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Showing 1–24 of 119 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: CHLAMYDIA INFECTIONS Clear all
Completed No phase listed Observational Accepts healthy volunteers

Antigen-Specific Cell Mediated Immune Response to Chlamydia Trachomatis

NCT00970749
View directory record Official record
Conditions
Chlamydia
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
15 Years to 35 Years · Female only
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Protecting Our Future Generation: Promotion of Protective Sexual Health Practices Among Native American Youth and Young Adults Through an Assets-based Self-care Intervention

NCT03895320
View directory record Official record
Conditions
Sexual Behavior, Unprotected Sex, Gonorrhea, Chlamydia, Trichomonas, Sexually Transmitted Diseases, Adolescent Behavior, Self Evaluation
Interventions
Sexual Health Risk Assessment, Sexual Health Score, Sexual Health Messaging, Water SSB Quiz, Water SSB Score, Water SSB Messaging, STI Screening
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
14 Years to 26 Years
Enrollment
219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Whiteriver, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 22, 2024 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Evaluation of EVO100 for Prevention of Urogenital Chlamydia Trachomatis and Neisseria Gonorrhoeae Infection

NCT04553068
View directory record Official record
Conditions
Sexually Transmitted Diseases, Gonorrhea, Chlamydia
Interventions
EVO100, Placebo
Drug
Lead sponsor
Evofem Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
1,892 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
98
States / cities
Birmingham, Alabama • Mobile, Alabama • Mesa, Arizona + 71 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2024 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Trial of an Adapted STD Screening and Risk Reduction Intervention

NCT02513225
View directory record Official record
Conditions
Alcohol Use, Drug Use, Diagnostic Self Evaluation, Gonorrhea, Unprotected Sex, Chlamydia, Trichomonas
Interventions
Project EMPWR, Optimized Standard Care (OSC)
Behavioral · Other
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 49 Years
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Fort Apache, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 26, 2023 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safer Sex Program for Young African-American Men

NCT01439503
View directory record Official record
Conditions
Gonorrhea, Chlamydia, Trichomoniasis, Syphilis, HIV Infections
Interventions
Intervention
Behavioral
Lead sponsor
Richard Crosby
Other
Eligibility
15 Years to 29 Years · Male only
Enrollment
620 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Feb 20, 2019 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Adolescent Sexually Transmitted Infection Screening in the Emergency Department

NCT03715335
View directory record Official record
Conditions
Gonorrhea, Chlamydia
Interventions
Targeted STI Screening, Universally Offered STI Screening
Other
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
15 Years to 21 Years
Enrollment
98,413 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
5
States / cities
Aurora, Colorado • Columbus, Ohio • Philadelphia, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Check it: A New Approach to Controlling Chlamydia Transmission in Young People

NCT03098329
View directory record Official record
Conditions
Chlamydia Trachomatis Infection, Gonorrhea
Interventions
Ct/GC screening
Other
Lead sponsor
Tulane University
Other
Eligibility
15 Years to 26 Years · Male only
Enrollment
1,907 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 22, 2021 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Non-Invasive Sexually Transmitted Disease Testing in Women Seeking Emergency Contraception or Urine Pregnancy Testing

NCT00978848
View directory record Official record
Conditions
Trichomonas Vaginitis, Chlamydia Trachomatis, Neisseria Gonorrhoeae Infection
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
15 Years and older · Female only
Enrollment
305 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 17, 2016 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cepheid Rectal Sample Validation Study

NCT02099760
View directory record Official record
Conditions
Gonorrhea, Chlamydia, Trichomonas
Interventions
STD testing (GC/Ct/trich)
Device
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
402 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 6, 2019 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Results available

A Study of the Cobas® Liat CT/NG/MG Test Versus Current Standard Practice for Managing Participants at Increased Risk of Sexually Transmitted Infections

NCT06369220
View directory record Official record
Conditions
Chlamydia Trachomatis Infection, Neisseria Gonorrhoeae Infection, Mycoplasma Genitalium Infection
Interventions
cobas® liat CT/NG/MG nucleic acid test, Standard of Care (SOC): Clinician's Standard Practice
Diagnostic Test · Other
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
331 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
4
States / cities
San Francisco, California • Hamilton Square, New Jersey • Perth Amboy, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Jul 22, 2026, 11:02 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Comparing Specimen Collection Techniques to Screen for Sexually Transmitted Infections in Pregnant Women: A Pilot Study

NCT03877263
View directory record Official record
Conditions
Sexually Transmitted Diseases
Interventions
Endocervical swab for detection of STI, Vaginal swab for detection of STI
Diagnostic Test
Lead sponsor
OhioHealth
Other
Eligibility
16 Years and older · Female only
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 4, 2021 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Phase 1Phase 2 Interventional

The Participant Agreement for Contact Tracing (PACT) Study: Enhancing Partner Notification Services.

