016 · Synced Sep 2, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bacterial Contamination of Workwear

NCT01192841
View directory record Official record
Conditions
Bacterial Contamination of Physician Attire
Interventions
Physician uniform
Other
Lead sponsor
Denver Health and Hospital Authority
Other
Eligibility
Not listed
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 31, 2010 · Synced Sep 2, 2026, 8:23 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Volatile Organic Compounds in Staphylococcus Aureus Patients

NCT01379053
View directory record Official record
Conditions
Staphylococcus Aureus, Methicillin-resistant Staphylococcus Aureus, Nosocomial Disease
Interventions
Not listed
Lead sponsor
Landon Pediatric Foundation
Other
Eligibility
1 Year to 85 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Aug 12, 2014 · Synced Sep 2, 2026, 8:23 AM EDT
Recruiting Phase 2 Interventional

Further MT for Antibiotic-Resistant Bacterial Colonization

NCT05835206
View directory record Official record
Conditions
Intestinal Multi-drug Resistant Organism Colonization
Interventions
Microbiome Therapeutic, Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
6
States / cities
Atlanta, Georgia • Johns Creek, Georgia
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 2, 2026, 8:23 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Detection of Staph Colonization in Pre-op Arthroplasty Patients

NCT01648088
View directory record Official record
Conditions
Surgical Site Infection
Interventions
Not listed
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 4, 2023 · Synced Sep 2, 2026, 8:23 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Mouthrinse on the Microbiome of the Oral Cavity and GI Tract

NCT05603650
View directory record Official record
Conditions
Oral Bacterial Infection, Oral Infection, Microbial Colonization, Viral Infection
Interventions
Lumineux Oral Essentials rinse, Listerine rinse
Other
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Sep 2, 2026, 8:23 AM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Mupirocin in Eradicating Colonization With S. Aureus in Critically Ill Infants

NCT01827358
View directory record Official record
Conditions
Staphylococcal Infection
Interventions
Mupirocin calcium
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Up to 24 Months
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
6
States / cities
Atlanta, Georgia • Baltimore, Maryland • Kansas City, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2017 · Synced Sep 2, 2026, 8:23 AM EDT
Completed Phase 3 Interventional

Safety and Efficacy Study of Angiotech Central Venous Catheter to Prevent Bacterial Catheter Colonization

NCT00288418
View directory record Official record
Conditions
Bacterial Infections
Interventions
Central Venous Catheter
Device
Lead sponsor
Angiotech Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
960 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
21
States / cities
Birmingham, Alabama • Orange, California • San Diego, California + 17 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2013 · Synced Sep 2, 2026, 8:23 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study of the Composition of Dental Plaque

NCT00001726
View directory record Official record
Conditions
Dental Caries, Dental Plaque, Periodontal Disease
Interventions
Not listed
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 2, 2026, 8:23 AM EDT
Completed Not applicable Interventional

Specific Carbohydrate Diet for Clostridium Difficile

NCT03925636
View directory record Official record
Conditions
Clostridium Difficile Infection, Diet Modification
Interventions
Specific Carbohydrate Diet
Dietary Supplement
Lead sponsor
David Suskind
Other
Eligibility
18 Months to 21 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 10, 2022 · Synced Sep 2, 2026, 8:23 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Colonization, Infection, and Molecular Typing of Methicillin-Resistant Staphylococcus Aureus (MRSA) in Children.

NCT00254527
View directory record Official record
Conditions
Methicillin Resistance, Staphylococcus Aureus
Interventions
Not listed
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
3 Months to 12 Years
Enrollment
477 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated May 1, 2007 · Synced Sep 2, 2026, 8:23 AM EDT
Withdrawn Phase 4 Interventional

Fidaxomicin to Prevent Clostridium Difficile Colonization

NCT01552668
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Fidaxomicin, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 27, 2014 · Synced Sep 2, 2026, 8:23 AM EDT
Withdrawn No phase listed Observational

Reduced Ventilator-Free Days and Bacterial Colonization of Sub-Glottic Secretions

NCT02311296
View directory record Official record
Conditions
Pneumonia
Interventions
Not listed
Lead sponsor
University of Tennessee, Chattanooga
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 24, 2020 · Synced Sep 2, 2026, 8:23 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Nontypeable H. Influenzae in Healthy Adults

NCT00905385
View directory record Official record
Conditions
Haemophilus Influenzae (NTHI)
Interventions
NTHi Strain 2019
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 54 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Apr 10, 2013 · Synced Sep 2, 2026, 8:23 AM EDT
Terminated Not applicable Interventional Results available

