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Showing 1–24 of 34 matching trials from the live ClinicalTrials.gov search.
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Filters: Sponsor: Public Health Institute, California Clear all
Completed Not applicable Interventional Results available

Precision Vaccine Promotion in Underserved Populations

NCT05537441
View directory record Official record
Conditions
Influenza, Vaccine Hesitancy
Interventions
Text messaging
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
6 Months and older
Enrollment
228,831 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 30, 2024 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Phase 2 Interventional Results available

Vitamin E Dosing Study

NCT04801849
View directory record Official record
Conditions
Nonalcoholic Fatty Liver Disease, Nonalcoholic Steatohepatitis
Interventions
Vitamin E, Placebo
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
9
States / cities
La Jolla, California • Los Angeles, California • San Francisco, California + 6 more
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Phase 2 Interventional

Screening and Brief Intervention in the ED Among Mexican-origin Young Adults

NCT02056535
View directory record Official record
Conditions
Problem Drinking, Alcohol Dependence
Interventions
Brief Motivational Intervention
Behavioral
Lead sponsor
Public Health Institute, California
Other
Eligibility
18 Years to 30 Years
Enrollment
698 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Feb 5, 2014 · Synced Sep 1, 2026, 10:59 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Community Health Adaptation & Resilience Mobilization (CHARM) HeatWise

NCT07500545
View directory record Official record
Conditions
Heat Illness
Interventions
CHARM HeatWise
Behavioral
Lead sponsor
Public Health Institute, California
Other
Eligibility
18 Years and older
Enrollment
580 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Lakeport, California
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 1, 2026, 10:59 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Multidisciplinary Low-Barrier and Mobile HIV Care to Improve Retention and Viral Suppression: Stakeholder-Engaged Design and Evaluation

NCT05887557
View directory record Official record
Conditions
HIV
Interventions
Active Referral, Drop-In Multidisciplinary HIV Care, Mobile HIV Care, Staged Care, Identify and prepare champions at referral sites, Audit and feedback at referral sites, Build a coalition among referral and clinical sites, Assess for readiness and identify barriers, Promote adaptability, Develop a formal implementation blueprint, Develop educational materials; conduct ongoing training, Create a learning collaborative
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
15 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
5
States / cities
Oakland, California • San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

HOME Study: a Combination Support Package to Increase Uptake of PrEP and HIV/STI Testing

NCT03138135
View directory record Official record
Conditions
HIV Prevention, Sexually Transmitted Diseases, Pre-Exposure Prophylaxis
Interventions
HOME Study intervention, Control
Behavioral
Lead sponsor
Public Health Foundation Enterprises, Inc.
Other
Eligibility
18 Years to 35 Years · Male only
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2021 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Intensive Motivational Interviewing for Methamphetamine Dependence

NCT01071356
View directory record Official record
Conditions
Methamphetamine Dependence
Interventions
Intensive MI, Single session MI
Behavioral
Lead sponsor
Public Health Institute, California
Other
Eligibility
18 Years and older
Enrollment
217 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Emeryville, California
Source: ClinicalTrials.gov public record
Updated May 23, 2018 · Synced Sep 1, 2026, 10:59 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Healthy Relationships and Economic Pathways

NCT03519191
View directory record Official record
Conditions
Adolescent Relationship Abuse, Sexually Transmitted Infections, Pregnancy (Unwanted), Violence, Intentional Injury
Interventions
Healthy Relationships Education (HRE), HRE+Technology Bootcamp
Behavioral
Lead sponsor
Public Health Institute, California
Other
Eligibility
18 Years to 24 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Sep 12, 2019 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Randomized Evaluation of a Multi-Component, Rights-Based Sexuality Education Initiative for High School Students

NCT02009046
View directory record Official record
Conditions
Pregnancy, Sexually Transmitted Diseases
Interventions
SEI Classroom Curriculum, Control Classroom Curriculum, SEI Curriculum + 3 School Components, Control Curriculum + 1 School Component
Behavioral
Lead sponsor
Public Health Institute, California
Other
Eligibility
13 Years to 16 Years
Enrollment
1,909 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 28, 2018 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Climate Impact Label Design and Fast-Food Meal Selection

NCT06678178
View directory record Official record
Conditions
Food Selection
Interventions
Control (QR) Labels, Warning High Climate Impact Labels, Traffic Light Labels, Climate Grade Labels, Numeric Carbon Footprint Labels
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older
Enrollment
6,622 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 5, 2026 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Improving the HIV PrEP Cascade Using an Intervention for Healthcare Providers

NCT03532191
View directory record Official record
Conditions
HIV/AIDS
Interventions
PrEP Optimization Intervention (PrEP-OI)
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
Not listed
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 16, 2025 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Targeting Access and Knowledge of Earned Income Tax Credit (EITC) Utilization and Policies

NCT06146621
View directory record Official record
Conditions
Mental Health Issue, Food Security, Well-being
Interventions
Low-touch text messaging, Personal tax filing support, Information about free tax-filing support, Financial assistance
Behavioral
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
18 Years to 64 Years · Female only
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Aug 18, 2025 · Synced Sep 1, 2026, 10:59 PM EDT
Recruiting Not applicable Interventional