NCT00207493
View directory record Official record
Conditions
Chlamydia Infection, Contact Tracing
Interventions
Kit enhancement to referral, patient referral versus contract referral
Behavioral · Procedure
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
15 Years and older
Enrollment
494 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 26, 2012 · Synced Jul 22, 2026, 11:02 AM EDT
Terminated No phase listed Observational

Multi-center Evaluation of the VERSANT® CT/GC DNA 1.0 Assay (kPCR)in Detecting C. Trachomatis and N. Gonorrhoeae

NCT01167777
View directory record Official record
Conditions
Chlamydia, Gonorrhea
Interventions
Not listed
Lead sponsor
Siemens Healthcare Diagnostics Inc
Industry
Eligibility
18 Years to 99 Years
Enrollment
2,296 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
7
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2015 · Synced Jul 22, 2026, 11:02 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Integrated Care Versus Usual Care for Opioid Use Disorder and Infectious Diseases in Veterans

NCT06766331
View directory record Official record
Conditions
Opioid Use Disorder, HIV, Hepatitis C Virus, Gonorrhea, Chlamydia, Syphilis, Sexually Transmitted Infection, Integrated Care, Medications for Opioid Use Disorder
Interventions
Integrated care
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2028 – 2029
U.S. locations
1
States / cities
Northport, New York
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Jul 22, 2026, 11:02 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Clinical Study of a Single-Use, Point-of-Care Molecular Diagnostic Device for the Detection of Neisseria Gonorrhoeae (NG), Trichomonas Vaginalis (TV), and Chlamydia Trachomatis (CT) Utilizing Vaginal Swabs

NCT03596151
View directory record Official record
Conditions
Chlamydial Infection, Gonorrhoea, Trichomoniasis
Interventions
Click Device
Device
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
14 Years to 99 Years · Female only
Enrollment
295 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
8
States / cities
Los Angeles, California • San Diego, California • San Francisco, California + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2021 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Mortality Reduction After Oral Azithromycin: Morbidity Study

NCT02048007
View directory record Official record
Conditions
Childhood Mortality
Interventions
Azithromycin, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
1 Month and older
Enrollment
72,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
2
States / cities
San Francisco, California • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 16, 2021 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational

Sexually Transmitted Infections Among African American Women Who Have Sex With Women

NCT01043081
View directory record Official record
Conditions
Sexually Transmitted Infections, HIV Infections
Interventions
Not listed
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated May 10, 2016 · Synced Jul 22, 2026, 11:02 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 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Results available

Computer-Assisted Self-Interviews and Health Screening in the Pediatric Emergency Department

NCT01708317
View directory record Official record
Conditions
Gonorrhea, Chlamydia
Interventions
ACASI
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
15 Years to 21 Years
Enrollment
801 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 7, 2013 · Synced Jul 22, 2026, 11:02 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Project AWARE: Using the Emergency Department (ED) to Prevent Sexually Transmitted Infections (STIs) in Youth

NCT01195220
View directory record Official record
Conditions
Chlamydia, Gonorrhea, HIV
Interventions
HIV testing, STI/HIV-T, STI/HIV-Plus
Behavioral
Lead sponsor
North Bronx Healthcare Network
Other
Eligibility
14 Years to 21 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 7, 2015 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Clinical Evaluation of the APTIMA® COMBO 2® Assay Using the PANTHER™ System

NCT01733069
View directory record Official record
Conditions
Chlamydia Trachomatis, Neisseria Gonorrhoeae Infection
Interventions
APTIMA COMBO 2 Assay (AC2 Assay)
Device
Lead sponsor
Gen-Probe, Incorporated
Industry
Eligibility
14 Years and older
Enrollment
1,912 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
7
States / cities
Indianapolis, Indiana • New Orleans, Louisiana • Fall River, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Jan 13, 2014 · Synced Jul 22, 2026, 11:02 AM EDT
Active, not recruiting Not applicable Interventional

Comparison of Nasopharyngeal Swab v. Nasopharyngeal Saline Wash or Saliva Collection in Testing for Respiratory Viruses

NCT05864118
View directory record Official record
Conditions
Respiratory Tract Infections
Interventions
Respiratory pathogen panel PCR test, COVID-19 antibody test
Diagnostic Test
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional

Randomized Trial of Home Versus Clinic-based Screening for Sexually Transmitted Infections

NCT01184157
View directory record Official record
Conditions
Chlamydia, Gonorrhea
Interventions
Home screening, Clinic screening
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
14 Years to 45 Years · Female only
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 17, 2010 · Synced Jul 22, 2026, 11:02 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Clinical Evaluation of the Aptima® Combo 2® Assay Using the Panther® System in Female Urine Samples

NCT02795975
View directory record Official record
Conditions
Chlamydia Trachomatis, Gonorrhea
Interventions
Not listed
Lead sponsor
Hologic, Inc.
Industry
Eligibility
14 Years and older · Female only
Enrollment
1,766 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
18
States / cities
Birmingham, Alabama • New Haven, Connecticut • Miami, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2017 · Synced Jul 22, 2026, 11:02 AM EDT