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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Prevention of HIV Infection Clear all
Completed Phase 2 Interventional Accepts healthy volunteers

Effectiveness of Communication Technology in Disseminating HIV Prevention Training to Non-governmental Organizations

NCT00698529
View directory record Official record
Conditions
HIV Infections
Interventions
Face-to-face training, Distance training, Popular Opinion Leader (POL)
Behavioral
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
99 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2019
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 10, 2019 · Synced Jul 23, 2026, 6:29 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Testing a Gender-inclusive HIV Prevention Program

NCT06586151
View directory record Official record
Conditions
HIV Prevention
Interventions
Transcendent Health, Text Messaging with Information
Behavioral
Lead sponsor
Center for Innovative Public Health Research
Other
Eligibility
14 Years to 18 Years · Male only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
San Clemente, California
Source: ClinicalTrials.gov public record
Updated Dec 7, 2025 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

HIV Prevention Intervention for Young Transgender Women

NCT01575938
View directory record Official record
Conditions
Sexual Transmission of Infection
Interventions
HIV prevention intervention, Diet and Nutrition
Behavioral
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
16 Years to 29 Years · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
2
States / cities
Chicago, Illinois • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug-Drug Interaction Study of MK 8527 With a Combined Oral Contraceptive (LNG/EE)

NCT06783192
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV), HIV Pre-Exposure Prophylaxis
Interventions
MK-8527, LNG/EE
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 70 Years · Female only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
South Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 19, 2025 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Phase 4 Interventional Results available

A Demonstration Project to Add Pre- or Post-exposure Prophylaxis to Combination HIV Prevention Services

NCT01781806
View directory record Official record
Conditions
HIV Prevention
Interventions
emtricitabine 200mg/tenofovir 300mg
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older · Male only
Enrollment
328 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 5, 2018 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy Trial of Life Simulation Game to Routinize Adolescent HIV Testing

NCT04917575
View directory record Official record
Conditions
Hiv
Interventions
Mobile Game, Mobile Application
Other
Lead sponsor
George Washington University
Other
Eligibility
13 Years to 24 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 12, 2025 · Synced Jul 23, 2026, 6:29 PM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

Evaluating the Safety and Immunogenicity of Polyvalent DNA and Recombinant gp120 Protein HIV Vaccine (PDPHV) in Healthy, HIV-uninfected Adults

NCT07675629
View directory record Official record
Conditions
HIV Prevention
Interventions
PDPHV Plasmid DNA Vaccines (env (A, B, C, A/E)/gag (C)), PDPHV Recombinant Protein Vaccines (gp120 (A, B, C, A/E)), Alhydrogel adjuvant, GLA-SE adjuvant, Placebo for DNA Vaccines, Protein Vaccines and Adjuvants
Biological
Lead sponsor
Worcester HIV Vaccine
Industry
Eligibility
18 Years to 55 Years
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Addressing Health Disparities in Engagement, Retention, and Utilization of PrEP Among South Florida Women of Color

NCT05338996
View directory record Official record
Conditions
HIV Prevention, PrEP Adherence
Interventions
iENGAGE for PrEP
Behavioral
Lead sponsor
Florida International University
Other
Eligibility
18 Years and older · Female only
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
3
States / cities
Miami, Florida • West Palm Beach, Florida
Source: ClinicalTrials.gov public record
Updated Jun 26, 2023 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Botswana TDF/FTC Oral HIV Prophylaxis Trial

NCT00448669
View directory record Official record
Conditions
HIV Infections
Interventions
Tenofovir Disoproxil Fumarate 300 mg + Emtricitabine 200 mg, Placebo Oral Tablet
Drug
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years to 39 Years
Enrollment
1,219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Compare Three Different Formulations of Tenofovir 1% Gel When Administered Rectally

NCT01575405
View directory record Official record
Conditions
HIV Prevention
Interventions
Rectal formulation (RF) of tenofovir 1% gel, Vaginal formulations (original VF and reduced vaginal glycerin formulation RGVF) of tenofovir 1% gel, Universal HEC Placebo Gel Formulation
Drug
Lead sponsor
Ian McGowan
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
2
States / cities
Los Angeles, California • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 6, 2013 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Not applicable Interventional

Multicenter Comparison of Fluconazole (UK-49,858) and Amphotericin B as Maintenance Treatment for the Prevention of Relapse of Cryptococcal Meningitis in Patients With Acquired Immunodeficiency Syndrome

NCT00002074
View directory record Official record
Conditions
Meningitis, Cryptococcal, HIV Infections
Interventions
Fluconazole, Amphotericin B
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
38
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 28 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 23, 2026, 6:29 PM EDT
Recruiting Not applicable Interventional

Assessing the Use of MY-RIDE, a Just-in-time Adaptive Intervention, to Improve HIV Prevention and Substance Use in Youth Experiencing Homelessness

NCT06074354
View directory record Official record
Conditions
HIV Infections
Interventions
Attention-control group, MY-RIDE group
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 25 Years
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Jul 23, 2026, 6:29 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Predictors of Health Service Utilizations Among Key Population in Washington DC

