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Showing 1–24 of 1,266 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Infection Prophylaxis Clear all
Completed Not applicable Interventional

Rifabutin Therapy for the Prevention of Mycobacterium Avium Complex (MAC) Bacteremia in AIDS Patients With CD4 Counts = or < 200: A Double-Blind, Placebo-Controlled Trial

NCT00002032
View directory record Official record
Conditions
Mycobacterium Avium-intracellulare Infection, HIV Infections
Interventions
Rifabutin
Drug
Lead sponsor
Pharmacia
Industry
Eligibility
18 Years and older
Enrollment
750 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
33
States / cities
Irvine, California • Sylmar, California • Denver, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Not applicable Interventional

OPTIONS: A Patient-Centered HIV Prevention Decision Aid for PrEP Uptake for Women With Substance Use in Treatment Settings

NCT03651453
View directory record Official record
Conditions
HIV Infections, Substance Abuse
Interventions
Decision aid, Standard care
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years and older · Female only
Enrollment
164 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 27, 2021 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Phase 2 Interventional Results available

LSALT Peptide vs. Placebo to Prevent ARDS and Acute Kidney Injury in Patients Infected With SARS-CoV-2 (COVID-19)

NCT04402957
View directory record Official record
Conditions
COVID, Severe Acute Respiratory Syndrome, Sars-CoV2, Acute Kidney Injury, Acute Respiratory Distress Syndrome
Interventions
LSALT peptide, Placebo
Drug
Lead sponsor
Arch Biopartners Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
3
States / cities
San Diego, California • Fort Lauderdale, Florida • Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Jul 8, 2025 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Trial of Yellow Fever Inactivated Vaccine

NCT00995865
View directory record Official record
Conditions
Yellow Fever
Interventions
XRX-001 Inactivated yellow fever vaccine, Placebo
Biological
Lead sponsor
GE Healthcare
Industry
Eligibility
18 Years to 49 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated May 4, 2016 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Phase 1 Interventional Results available

HEPLISAV-B® in Adults With End-Stage Renal Disease (ESRD) Undergoing Hemodialysis

NCT03934736
View directory record Official record
Conditions
End Stage Renal Disease on Hemodialysis (Diagnosis)
Interventions
HEPLISAV-B®
Drug
Lead sponsor
Dynavax Technologies Corporation
Industry
Eligibility
18 Years and older
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
20
States / cities
Bloomfield, Connecticut • Middlebury, Connecticut • Hollywood, Florida + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2024 · Synced Jul 24, 2026, 12:08 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Bismuth Subsalicylate's Role in the Prevention of Travelers' Diarrhea

NCT03535272
View directory record Official record
Conditions
Diarrhea Travelers, Antibiotic Resistant Infection
Interventions
Bismuth subsalicylate, Placebo
Drug
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years to 69 Years
Enrollment
482 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

PrEP, Lube, and the Rectal Mucosa in MSM at Risk of HIV

NCT02401230
View directory record Official record
Conditions
HIV
Interventions
Truvada, Gel lubricant
Drug · Device
Lead sponsor
Emory University
Other
Eligibility
18 Years to 49 Years · Male only
Enrollment
86 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 18, 2018 · Synced Jul 24, 2026, 12:08 AM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

A Study to Evaluate Safety and Efficacy of TP-05 in Healthy Participants With Tick Exposure

NCT07562087
View directory record Official record
Conditions
Lyme Disease
Interventions
TP-05 (lotilaner) Low Dose, TP-05 (lotilaner) High Dose, Placebo
Drug
Lead sponsor
Tarsus Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
722 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
19
States / cities
Pikesville, Maryland • Brookline, Massachusetts • Fall River, Massachusetts + 16 more
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study in Healthy Adults Challenged With Enterotoxigenic E. Coli, of the Safety, Tolerability and Anti-Diarrheal Activity of VENBETA6890, an Orally Administered, Human Monoclonal IgA

NCT06896136
View directory record Official record
Conditions
Diarrhea Infectious
Interventions
VENBETA6890, Placebo
Drug
Lead sponsor
Mark Klempner
Other
Eligibility
18 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 21, 2025 · Synced Jul 24, 2026, 12:08 AM EDT
Completed No phase listed Observational

Pilot Study of Allergy Immunotherapy and Prevention of Viral Respiratory Infections

NCT00405899
View directory record Official record
Conditions
Allergy, Seasonal Allergic Rhinitis, Perennial Allergic Rhinitis
Interventions
Not listed
Lead sponsor
West Penn Allegheny Health System
Other
Eligibility
6 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 30, 2010 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Phase 4 Interventional

Effectiveness of Integrating Prenatal Care in Reducing HIV/STDs Among Young Pregnant Women

NCT00628771
View directory record Official record
Conditions
Pregnancy, HIV Infections, Sexually Transmitted Diseases
Interventions
CenteringPregnancy Plus (CP+), Usual care
Behavioral
Lead sponsor
Yale University
Other
Eligibility
14 Years to 21 Years · Female only
Enrollment
1,233 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
3
States / cities
New Haven, Connecticut • Boston, Massachusetts • New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 2, 2020 · Synced Jul 24, 2026, 12:08 AM EDT
Active, not recruiting Phase 1 Interventional

T-Lymphocytes for Prevention or Treatment of Viral Infections Following Hematopoietic Stem Cell Transplantation

NCT03180216
View directory record Official record
Conditions
Viral Infections, Bone Marrow Transplant Infection
Interventions
Virus Specific T cells (VSTs)
Biological
Lead sponsor
Children's National Research Institute
Other
Eligibility
Not listed
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Not applicable Interventional Results available

Standardized Patients to Measure and Address Intersectional Stigma

NCT04896216
View directory record Official record
Conditions
Hiv, HIV Infections, AIDS
Interventions
Stigma Reduction Intervention
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 99 Years
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 30, 2024 · Synced Jul 24, 2026, 12:08 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

A Study Evaluating MDX2301 in Healthy Adults and Adults at Higher Risk for Severe COVID-19.