Dose-Response to Resistance Exercise on Cardiovascular Health

NCT06619444
View directory record Official record
Conditions
Cardiovascular Risk
Interventions
Aerobic exercise only, 30 min of resistance exercise, 60 min of resistance exercise, 120 min of resistance exercise
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
40 Years and older
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Results available

Promoting Breast Cancer Screening in Women Who Survived Childhood Cancer

NCT03435380
View directory record Official record
Conditions
Breast Neoplasms, Early Detection of Cancer
Interventions
Patient activation, Primary care physician activation, Control
Behavioral
Lead sponsor
Duke University
Other
Eligibility
25 Years and older · Female only
Enrollment
314 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
5
States / cities
New York, New York • Durham, North Carolina • Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 7, 2023 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Randomized Trial of Intensive Motivational Interviewing (IMI) to Improve Drinking Outcomes Among Women

NCT02272023
View directory record Official record
Conditions
Alcohol Use Disorders
Interventions
Intensive Motivational Interviewing, Single session of Motivational Interviewing
Behavioral
Lead sponsor
Public Health Institute, California
Other
Eligibility
18 Years and older · Female only
Enrollment
215 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Lafayette, California
Source: ClinicalTrials.gov public record
Updated Sep 17, 2019 · Synced Sep 1, 2026, 10:59 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Personalized HIV and STI Testing Tool

NCT03109899
View directory record Official record
Conditions
Risk Reduction, HIV, Sexually Transmitted Infections (Not HIV or Hepatitis)
Interventions
Sex Pro mobile Application
Behavioral
Lead sponsor
Public Health Foundation Enterprises, Inc.
Other
Eligibility
18 Years to 29 Years · Male only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 19, 2020 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Short-course Benznidazole Treatment to Reduce Trypanosoma Cruzi Parasitic Load in Women of Reproductive Age

NCT03672487
View directory record Official record
Conditions
Chagas Disease
Interventions
Benznidazole, Placebo Oral Tablet
Drug
Lead sponsor
Tulane University School of Public Health and Tropical Medicine
Other
Eligibility
13 Years and older · Female only
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
2
States / cities
San Diego, California • New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Computerized Tool for Preventing Prenatal Drinking

NCT02337361
View directory record Official record
Conditions
Foetal Exposure During Pregnancy
Interventions
Electronic SBI
Behavioral
Lead sponsor
Public Health Institute, California
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
185 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
2
States / cities
Oakland, California • Santa Rosa, California
Source: ClinicalTrials.gov public record
Updated Jan 24, 2019 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

HIV Rapid Testing & Counseling in Sexually Transmitted Disease (STD) Clinics in the U.S.

NCT01154296
View directory record Official record
Conditions
HIV/AIDS, Sexually Transmitted Infections
Interventions
RESPECT-2 Counseling
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
5,012 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
9
States / cities
Los Angeles, California • San Francisco, California • Washington D.C., District of Columbia + 6 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2014 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

LYNX: A Novel Mobile App to Support Linkage to HIV/STI Testing PrEP for Young Men Who Have Sex With Men

NCT03177512
View directory record Official record
Conditions
HIV, Sexually Transmitted Diseases, Risk Reduction, Pre-Exposure Prophylaxis
Interventions
LYNX Mobile App
Behavioral
Lead sponsor
Public Health Foundation Enterprises, Inc.
Other
Eligibility
15 Years to 24 Years · Male only
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
2
States / cities
Tampa, Florida • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 10, 2021 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Results available

Patient Portal Flu Vaccine Reminders_RCT 5 (LADHS)

NCT05535777
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Enhanced texts with Callback by a Person, Enhanced Bidirectional Texts
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months and older
Enrollment
246,295 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2025 · Synced Sep 1, 2026, 10:59 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Nutrition for Precision Health, Powered by the All of Us

NCT05701657
View directory record Official record
Conditions
Nutrition, Health, Dietary Habits
Interventions
Diet A, Diet B, Diet C
Other
Lead sponsor
RTI International
Other
Eligibility
18 Years and older
Enrollment
8,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
14
States / cities
Birmingham, Alabama • Davis, California • Los Angeles, California + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

MENU Study: Online Experiment

NCT06909019
View directory record Official record
Conditions
Food Selection
Interventions
Control (QR) Labels, Low Climate Impact Labels, High Climate Impact Labels, Traffic Light Labels, Climate Grade Labels
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older
Enrollment
6,294 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 28, 2025 · Synced Sep 1, 2026, 10:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reducing Offenders' HIV Risk: MI Enhanced Case Management With Drug-Free Housing

NCT01977092
View directory record Official record
Conditions
Alcohol and Drug Abuse
Interventions
Motivational interviewing case management, Resource referrals
Behavioral
Lead sponsor
Public Health Institute, California
Other
Eligibility
18 Years and older
Enrollment
330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Emeryville, California
Source: ClinicalTrials.gov public record
Updated Jul 16, 2018 · Synced Sep 1, 2026, 10:59 PM EDT