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Showing 1–24 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Drug Resistance, Microbial Clear all
Completed Phase 3 Interventional

New Antibiotic to Treat Pediatric Patients With Infections Due to a Specific Bacteria (Vancomycin-Resistant Enterococcus)

NCT00035854
View directory record Official record
Conditions
Bacterial Infections
Interventions
Zyvox® / Linezolid
Drug
Lead sponsor
Pfizer
Industry
Eligibility
Up to 17 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
21
States / cities
Long Beach, California • Los Angeles, California • Hartford, Connecticut + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2009 · Synced Jul 21, 2026, 4:05 PM EDT
Completed Not applicable Interventional

A Study to Evaluate the Effects of Azithromycin on MAC Disease Prevention in HIV-Positive Patients

NCT00000947
View directory record Official record
Conditions
Mycobacterium Avium-intracellulare Infection, HIV Infections
Interventions
Azithromycin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2000
U.S. locations
19
States / cities
San Francisco, California • Denver, Colorado • Washington D.C., District of Columbia + 11 more
Source: ClinicalTrials.gov public record
Updated Nov 2, 2021 · Synced Jul 21, 2026, 4:05 PM EDT
Completed Not applicable Interventional Results available

Efficacy Study on Silver-coated ETT Cleaned With a Novel Device

NCT02120001
View directory record Official record
Conditions
Ventilator Associated Pneumonia, Critically Ill
Interventions
ETT cleaning maneuver
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 18, 2017 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

Resistance to Antibiotics in Patients Receiving Eye Injections

NCT02126423
View directory record Official record
Conditions
Age-Related Macular Degeneration, Retinal Vein Occlusion, Diabetic Retinopathy
Interventions
Conjunctival and nasopharyngeal swabs
Other
Lead sponsor
Prism Vision Group
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Edison, New Jersey
Source: ClinicalTrials.gov public record
Updated May 31, 2016 · Synced Jul 21, 2026, 4:05 PM EDT
Completed Not applicable Interventional

A Prospective Study of Multidrug Resistance and a Pilot Study of the Safety of and Clinical and Microbiologic Response to Levofloxacin in Combination With Other Antimycobacterial Drugs for Treatment of Multidrug-Resistant Pulmonary Tuberculosis (MDRTB) in HIV-Infected Patients.

NCT00000796
View directory record Official record
Conditions
HIV Infections, Tuberculosis
Interventions
Cycloserine, Ethionamide, Capreomycin sulfate, Aminosalicylic acid, Streptomycin sulfate, Ethambutol hydrochloride, Amikacin sulfate, Isoniazid, Pyrazinamide, Pyridoxine hydrochloride, Levofloxacin, Rifampin, Clofazimine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
525 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1998
U.S. locations
21
States / cities
Chicago, Illinois • Detroit, Michigan • Brooklyn, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 2, 2021 · Synced Jul 21, 2026, 4:05 PM EDT
Completed Phase 2 Interventional

A Comparison of Adefovir and Tenofovir for the Treatment of Lamivudine-Resistant Hepatitis B Virus in People With HIV

NCT00033163
View directory record Official record
Conditions
HIV Infections, Hepatitis B
Interventions
Adefovir dipivoxil, Tenofovir disoproxil fumarate
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2005
U.S. locations
15
States / cities
Sacramento, California • San Francisco, California • Aurora, Colorado + 7 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

A Registry of Tuberculosis Cases in the CPCRA

NCT00000785
View directory record Official record
Conditions
HIV Infections, Tuberculosis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
1 Day and older
Enrollment
1,509 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1992 – 1994
U.S. locations
13
States / cities
Denver, Colorado • Washington D.C., District of Columbia • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2013 · Synced Jul 21, 2026, 4:05 PM EDT
Withdrawn Phase 3 Interventional

Salvage Treatment, Resistance Testing, and Withdrawal of Anti-HIV Drugs for HIV Patients Failing Current Anti-HIV Treatment

NCT00011128
View directory record Official record
Conditions
HIV Infections
Interventions
Antiretroviral Treatment Interruption
Behavioral
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
29
States / cities
Birmingham, Alabama • Los Angeles, California • Menlo Park, California + 17 more
Source: ClinicalTrials.gov public record
Updated May 17, 2015 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

A Study of the Long-Term Outcomes of HIV-Positive Patients

NCT00000932
View directory record Official record
Conditions
HIV Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
3,669 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2006
U.S. locations
91
States / cities
Mill Valley, California • Oakland, California • San Francisco, California + 31 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2014 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

A Pilot Study of the Short-Term Effects of Antiretroviral Management Based on Plasma Genotypic Antiretroviral Resistance Testing (GART) Compared With Antiretroviral Management Without Plasma GART

NCT00000874
View directory record Official record
Conditions
HIV Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 1999
U.S. locations
24
States / cities
San Francisco, California • Denver, Colorado • Washington D.C., District of Columbia + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2013 · Synced Jul 21, 2026, 4:05 PM EDT
Completed Phase 3 Interventional

A Study of Three Different Anti-HIV Drug Combinations in HIV-Infected Patients

NCT00002410
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Lamivudine, Zidovudine
Drug
Lead sponsor
Dupont Merck
Industry
Eligibility
13 Years to 60 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
40
States / cities
Phoenix, Arizona • Tucson, Arizona • Beverly Hills, California + 30 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 21, 2026, 4:05 PM EDT
Completed Phase 3 Interventional