NCT06046079
View directory record Official record
Conditions
Pre-exposure Prophylaxis, HIV, Health Behavior
Interventions
Not listed
Lead sponsor
Us Helping Us, People Into Living, Inc.
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Mar 9, 2025 · Synced Jul 23, 2026, 6:29 PM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Botswana Study of UC-781 Vaginal Microbicide

NCT00385554
View directory record Official record
Conditions
HIV Infections
Interventions
UC-781 carbomer gel, 0.1% and 0.25%
Drug
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
21 Years to 45 Years
Healthy volunteers
Accepts healthy volunteers
U.S. locations
2
States / cities
Atlanta, Georgia • Arlington, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 15, 2012 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Optimizing PrEP Utilization Among Alcohol and Other Drug (AOD) Using Women of Color

NCT04018651
View directory record Official record
Conditions
HIV Prevention
Interventions
PrEP Master Adherence Intervention
Behavioral
Lead sponsor
Florida International University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
North Miami, Florida
Source: ClinicalTrials.gov public record
Updated Sep 12, 2023 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Not applicable Interventional

A Randomized Prospective Study of Pyrimethamine Therapy for Prevention of Toxoplasmic Encephalitis in HIV-Infected Individuals With Serologic Evidence of Latent Toxoplasma Gondii Infection

NCT00000666
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Pyrimethamine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1992
U.S. locations
16
States / cities
San Francisco, California • Denver, Colorado • New Haven, Connecticut + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2012 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Aripiprazole for Prevention of Relapse to Cocaine Use in Methadone-Maintenance Patients

NCT00780702
View directory record Official record
Conditions
Cocaine Dependence, Cocaine-Related Disorders, Opioid-Related Disorders
Interventions
Airipiprazole, Placebo
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 60 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 15, 2019 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Life Steps for PrEP for Youth

NCT03805451
View directory record Official record
Conditions
HIV, Pre-exposure Prophylaxis, Medication Adherence
Interventions
Life Steps for PrEP for Youth
Behavioral
Lead sponsor
Fenway Community Health
Other
Eligibility
16 Years to 24 Years · Male only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
3
States / cities
Atlanta, Georgia • Chicago, Illinois • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 21, 2023 · Synced Jul 23, 2026, 6:29 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Comparing Mobile Health Strategies to Improve Pre-exposure Prophylaxis Use (PrEP) for HIV Prevention

NCT04855773
View directory record Official record
Conditions
HIV Infections, Sexually Transmitted Diseases
Interventions
PrEPmate, Dot Diary
Other · Device
Lead sponsor
Public Health Foundation Enterprises, Inc.
Other
Eligibility
15 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
4
States / cities
San Francisco, California • Washington D.C., District of Columbia • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Sep 27, 2022 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Not applicable Interventional

Antiretroviral Therapy Adherence and Secondary Prevention of Human Immunodeficiency Virus

NCT01760759
View directory record Official record
Conditions
HIV
Interventions
cell phone reminders, contingency management for adherence
Behavioral
Lead sponsor
UConn Health
Other
Eligibility
18 Years and older
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
2
States / cities
Farmington, Connecticut • New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 12, 2019 · Synced Jul 23, 2026, 6:29 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

PK and PD Study of Oral F/TAF for HIV Prevention

NCT02904369
View directory record Official record
Conditions
HIV
Interventions
Emtricitabine, Tenofovir alafenamide, Tenofovir disoproxil
Drug
Lead sponsor
CONRAD
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 18, 2018 · Synced Jul 23, 2026, 6:29 PM EDT
Enrolling by invitation Not applicable Interventional

Addressing Psychosocial Comorbidities in HIV Treatment and Prevention 2b

NCT05352061
View directory record Official record
Conditions
Medication Adherence, Mental Health Issue
Interventions
CBT for Syndemics and Adherence Factors
Behavioral
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Jul 23, 2026, 6:29 PM EDT
Suspended No phase listed Observational Accepts healthy volunteers

HIV/STD Risk and PrEP Implementation Messaging Among Gay, Bisexual, and Other Men Who Have Sex With Men

NCT06183502
View directory record Official record
Conditions
Sexually Transmitted Infections, Gay, Pre Exposure Prophylaxis
Interventions
Quantitative survey, HIV and STI testing, Qualitative Assessment
Behavioral · Procedure
Lead sponsor
Emory University
Other
Eligibility
18 Years and older · Male only
Enrollment
1,275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
3
States / cities
San Diego, California • Atlanta, Georgia • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 1, 2025 · Synced Jul 23, 2026, 6:29 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

HIV Pre-Exposure Prophylaxis Among an Unrecognized Sexual Minority Population

NCT05815030
View directory record Official record
Conditions
Pre-Exposure Prophylaxis
Interventions
video informational/educational intervention
Other
Lead sponsor
The Alternative Sexualities Health Research Alliance
Other
Eligibility
18 Years and older
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Rio Vista, California
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Jul 23, 2026, 6:29 PM EDT