NCT07445971
View directory record Official record
Conditions
COVID -19, COVID-19 (Prevention)
Interventions
MDX2301, Normal Saline
Biological
Lead sponsor
ModeX Therapeutics, An OPKO Health Company
Industry
Eligibility
18 Years to 64 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
2
States / cities
Las Vegas, Nevada • Austin, Texas
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Immunogenicity of Rabies Vaccine for Pre Exposure Prophylaxis

NCT02374814
View directory record Official record
Conditions
Rabies
Interventions
Rabies vaccine, Placebo
Drug
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Jun 12, 2022 · Synced Jul 24, 2026, 12:08 AM EDT
Recruiting Phase 2 Interventional

IVIG for Infection Prevention After CAR-T-Cell Therapy

NCT05952804
View directory record Official record
Conditions
Hematologic Malignancies
Interventions
Immune Globulin Infusion (Human), 10% Solution, Anti-CD19 CAR T Cells Preparation, Saline, Biospecimen Collection, Survey Administration, Electronic Health Record Review
Biological · Other · Procedure
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
7
States / cities
Duarte, California • Miami, Florida • Tampa, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2026 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Not applicable Interventional

The Effectiveness of Silver Alginate (Algidex) Patch in the Prevention of Central Line Infections in Very Low Birth Weight Infants

NCT00964093
View directory record Official record
Conditions
Central Line Bloodstream Infections
Interventions
Silver Alginate
Device
Lead sponsor
Baylor Research Institute
Other
Eligibility
1 Day to 3 Weeks
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Jul 24, 2026, 12:08 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Vacuum Assisted Closure for Cesarean Section

NCT02390401
View directory record Official record
Conditions
Surgical Wound Infection
Interventions
Vacuum-assisted closure, Standard sterile dressing
Device
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
166 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
4
States / cities
Lebanon, New Hampshire • Nashua, New Hampshire
Source: ClinicalTrials.gov public record
Updated May 21, 2018 · Synced Jul 24, 2026, 12:08 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

An mHealth Intervention to Improve HIV Prevention Service Engagement Among People Who Use Drugs

NCT06068283
View directory record Official record
Conditions
HIV Infections
Interventions
LOTUS mHealth Intervention Group
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Efficacy of MEDI8897 for the Prevention of Medically Attended Lower Respiratory Tract Infection Due to Respiratory Syncytial Virus in Healthy Late Preterm and Term Infants (MELODY)

NCT03979313
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
MEDI8897, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
0 Years to 1 Year
Enrollment
3,012 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
66
States / cities
Birmingham, Alabama • Fort Defiance, Arizona • Fayetteville, Arkansas + 59 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Jul 24, 2026, 12:08 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Efficacy Study of A Lotion to Prevent Common Colds

NCT00993759
View directory record Official record
Conditions
Common Cold, Healthy
Interventions
3804-250A
Drug
Lead sponsor
The Dial Corporation
Industry
Eligibility
18 Years to 40 Years
Enrollment
212 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 11, 2009 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Development and Evaluation of an HIV, STD, and Pregnancy Prevention Program for Middle School Students

NCT00161382
View directory record Official record
Conditions
HIV Infections, Sexually Transmitted Diseases, Pregnancy
Interventions
HIV, STD, and pregnancy prevention curriculum, Standard sexual education curriculum
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
11 Years to 16 Years
Enrollment
3,007 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 7, 2014 · Synced Jul 24, 2026, 12:08 AM EDT
Completed Phase 3 Interventional

Comparison of Anti-HIV Drug Combinations to Prevent Mother-to-Child Transmission of HIV

NCT00086359
View directory record Official record
Conditions
HIV Infections
Interventions
Abacavir sulfate, lamivudine, and zidovudine, Lamivudine/zidovudine, Lopinavir/ritonavir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older · Female only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
7
States / cities
Los Angeles, California • San Diego, California • Miami, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Jul 24, 2026, 12:08 AM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Study of Lenacapavir and Emtricitabine/Tenofovir Disoproxil Fumarate (F/TDF) in Prevention of HIV in Cisgender Women in the United States (HPTN 102)

NCT06101329
View directory record Official record
Conditions
Pre-Exposure Prophylaxis of HIV Infection
Interventions
Lenacapavir Tablet, Lenacapavir Injection, Emtricitabine/Tenofovir Disoproxil Fumarate (F/TDF)
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older · Female only
Enrollment
253 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
11
States / cities
Birmingham, Alabama • San Diego, California • Washington D.C., District of Columbia + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Jul 24, 2026, 12:08 AM EDT