Asymptomatic Colonization With S. Aureus After Therapy With Linezolid or Clindamycin for Acute Skin Infections

NCT01619410
View directory record Official record
Conditions
Skin Diseases, Bacterial, Abscess
Interventions
Linezolid, Clindamycin
Biological
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
2
States / cities
Atlanta, Georgia • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 7, 2019 · Synced Sep 2, 2026, 8:23 AM EDT
Completed Early Phase 1 Interventional

Impact of Clinician-administered Vaginal Live Biotherapeutic Product

NCT07305844
View directory record Official record
Conditions
Bacterial Vaginosis
Interventions
LC106
Drug
Lead sponsor
Caroline Mitchell
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 2, 2026, 8:23 AM EDT
Not listed Phase 4 Interventional

Study on the Reapplication of Chloraprep After Lower Extremity Surgery and Prior to Dressing Application

NCT02017145
View directory record Official record
Conditions
Lower Extremity Surgery, Surgical Site Infection, Bacterial Colonization, Surgical Antiseptic
Interventions
Chloraprep
Drug
Lead sponsor
Sanford Health
Other
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2014
U.S. locations
1
States / cities
Sioux Falls, South Dakota
Source: ClinicalTrials.gov public record
Updated Feb 18, 2014 · Synced Sep 2, 2026, 8:23 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Mechanisms of Impaired HIV-associated B Cell and Pneumococcal Vaccine Responses

NCT02012309
View directory record Official record
Conditions
HIV, Pneumococcal Infections, Pneumococcal Vaccines
Interventions
PCV-13, PPSV-23
Biological
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2021
U.S. locations
3
States / cities
Aurora, Colorado • Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 17, 2020 · Synced Sep 2, 2026, 8:23 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Administering NMT to Reestablish Infant Nasal Microbiome Diversity Following Intranasal Mupirocin Treatment

NCT06805994
View directory record Official record
Conditions
Staphylococcal Aureus Infection, Microbial Colonization, Pediatric Infection, S. Aureus Colonization, Microbial Transplant
Interventions
Nasal Microbiota Transplant (NMT), Placebo
Biological
Lead sponsor
Johns Hopkins University
Other
Eligibility
0 Years to 60 Years
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 2, 2026, 8:23 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Immunologic Predisposition of HIV Patients to Develop Methicillin-Resistant Staphylococcus Aureus (MRSA) Colonization and Infection

NCT00859677
View directory record Official record
Conditions
HIV Infections, Staphylococcal Infections
Interventions
Not listed
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2016
U.S. locations
2
States / cities
San Diego, California • Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 14, 2023 · Synced Sep 2, 2026, 8:23 AM EDT
Completed Phase 1 Interventional Results available

Effect of Medium Chain Triglyceride Intake on Colonization of Preterm Infants With Candida

NCT03630770
View directory record Official record
Conditions
Candida Infection, Premature Infant
Interventions
Medium-Chain Triglyceride (MCT) Oil
Drug
Lead sponsor
Joseph Bliss
Other
Eligibility
Up to 6 Months
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jun 13, 2022 · Synced Sep 2, 2026, 8:23 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Collection of Dental Plaque and Saliva for Studies of Bacterial Colonization of Teeth

NCT00098267
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
3 Months and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 2, 2026, 8:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Prospective Cohort Pilot Study of the Clinical and Molecular Epidemiology of Staphylococcus Aureus in Pregnant Women at the Time of Group B Streptococcal Screening in a Large Urban Medical Center in Chicago, IL USA

NCT00532324
View directory record Official record
Conditions
Staphylococcus Aureus
Interventions
CA-MRSA Decolonization
Other
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
Female only
Enrollment
107 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 27, 2025 · Synced Sep 2, 2026, 8:23 AM EDT
Completed No phase listed Observational

Non-Interventional Extension to Investigate Recurrence of Vulvovaginal Candidiasis and Candida Colonization

NCT02888197
View directory record Official record
Conditions
Candidiasis, Vulvovaginal, Yeast Infection, Mycoses, Moniliasis, Vulvovaginal, Vaginitis, Monilial
Interventions
Not listed
Lead sponsor
Cidara Therapeutics Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years and older · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
23
States / cities
Phoenix, Arizona • Little Rock, Arkansas • San Diego, California + 18 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2018 · Synced Sep 2, 2026, 8:23 AM EDT