T-20 With Anti-HIV Combination Therapy for Patients With Prior Anti-HIV Drug Treatment and/or Drug Resistance to Each of the Three Classes of Approved Anti-HIV Drugs

NCT00008528
View directory record Official record
Conditions
HIV Infections
Interventions
Enfuvirtide
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
16 Years and older
Enrollment
525 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
34
States / cities
Birmingham, Alabama • Phoenix, Arizona • Beverly Hills, California + 27 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

A Study of HIV in Newly Infected Individuals

NCT00000930
View directory record Official record
Conditions
HIV Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2008
U.S. locations
12
States / cities
Los Angeles, California • San Francisco, California • Denver, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 6, 2016 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

Clinical and Microbiological Outcomes of Infections Due to Carbapenem-Resistant Gram-Negative Bacteria

NCT01041716
View directory record Official record
Conditions
Drug Resistance, Microbial
Interventions
None - Observational study
Other
Lead sponsor
Maimonides Medical Center
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Aug 18, 2011 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

Prevalence of Multidrug Resistant Micro-organism Carriage in Patients Undergoing an ERCP in Four Different Countries

NCT05303662
View directory record Official record
Conditions
Drug Resistance, Multiple, Bacterial, Cholangiopancreatography, Endoscopic Retrograde
Interventions
Multidrug-Resistant Organisms (MDRO) testing through rectal and oral/nasal swabs, MDRO-testing duodenal aspirate, Microbiome through rectal swab, Microbiome testing duodenal aspirate
Diagnostic Test
Lead sponsor
Marco J. Bruno
Other
Eligibility
18 Years and older
Enrollment
1,244 participants
Timeline
2022 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

Effects of MAC Preventive Therapy on Disease-Causing Bacteria in HIV-Infected Patients: A Substudy of CPCRA 048

NCT00000933
View directory record Official record
Conditions
Mycobacterium Avium-intracellulare Infection, HIV Infections, Pneumococcal Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
326 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2000
U.S. locations
15
States / cities
San Francisco, California • Denver, Colorado • Washington D.C., District of Columbia + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Jul 21, 2026, 4:05 PM EDT
Completed Phase 2 Interventional

A Study to Demonstrate That Anti-HIV Drug Therapy Can be Stopped Without Causing Viral Resistance, and to Characterize Drug Elimination From the Body

NCT00029341
View directory record Official record
Conditions
HIV Infections
Interventions
Treatment Interruption
Behavioral
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
7
States / cities
San Francisco, California • Denver, Colorado • Cincinnati, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2008 · Synced Jul 21, 2026, 4:05 PM EDT
Active, not recruiting No phase listed Observational

Cefiderocol vs Best Available Therapy for Carbapenem-resistant Acinetobacter Baumannii-calcoaceticus Complex Infections: A Target Trial Emulation

NCT07226557
View directory record Official record
Conditions
Carbapenem Resistant Bacterial Infection, Acinetobacter Baumannii Infection, Antimicrobial Drug Resistance
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 100 Years
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

A Comparison of Two Tests for Anti-HIV Drug Resistance

NCT00006490
View directory record Official record
Conditions
HIV Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
14 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
46
States / cities
Birmingham, Alabama • Los Angeles, California • Menlo Park, California + 27 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2008 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

Study of Perinatal Transmission of Zidovudine-Resistant HIV Among Pregnant Women Treated With Zidovudine

NCT00000828
View directory record Official record
Conditions
HIV Infections, Pregnancy
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years to 60 Years · Female only
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
28
States / cities
Birmingham, Alabama • La Jolla, California • Long Beach, California + 17 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 21, 2026, 4:05 PM EDT
Completed Phase 3 Interventional

A Phase III Randomized Double-Blind, Multicenter Study to Evaluate the Safety and Efficacy of 3TC/ZDV/1592U89 and 3TC/ZDV/IDV in HIV-1 Infected Antiretroviral Therapy-Naive Subjects.

NCT00002199
View directory record Official record
Conditions
HIV Infections
Interventions
Indinavir sulfate, Lamivudine/Zidovudine, Abacavir sulfate
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
16 Years and older
Enrollment
550 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 21, 2026, 4:05 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Dynamics of Colonization and Infection by Multidrug-Resistant Pathogens in Immunocompromised and Critically Ill Patients

NCT06258551
View directory record Official record
Conditions
Antimicrobial Drug Resistance, Antibiotic Resistant Infection, Clostridium Difficile, Carbapenem-Resistant Enterobacteriaceae Infection, Extended Spectrum Beta-Lactamase Producing Bacteria Infection, Vancomycin Resistant Enterococci Infection, Carbapenem Resistant Bacterial Infection, Vancomycin-Resistant Enterococcal Infection
Interventions
Not listed
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 13, 2024 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational

A Comparison of Two Anti-HIV Treatment Plans

NCT00005915
View directory record Official record
Conditions
HIV Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
480 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2004
U.S. locations
21
States / cities
San Francisco, California • Denver, Colorado • New Haven, Connecticut + 12 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2013 · Synced Jul 21, 2026, 4:05 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Biology of HIV Transmission

NCT00001092
View directory record Official record
Conditions
HIV Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2008
U.S. locations
3
States / cities
Los Angeles, California • San Diego, California • San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 21, 2015 · Synced Jul 21, 2026, 4:05 PM EDT